Ground Support Equipment Glossary

A hydraulic device that stores energy in pressurized fluid to maintain system pressure.

Essential for smooth hydraulic operation and consistent performance in lifting or steering systems.

A component used to connect two incompatible parts or systems.

Adapters ensure proper fit and function between different GSE components, reducing downtime.

Replacement parts not manufactured by the original equipment manufacturer (OEM). 

They can offer cost savings but must meet quality standards to maintain safety and performance.

Choosing quality aftermarket parts ensures reliability and longevity for GSE.

A component that removes dust and contaminants from the engine’s air intake system.

Proper filtration is essential in dusty ramp and industrial environments to maintain engine efficiency and prevent accelerated wear.  

A device used to adjust wheels or components to the correct angle or position.

Proper alignment prevents uneven wear, improves handling, and reduces strain on GSE components.

 A belt that drives the alternator from the engine crankshaft. 

Proper belt tension ensures consistent charging and prevents electrical system failures.

Regulations governing equipment safety. Compliance protects personnel and ensures legal adherence in industrial and ramp environments.

A sensor that monitors wheel speed for anti-lock braking.   

Critical for maintaining control during braking on slick or uneven surfaces.

A unit that provides electric and pneumatic power to aircraft on the ground.  

APUs support ramp operations and reduce engine idling, saving fuel and reducing emissions.

A shaft that supports wheels or gears and allows them to rotate under load.

 In GSE, axles must withstand heavy towing forces and frequent directional changes.  

A shaft that delivers torque from the differential to the wheels.  

Properly maintained axle shafts prevent drivetrain failure and ensure smooth power delivery.

 An audible warning system activated when a vehicle reverses. 

Backup alarms protect personnel and equipment by alerting nearby workers in busy ramp or warehouse areas.

A bearing that reduces friction using spherical balls.

Proper lubrication and inspection prevent wear and failure, which could otherwise impair vehicle operation.

A pivoting joint that allows steering knuckles or control arms to move smoothly.

Failure causes poor steering response and uneven tire wear, making it a key safety component.

A conveyor vehicle used for loading baggage.

Belt loaders streamline airport operations and reduce manual handling injuries.

A list of all components in an assembly.  

A complete BOM ensures correct part procurement and accurate maintenance planning.

A fan that moves air through HVAC ducts.  

Ensures cabin or equipment ventilation, improving operator comfort and system efficiency.

A threaded fastener used with a nut to clamp parts together.   

Correct installation and torque are critical to maintain structural integrity and prevent mechanical failures.

An extendable arm used for lifting, positioning, or reaching.   

Though not specific to Harlan equipment, understanding boom function helps users in related industrial contexts.

Structural components that provide support, alignment, and durability in machinery assemblies.   

Properly installed brackets reduce frame stress and prevent component failure.

  A hydraulic component that squeezes brake pads against a rotor to stop the vehicle.

 Reliable caliper operation is essential for stopping heavy GSE loads safely on the ramp.  Regular inspection is necessary to ensure safe braking performance.

A cylindrical brake component attached to a wheel hub that uses brake shoes to create friction and slow the vehicle. 

Common on older or heavy-duty GSE, drums must be inspected regularly for heat cracks.  

Worn drums reduce braking efficiency and can increase stopping distances.

 A tube or hose that carries hydraulic fluid from the master cylinder to the wheel brakes.

Any leak or blockage reduces braking force, making line condition critical for safety.

Friction components that press against a rotor or drum to slow or stop the vehicle.

Monitoring wear and replacement intervals is vital for safety and performance

 Because pads and shoes wear down over time, they are one of the most frequently replaced service items in GSE fleets.    

A resettable switch that protects a circuit from overcurrent.

Essential for preventing electrical damage and fires in GSE equipment.

A sleeve that reduces friction and wear between moving parts.

Bushings extend component life and maintain smooth operation.

The operator compartment of a vehicle or machine. A well-designed cab improves visibility, comfort, and operational safety.

A device that mixes fuel and air in older engines.   

Proper carburetor operation ensures efficient engine performance and fuel economy.

A support bearing for a drive shaft.   

Proper lubrication and inspection prevent wear and failure, which could otherwise impair vehicle operation.

Allows fluid or air to flow in only one direction.   

Prevents backflow that could damage components or reduce system efficiency.

A wedge placed against wheels to prevent vehicle movement.

Proper chocking is essential during loading, maintenance, or parking on inclines to prevent accidents.

A pin that allows pivoting movement in linkage assemblies.   

Correct installation prevents accidental detachment and ensures operational safety.

A mechanical device that engages or disengages power transmission between the engine and drivetrain.

Correct operation allows smooth power delivery and prevents drivetrain damage.

The friction plate that connects/disconnects engine power to a transmission.

A set of plates in a transmission that engage or disengage power flow.  

A helical spring that supports vehicle weight.  Maintains ride height, handling, and load stability.

A heat exchanger used in A/C systems to cool refrigerant.

A flexible joint that maintains constant rotational speed.  Ensures smooth power transfer to wheels at varying angles, reducing wear.

A switch that activates when physically pressed.  

A suspension component that connects the wheel hub to the chassis, allowing controlled motion.  

In hydraulic systems, controls flow to cylinders. Regulates movement, speed, and safety of lifting or steering functions.

A communication network that allows vehicle modules to exchange data.

Critical for modern GSE electronics, diagnostics, and safety systems.

A sensor that monitors engine temperature for ECU adjustment. 

Accurate readings prevent overheating and maintain efficient engine operation.

Radiator, coolant passages, hoses, and fans that remove heat from an engine.

Effective cooling is vital because GSE often idles for long periods on the ramp, increasing the risk of overheating.

A structural beam running across the frame to increase rigidity. 

Strong crossmembers prevent chassis flex, improving durability and load-carrying capability.

A split pin used to lock a castle nut or clevis pin in place.

Correct installation and torque are critical to maintain structural integrity and prevent mechanical failures.

A device used to connect two shafts for power transmission.

Reduces vibration and maintains alignment between components.

A flat metal surface used as a platform for machinery or cargo.  

Removing ice and snow from aircraft surfaces.

Prevents damage, maintains safety, and ensures on-time departures.

Engineering practice of designing parts to be easier, more cost-effective, and more reliable to manufacture.

 Applied well, DFM reduces long-term part cost and improves serviceability for technicians.

A flexible membrane used to regulate fluid or air flow in hydraulic or pneumatic systems.

A gear system that allows wheels to rotate at different speeds while receiving power from the engine.   

Proper differential function ensures traction, vehicle control, and tire longevity.

A component that allows electrical current to flow in only one direction.  

A steering linkage rod that transfers steering motion between components.  

The amount of pulling force a tug can produce.

Determines towing capability and ensures safe ramp operations.

A metal piece that locks rotating parts together on a shaft.  

A rotating shaft that transmits torque from the engine to the wheels or axle.

A valve that releases excess pressure from a hydraulic system.

The percentage of time equipment can safely operate under load without overheating.   

Observing duty cycle limits ensures reliability and prevents system damage.

A component that secures the engine to the chassis while absorbing vibration and torque. 

Proper mounting reduces noise, protects components, and improves operator comfort.

A bundled set of wires that transmit electricity and signals to components in a vehicle or machine. 

Inspecting and securing wiring prevents shorts, failure, and fire hazards.

 Battery, alternator, wiring, and relays that provide electrical power, control, and communication throughout a vehicle.

 In GSE, electrical reliability is crucial for cold starts, lighting, diagnostics, and safety systems.

A charcoal-filled canister that stores fuel vapors until they can be burned. 

Proper EVAP function prevents emissions leaks and maintains fuel efficiency.  

The A/C component that absorbs heat and cools incoming air.  

A system that directs engine gases away from the vehicle and reduces emissions.  

A mechanical arm used to extend reach for lifting or moving equipment parts. Improves operational flexibility and load handling.

A bolt with a looped head used for lifting or securing components.  Ensures safe attachment points for hoisting operations.

A shaped cover that protects internal components and streamlines airflow.

Safety systems preventing falls when servicing equipment.

Essential for compliance and personnel safety in elevated or hazardous areas.

  A temperature-controlled device that engages or disengages the engine cooling fan.

 A failing fan clutch can cause overheating during towing or long idle cycles.

A panel that protects against mud, debris, or other hazards. Maintains equipment cleanliness and prevents component damage.

The housing that holds a hydraulic filter.   

Critical for proper filtration and maintaining hydraulic system pressure.

A valve that adjusts the speed of hydraulic actuators.

Enables precise control of lifting, steering, and other hydraulic functions.

A heavy wheel that stabilizes engine rotation and stores rotational energy.   

Smooths power delivery and prevents engine stalling under load.

Loose material on the ramp or warehouse floor that can damage equipment or aircraft.   

Controlling FOD prevents accidents, equipment damage, and operational delays.

The arms on a forklift used to carry loads

A tool or accessory added to a forklift to perform specialized lifting tasks.  

The structural skeleton of a vehicle or piece of equipment that supports components and load. 

Maintaining frame integrity ensures durability, safety, and load handling.

The main longitudinal structural beams of a chassis.

Removes contaminants from fuel before it reaches the engine.  

Clean fuel prevents clogging, poor performance, and engine damage.

A device that sprays precise amounts of fuel into the engine.

Accurate fuel delivery ensures efficiency and prevents engine issues.

Delivers fuel from the tank to the engine at the correct pressure.   

Proper function ensures reliable engine performance and prevents stalling or loss of power.

A distribution pipe that delivers fuel to injectors. 

Maintaining a clean, leak-free fuel rail ensures consistent engine operation.

A valve that allows air to enter or leave the fuel tank as fuel levels change. 

Proper venting prevents pressure build-up, fuel starvation, and system damage.

  An electrical safety device that interrupts electrical flow if current exceeds safe levels .

 Proper fuse rating prevents fires and protects sensitive electronics on GSE.

A material layer that seals joints between flat surfaces.

Prevents fluid or air leaks and maintains system efficiency.

A system of gears that changes engine speed and torque to drive the wheels effectively.  

A heating element for diesel engines that warms the combustion chamber for cold starts. 

Functioning glow plugs improve starting reliability in low temperatures.  

A small fitting used to lubricate a moving part with grease.

Ensures proper lubrication and reduces wear in high-friction components.

Tools and support devices used directly on the ramp.  

Includes tugs, belt loaders, and other ramp support machinery.

A unit that supplies electrical power to aircraft on the ramp.  

Reduces aircraft engine idling, saving fuel and lowering emissions.

A conductive cable connecting vehicle components and electrical grounding.

Prevents electric short-circuiting and equipment damage.

 Vehicles and machinery that support aircraft operations on the ground, as well as heavy-duty towing, lifting, or moving loads in industrial/operational settings.

 Examples include tugs, belt loaders, and GPUs, all of which rely on high-duty reliability under continuous operation.

A protective shield for sensitive parts against debris or impact.

A roller that guides movement of belts, chains, or mechanical assemblies.

A reinforcement plate used to strengthen frames, brackets, or weldments.  

A crankshaft-mounted weight that dampens engine vibration. 

Proper damping prevents crankshaft wear and ensures smooth engine performance.  

A protective barrier that prevents heat from damaging nearby components. 

Heat shields maintain safe operating temperatures and protect wiring and hoses.

 A towing connection point that attaches a trailer, equipment, or other attachments to a vehicle.

 Correct hitch rating ensures safe towing capacity for high-torque aircraft tugs.

The unit that houses wheel bearings and mounts the wheel, supporting and allowing rotation with minimal friction. 

Maintaining bearings prevents wheel failure and unsafe driving conditions. ​

A cover that protects the wheel hub and bearings from dirt and moisture.  

A seal that prevents grease or oil from leaking at the hub.  

Controls the direction, pressure, or flow of hydraulic fluid.

Proper valve operation ensures safe and precise equipment movement.  

The process of removing trapped air from a hydraulic system so it operates at full pressure and responsiveness.  

A device that converts hydraulic pressure into linear motion.

 Cylinders operate steering, lifting, and braking systems on most GSE, making seal condition and fluid quality critical.  

Device that removes contaminants from hydraulic fluid to protect system components. 

Clean fluid prevents system wear and maintains proper pressure for cylinders and motors.

A connector used to join hydraulic hoses and components.   

Proper installation and inspection prevent leaks, which could disable lifting or steering systems.

 A reinforced hose that carries hydraulic fluid under pressure.

 Hose wear or leaks can disable critical systems like steering or lifting.

A device used to lift heavy machinery using hydraulic force.  

 A device that pressurizes hydraulic fluid, converting mechanical energy into hydraulic energy to power cylinders, motors, and valves.

 Pump performance directly affects steering, lifting, and brake effectiveness.

Controls the direction, pressure, or flow of hydraulic fluid.

Proper valve operation ensures safe and precise equipment movement.  

A valve that regulates airflow during idle. A clean, functional IAC prevents stalling and keeps the engine running smoothly at low speeds. 

A steering component that supports and guides linkage movement. Maintains alignment and smooth steering response.

A pulley used to guide or tension a belt in a drive system.  

Converts low battery voltage into high voltage for spark plugs.   

Proper function is crucial for engine starting and reliable performance.

A switch that activates the engine starter and electrical systems.  Essential for safe engine operation and system control.

A dial or display that shows pressure, temperature, or other measurements. Allows operators to monitor system health and performance.

A component that prevents the passage of electricity or heat.  Protects components and ensures safety.

A shaft that transmits rotational motion between components in a drivetrain.

A device that converts DC to AC electrical power.  Used to operate AC equipment from a DC source, often in ground support machinery.

A mechanical device that connects two shafts while dampening vibration.

Prevents misalignment and reduces stress on connected components.

A movable walkway connecting the terminal to the aircraft door, allowing passengers to board aircraft safely.  Essential for smooth airport operations.

A suspension component that limits compression travel and absorbs impact. Protects suspension components and improves ride safety.

A lever used to operate machinery functions with directional control.  Provides precise operator input for lifts, tugs, or other GSE.

A protective plate to prevent damage to operator feet or controls. Enhances safety and preserves equipment longevity.

A system that recovers energy from braking and stores it for reuse. Improves efficiency and reduces fuel consumption.

The pivot point that connects a steering knuckle to the axle in heavy machinery. Critical for safe steering and load handling.  

A vehicle used to service aircraft lavatory systems.  

Time required to produce or deliver parts. Understanding lead times helps plan maintenance and prevent downtime.

A stack of curved steel strips that support weight and absorb shocks. Common in heavy-duty vehicles for durability and load support.

A mechanical arm used to raise or lower equipment attachments or cargo. Critical for efficient material handling and lifting safety.

Work lights, safety lights, and indicator lamps that provide visibility and signaling during operation.   

Effective lighting prevents accidents and supports safe operation in low-light or complex environments.

A series of mechanical connections transmitting motion between components.

The maximum safe weight capacity a structure, component, or attachment can safely support during operation.

 Exceeding load rating is a major cause of failures in towbars, lifts, and axles.

Detects and measures weight or force applied to equipment. Supports safe operation by preventing overloads.

A procedure verifying lifting or towing capacity.   

Regular testing confirms equipment can safely handle expected loads and prevents accidents.

A washer designed to resist loosening from vibration.

A nut designed to resist loosening under vibration.  

A pin that secures components in a fixed position.

 A safety procedure that ensures equipment is fully powered down and prevented from accidental startup during maintenance.

Following this protocol reduces injury risk and ensures compliance with safety regulations.

A specific location on equipment where grease or oil must be applied to ensure smooth operation and reduced wear.  

Supplies oil or grease to moving parts to reduce friction and wear.

Regular lubrication reduces friction, prevents premature wear, and extends equipment life.

A device that generates electricity for engine ignition. Ensures reliable spark generation in engines, especially in older or heavy-duty machinery.

A channel that distributes air to the engine or directs exhaust away.   

Proper manifold function affects engine efficiency and emissions.

A sensor that measures intake manifold pressure for fuel and ignition adjustment. 

Accurate readings improve engine efficiency and power output.  

Hand signals used to guide aircraft on the apron.  Critical for safe aircraft movement and ground crew coordination.

The vertical lifting frame on forklifts or loaders. Supports lifting mechanisms and ensures stability under load.   

A sensor measuring incoming air volume for ECU control. Clean MAF sensors ensure proper fuel mixture and reduce emissions.  

A hydraulic pump that generates pressure for braking or steering systems.  Essential for reliable vehicle control and safety.

A device limiting the travel of a moving part. Prevents overextension or damage to mechanical components.

A rubber or composite block that secures equipment while reducing vibration and noise. 

Proper mounting protects both machinery and operators from excessive wear or discomfort.

A structural support used to secure and stabilize parts on machinery or vehicles. 

Ensuring secure brackets prevents misalignment, mechanical failure, and safety hazards.

Reduces noise produced by exhaust gases. Also helps control emissions and maintain compliance with regulations.

A cylindrical bearing that reduces friction between moving parts, often in tight spaces.

Proper lubrication and inspection prevent wear and failure, which could otherwise impair vehicle operation.

Prevents the engine from starting unless the transmission is in neutral or park.

Protects both operator and equipment from accidental movement.

Allows fluid or air to flow in one direction only.  Prevents backflow and maintains system integrity.

Directs fluid or air flow in hydraulic or pneumatic systems. Ensures precise operation of machinery components.

A threaded fastener that screws onto a bolt.   

Correct installation and torque are critical to maintain structural integrity and prevent mechanical failures.

Removes contaminants from engine oil.   

Clean oil reduces engine wear, prevents damage, and extends service life.

A switch that activates a warning light when oil pressure drops. 

Reliable operation alerts operators to low lubrication before engine damage occurs.

Circulates engine or hydraulic oil to lubricate moving parts. Also prevents component overheating.  

Prevents oil leakage in rotating components. Maintains fluid containment and protects equipment from contamination.

The seating area for machinery operators, often with suspension for comfort.

Proper seating reduces fatigue and improves operational safety.

Refers to genuine manufacturer parts. Using OEM parts ensures compatibility, performance, and safety.

A circular gasket used to seal connections between components. Prevents leaks in hydraulic, pneumatic, and fluid systems.

A pivoting arm that moves back and forth in mechanical assemblies. Allows controlled motion and precise operation in equipment.

Prevents damage by limiting maximum force or pressure in a system.

Protects components and ensures operator safety.

The arm that transfers steering box motion into steering linkage motion.

Ensures accurate wheel response and directional control.

A gear assembly providing high torque in compact spaces. Common in transmissions and heavy-duty drives for efficient power distribution.

A vehicle used to fill aircraft freshwater systems.  Ensures safe and clean water supply for aviation operations.

Transfers mechanical power from an engine to auxiliary equipment.  Enables operation of attachments like pumps, winches, or lifts.

The combined engine, transmission, and drivetrain components that generate power and deliver it to the wheels.

Reliable powertrain function is essential for safe, efficient operation under heavy loads.

Releases excess pressure in a hydraulic or pneumatic system.

Maintaining relief valves ensures safe operation and prevents system damage.

A switch that activates when hydraulic pressure reaches a set level.  Critical for system monitoring and automation.   

Scheduled inspections and service tasks performed to avoid unexpected failures and extend equipment life.    

Following preventive maintenance schedules extends equipment life and avoids costly downtime.

A valve that balances braking force between axles. Ensures safe and consistent braking performance.

A wheel with a grooved rim used to guide belts or chains.  

A tug used to push aircraft away from gates.  Designed for precision, safety, and high-duty reliability.

N/A 

A heat exchanger that transfers engine heat to coolant and dissipates it to the air. 

Proper radiator function prevents overheating and maintains consistent engine performance.

A pressure-regulating cap on a cooling system. Maintains system pressure and prevents coolant loss.

A set of parts used to restore a component to working condition. 

Facilitates cost-effective maintenance and prolongs equipment life.

Electrically operated switch used to control circuits.

Relays protect delicate components, ensure proper system operation, and allow high-current devices to be safely managed.

A safety valve that releases pressure when the system exceeds its limit. Prevents hydraulic or pneumatic system damage.  

Holds fluid in hydraulic or braking systems.   

Maintaining fluid level and cleanliness is essential for consistent hydraulic performance.

A hydraulic line that returns low-pressure fluid to the reservoir.

Ensures proper fluid circulation and system efficiency.

Bearing using cylindrical rollers to reduce friction between moving parts.  

Proper lubrication and inspection prevent wear and failure, which could otherwise impair vehicle operation.

Flexible cushion that reduces vibration and wear in mechanical joints.

Extends component life and improves operator comfort.

A locking pin that secures attachments or components to prevent accidental release.   

Using safety pins correctly ensures equipment stability and operator safety.

A lifting mechanism using crossed supports that extend vertically.  

Provides stable vertical access for equipment or personnel.  

Scheduled maintenance period based on hours or miles.  Ensures timely inspection and prolongs equipment life.

A pulley used to guide or change the direction of a cable or belt.  Maintains proper belt alignment and load handling.

Parts of the suspension system that manage ride stability and load distribution.   

Maintaining suspension components improves operator comfort, handling, and load safety.

The bracket that attaches a shock absorber to the frame or suspension.  

Critical for safe and effective suspension operation.

A protective plate that shields components from ground impact. Prevents damage in off-road or rough terrain environments.  

An electromagnetic actuator used to control mechanical movement or circuit operation.   

Functional solenoids ensure reliable starting, valve operation, and safety interlocks.

A valve controlled by an electrical coil. Used for precise hydraulic or pneumatic control.

The rotating axis that supports the wheel and connects it to the suspension system.  Essential for proper wheel alignment and rotation.

Grooves on a shaft that transmit torque to a mating component. Ensures smooth and reliable power transfer.

A valve that directs hydraulic flow by sliding a spool inside a body. Critical for controlling hydraulic actuator movement.

A bar that reduces body roll during turns. Improves stability and load safety.  

The location where ground equipment services an aircraft. Organized stand areas improve efficiency and safety.

An electrical switch that energizes the starter motor. Protects the circuit and ensures reliable engine starting.

A relay that engages the starter motor to crank the engine. Critical for proper engine operation.

A pivot pin used to attach the steering arm to the vehicle linkage. Maintains steering precision and safety.

Connects the steering wheel to the steering mechanism.   

Maintaining a functional column ensures accurate vehicle control and safe maneuvering.

A device used to control the direction of a vehicle or machine. Provides operator input for safe maneuvering.

The pivot point that allows wheels to turn while supporting suspension loads.    

Proper function is critical for steering precision and safety.

Converts rotational motion of the steering wheel into linear motion to turn wheels.  

Wear or damage can lead to poor handling or unsafe operation.

The components that control a vehicle’s direction, typically including the steering rack, tie rods, knuckles, and related linkages. 

Ensures accurate and safe vehicle navigation.

A threaded rod used to mount components where a bolt can’t be inserted. Requires proper torque to maintain secure connections.

The system of control arms, springs, and shock absorbers that supports the vehicle and absorbs road impacts. Maintains load stability, comfort, and handling.

Operating hours measured for maintenance scheduling. Used to track usage and schedule preventative maintenance.

A bearing designed to handle both radial and axial loads. Critical for heavy-duty steering, axle, and transmission applications.  

A path used to move aircraft between runway and gate. Proper marking and clearance prevent ground collisions.

Remote monitoring of equipment health, location, and performance. 

Supports predictive maintenance and fleet efficiency.   

A valve that regulates coolant temperature by opening and closing.  

Maintains optimal engine operating temperature and prevents overheating.

A sensor that detects throttle plate angle. Accurate TPS readings improve acceleration response and fuel control.  

Controls the flow of air or fuel to an engine. Directly affects engine speed, power output, and fuel efficiency.   

Transmits force from the steering rack to the steering arm. Critical for accurate steering response.

The connection point of the tie rod to the steering knuckle. Ensures safe and precise steering control.

The drive mechanism that synchronizes crankshaft and camshaft timing. Critical for engine efficiency and preventing mechanical damage.

The rubber component mounted on a wheel that contacts the ground. Proper inflation and tread maintain safety, traction, and performance.

Allowable variation in part dimensions. Ensures proper fit, function, and safety in mechanical assemblies.

Storage platform for tools and small parts on machinery. Keeps tools organized and accessible, improving maintenance efficiency.

Fluid coupling that transmits engine torque to the transmission in automatic vehicles.

Correct operation allows smooth power delivery and prevents drivetrain damage.

Manufacturer-recommended tightening force for bolts or nuts to ensure proper clamping without damaging components.   

Following torque specs prevents loosening, structural failure, and safety hazards.

 A mechanical link used to connect aircraft or equipment to a tug for towing.

Correct pin fit and proper towbar rating prevent aircraft nose-gear damage — one of the most expensive avoidable mistakes on the ramp.

A reinforced point for attaching chains or towing equipment. Ensures safe towing and load control.

A U-shaped fastener used to clamp pipes, axles, or components to a vehicle frame.

 Ensures secure mounting under vibration and heavy load conditions.  

The lower portion of tracked or heavy-duty vehicles, including tracks, rollers, and supporting frame components.

Critical for stability, wear resistance, and load distribution in harsh operating environments.  

A flexible coupling that transmits torque between shafts at varying angles.

Ensures smooth power transfer in steering and driveline systems, even under articulation.

Connects the wheel hub to the chassis and controls wheel motion for proper alignment and suspension travel.

Worn control arms cause misalignment, uneven tire wear, and unstable handling.

A hook attachment used for lifting, towing, or securing equipment.

Provides a safe connection point for handling loads around ramps or maintenance facilities.  

A hose carrying vacuum pressure between components. 

Maintaining vacuum line integrity ensures proper function of braking boosters, sensors, and emissions systems.

A pump that generates vacuum pressure to operate braking, emission, or control systems.

Essential for consistent brake assist and engine performance.

A belt with a V-shaped cross-section used to drive engine accessories such as alternators, pumps, and fans.

Proper tension ensures reliable power transmission and prevents slippage.  

  A component that allows air or fluid to escape or circulate within a closed system.

 Proper venting prevents pressure buildup and protects seals and components.

Transfers torque through viscous fluid to allow controlled slip between rotating components.

Improves traction and smooth driveline engagement.  

A device that maintains proper charging voltage from the alternator to protect electrical components and ensure stable battery performance.   

Flat disc placed under a nut or bolt to distribute load or prevent leakage.

Proper washer selection and installation maintain joint integrity and prevent loosening under vibration.  

A pump that circulates coolant through the engine to maintain optimal operating temperature.

Essential for preventing overheating and ensuring long-term engine reliability. 

  A filter that removes water from diesel fuel. Removing water prevents injector wear, corrosion, and engine performance issues.

A hydraulic cylinder used in drum brake systems to push brake shoes outward against the drum.

Ensures effective braking performance under load.

The central component of the wheel assembly that houses wheel bearings and connects the wheel to the axle.

Critical for smooth rotation and load support.

 A fixed support used to hold vehicles or equipment elevated during maintenance.

 Provides stable load-bearing support to prevent accidental collapse.

A mechanical device that uses a rope or cable to pull, lift, or secure loads.

Commonly used for aircraft towbar handling, recovery operations, or equipment positioning.  

A mounted light that illuminates work areas around machinery or vehicles.

Improves visibility and safety during nighttime or enclosed-area operations.  

A generic actuator that controls linear movement along the X-axis in automated or mechanical systems.

A frame structure arranged in an X-shape to increase rigidity and distribute loads more evenly across the chassis.

  A sensor that measures rotational movement around a vehicle’s vertical axis to support stability control or steering systems.

A high-visibility yellow marker used to identify hazards, walkways, or vehicle boundaries.

Enhances workplace safety by improving visual awareness.  

A mechanical connector used in driveshafts or steering linkages to transfer rotational force between components.

A suspension link shaped like a “Z” that connects sway bars to the chassis or axle. 

Improves stability by reducing body roll during turning.  

A grease fitting that allows lubricants to be injected into bearings, joints, or pivots.

Ensures proper lubrication to reduce wear and extend component life.  

The process of resetting a sensor or gauge to its baseline reading to ensure accurate measurements and system performance.