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2010 Mack TerraPro Series, LEU Series: Pre-Trip Inspection and Daily Maintenance

Use this checklist for the pre-trip inspection and daily maintenance of your Mack truck. Performing regular maintenance on your equipment has been proven to reduce repair costs for trucks and to avoid unnecessary damages.

MaintainX

12/28/2022

2010 Mack TerraPro Series, LEU Series: Pre-Trip Inspection and Daily Maintenance

Pre-Trip Inspection Quick List

Inspect the vehicle in a circular manner.

Approaching the Vehicle

Check under the vehicle for oil, fuel, coolant leaks or other signs of damage.

Check body surfaces for signs of breaks or damage.

Preparation

Open drain cocks on air tanks to let the tanks drain.

Chock wheels on vehicle and, if hooked up, trailer.

Close air tank drain cocks.

Start the engine and let the air pressure build up to normal. Stop engine check for air leaks.

Switch on parking lights and hazard lights.

Apply parking brakes. Listen for air leaks

Raise cab so belts can be checked

Step 1: Left Side of the Cab

Left Front Wheel

Check condition of wheel rim. Especially look for cracks, missing lockrings, bent or broken studs, missing clamps or lug nuts.

Check condition of tire: properly inflated, no serious cuts, bulges, tread wear or any signs of misalignment; valve stem not touching wheel, rim or brake drum; valve cap in place.

Check wheel bearing and hub: no obvious leaking on outside or inside wheel. Verify correct oil level in hub.

Left Front Suspension

Check condition of spring, spring hangers, shackles, U-bolts: no cracks, breaks or shifting.

Check shock absorber condition.

Left Front Brake

Condition of brake drum. With brakes released, look for a noticeable gap between lining and drum. (This check cannot be made if dust covers are in place.)

Condition of brake air hose.

Check brake chamber mounting bolts and bracket.

Check slack adjuster and chamber pushrod travel for proper brake adjustment.

Condition of Front Axle and Steering System, Left Side

No loose, worn, bent, damaged or missing parts.

Engine Compartment, Left Side

Check coolant hose condition.

Check condition of fan drive belts.

Check engine and surrounding areas for coolant, oil and fuel leaks.

Check wiring harnesses for signs of damage.

Engine Compartment, Right Side

Check condition of coolant and heater hoses.

Check condition of fan drive belts.

Check engine and surrounding areas for coolant, oil and fuel leaks.

Check fuel separator sight glass and drain if necessary. Check for leaks.

Check wiring harnesses for signs of damage.

Check air filter with brackets and hoses for loose connections or damage. Check filter gauge, if mounted on the filter.

Step 2: Front of Cab Area

Condition of Windshield

Check for damage and clean if dirty.

Check windshield wiper arms for proper spring tension.

Check wiper blades for any damage, "dead" rubber and attachment to arm.

Lights and Reflectors

Lower cab and inspect parking, clearance and identification lights on cab. They should be clean, operating and of the proper color.

Reflectors clean and proper color.

Turn on headlights. High and low beams should be operating and lenses clean. If equipped, check daytime running lights.

Left and right front turn signal lights clean, operating and proper color.

Grille

Check that charge air cooler and radiator or bugscreens are clean and undamaged.

Step 3: Right Side of Cab Area

Right Front Wheel

Check condition of wheel rim. Especially look for cracks, missing lockrings, bent or broken studs, missing clamps or lug nuts.

Check condition of tire: properly inflated, no serious cuts, bulges, tread wear or any signs of misalignment; valve stem not touching wheel, rim or brake drum; valve cap in place.

Check wheel bearing and hub: no obvious leaking on outside or inside wheel. Verify correct oil level in hub.

Right Front Suspension

Check condition of spring, spring hangers, shackles, U-bolts: no cracks, breaks or shifting.

Shock absorber condition.

Right Front Brake

Condition of brake drum. With brakes released, look for a noticeable gap between lining and drum. (This check cannot be made if dust covers are in place.)

Condition of brake air hose: check for any chafing.

Check brake chamber mounting bolts and bracket.

Check slack adjuster and chamber pushrod travel. With brakes applied or released, look for conspicuously different positions of the slack adjusters for proper brake adjustment..

Condition of Front Axle and Steering System, Right Side

No loose, worn, bent, damaged or missing parts.

Step 4: Right Saddle Tank Area

Right Fuel Tank(s)

Securely mounted Diesel and Diesel Exhaust Fluid are not damaged or leaking.

Fuel lines secure and not leaking. Check that shut-off valves are open.

Tank(s) full of fuel. Cap on and secure.

Condition of Visible Components

Rear of engine: not leaking.

Transmission: not leaking. If equipped with oil cooler, check cooler, hoses and fittings for leaks.

Check drive shaft.

Exhaust system: secure, not leaking, not touching wires, fuel or air tubing.

Frame and cross members: no bends, cracks or breaks. DPF/SCR check hoses and fittings for leaks.

Air tubing and electrical wiring: secured against snagging and chafing.

Step 5: Right Rear Vehicle Area

Dual Wheels, One or Two Axles

Check condition of wheels and rims. Especially look for cracks, missing lockrings, bent or broken spacers, studs, missing clamps or lug nuts.

Check condition of tires: properly inflated, no serious cuts, bulges, tread wear or any signs of misalignment; valve stems not touching wheels, rims or brake drums; valve caps in place and no objects stuck between the wheels.

Check that both tires are of same type, for example, not mixed radial and bias type and that their circumferences are matched.

Check wheel bearing and hub: no obvious leaking on outside or inside wheel.

Suspension

Check condition of springs (leaf), spring hangers, shackles and U-bolts.

Axle alignment.

Brakes

Condition of brake drums. With brakes released, look for a noticeable gap between lining and drum. (This check cannot be made if dust covers are in place.)

Condition of brake hoses: check for any chafing.

Check brake chamber mounting bolts and brackets.

Check slack adjusters and chamber push rod travel. With brakes applied or released, look for conspicuously different positions of the slack adjusters for proper adjustment.

Check spring brakes.

Step 6: Rear of Vehicle Area

Frame Area

Frame or cross members not bent, cracked or otherwise damaged or missing.

Check that air tubing and electrical lines are properly secured to the frame with no damage or chafing.

Lights and Reflectors

Tail lights, brake lights and turn signal lights: operating, clean and proper color.

Step 7: Coupling System Area

Fifth Wheel

Securely mounted to the frame.

No missing or damaged parts.

Check that trunnion and plate are properly lubricated.

Sliding Fifth Wheel

Mechanism not worn, bent, damaged or parts missing.

Properly lubricated.

All locking pins present and locked in place.

If air operated: no air leaks.

Air Tubing and Electric Lines Visible From This Point

Should be secure from dangling.

Both air lines and electric line should be free from damage, oil and grease.

Step 8: Left Saddle Tank and Left Rear Vehicle Wheels Area

Dual Wheels, One or Two Axles

Check condition of wheels and rims. Especially look for cracks, missing lockrings, bent or broken spacers, studs, missing clamps or lug nuts.

Check condition of tires: properly inflated, no serious cuts, bulges, tread wear or any signs of misalignment; valve stems not touching wheels, rims or brake drums; valve caps in place and no objects stuck between the wheels.

Check that both tires are of same type, for example, not mixed radial and bias type and that their circumferences are matched.

Check wheel bearing and hub: no obvious leaking on outside or inside wheel.

Suspension

Check condition of springs (leaf or air), spring hangers, shackles and U-bolts, no cracks, breaks or shifting.

Brakes

Condition of brake drums. With brakes released, look for a noticeable gap between lining and drum. (This check cannot be made if dust covers are in place.)

Condition of brake hoses: check for any chafing.

Check brake chamber mounting bolts and brackets.

Check slack adjusters and chamber push rod travel. With brakes applied or released, look for conspicuously different positions of the slack adjusters for proper brake adjustment.

Check spring brakes.

Condition of Visible Components

Transmission: not leaking.

Drive shaft: looks OK.

Exhaust system: secure, not leaking, not touching wires, fuel or air tubing.

Frame and cross members: no bends, cracks or breaks.

Air tubing and electrical wiring: secured against snagging and chafing.

Left Fuel Tank(s)

Securely mounted and not damaged or leaking.

Fuel lines secure and not leaking. Check that shut-off valves are open.

Tank(s) full of fuel. Cap on and secure.

Battery Area

Open the battery box. Battery box securely mounted to vehicle.

Batteries secured against movement.

Battery cases not broken or leaking. Battery cables free from damage.

Tops of batteries and terminals clean and free from foreign material.

If equipped, replace battery lid and make sure it is securely fastened.

In the Cab

Check steps and grab handles for looseness or breakage. Also, clean them if there is any substance that makes them slippery, which makes cab entry/exit hazardous.

Start the engine. If equipped, check that exhaust rain cap opens when accelerating engine.

Check gauges and tell-tale light function. See the Instruments and Controls section.

Check function of low air warning.

Check clutch function. If equipped, check for clutch brake function.

Check windshield wipers and washers and horns, including back-up alarm, if equipped.

Clean inside windshield, door windows and instruments. Clean mirrors.

Check temperature control and defroster. If equipped, check mirror heater.

Check condition of warning triangles, fire extinguisher and flares.

Adjust the seat. Check mirror adjustment.

Check safety belts for function and damage.

Apply service brakes. After initial drop, pressure should hold steady, or increase slightly, with engine at idle.

Check steering wheel for excessive free play.

Check for loose items in the cab. Secure them if necessary.

Hooking Up To Trailer

Hook-Up Preparation

Check kingpin and mounting plate on trailer, free from wear, bends or damage.

Chock trailer wheels.

Fifth Wheel or Trailer Hitch

No visible space between fifth wheel and trailer.

Locking jaws around the shank and not the head of kingpin.

Release lever properly seated and safety latch/lock engaged.

Check all connections to dolly or trailer hitch and safety chains are secured.

Check function of trailer air supply valve and trailer brakes.

Sliding Fifth Wheel

Check that fifth wheel is not so far forward that the tractor frame will strike the landing gear during turns.

Note: Refer to the trailer manufacturer’s manual for specific information on the trailer checks.

Step 9: Trailer Front Area

Air and Electrical Connections

Glad hands properly mounted, free from damage and not leaking.

Trailer cord receptacle properly mounted, free of damage; plug properly seated and safety catch engaged to prevent accidental disconnect.

Air and electrical lines properly secured against tangling, snagging and chafing with sufficient slack for turns.

Step 10: Right Side of Trailer Area

Landing Gear or Dolly Area

Fully raised; no missing or damaged parts.

Crank handle present and secured.

If power operated, no air/hydraulic leaks.

Spare Wheel(s)

Carrier or rack not damaged.

Spare wheel securely mounted in rack.

Tire and wheel condition adequate for a spare: proper size, properly inflated.

Lights and Reflectors

Trailer side clearance lights: clean, operating and proper color.

Reflectors clean and proper color.

Frame and Body

Frame and crossmembers not bent, cracked, damaged or missing.

Proper placarding.

Body parts not damaged or missing.

Step 11: Right Rear Trailer Wheel

Dual Wheels, One or Two Axles

Check condition of wheels and rims. Especially look for cracks, missing lockrings, bent or broken spacers, studs, missing clamps or lug nuts.

Check condition of tires: properly inflated, no serious cuts, bulges, tread wear or any signs of misalignment; valve stems not touching wheels, rims or brake drums; valve caps in place and no objects stuck between the wheels.

Check that both tires are of same type, for example, not mixed radial and bias type and that their circumferences are matched.

Check wheel bearing and hub: no obvious leaking on outside or inside wheel.

Suspension

Condition of springs (leaf or air), spring hangers, shackles and U-bolts.

Axle alignment.

Condition of torque rod arms.

If equipped with sliding axles, check position and alignment. Look for damaged, worn or missing parts, all locks present, fully in place and locked.

Flexible air tubing not cracked, cut, crimped or otherwise damaged. Secured against tangling, dragging and chafing.

Brakes

Condition of brake drums. With brakes released, look for a noticeable gap between lining and drum. (This check cannot be made if dust covers are in place.)

Condition of brake hoses: check for any chafing.

Check brake chamber mounting bolts and brackets.

Check slack adjusters and chamber push rod travel. With brakes applied or released, look for conspicuously different positions of the slack adjusters for proper brake adjustment..

Check spring brakes.

Step 12: Rear of Trailer Area

Lights and Reflectors

Rear clearance, identification and tail lights clean, operating and proper color.

Reflectors clean and proper color.

Cargo Securement

Cargo properly blocked, braced, tied, chained, etc.

Tailboard up and properly secured. End gates free from damage, properly secured in stake pockets.

Canvas or tarp (if required) properly latched down to prevent water damage, tearing, billowing or blockage of either mirrors or tail lights.

Rear doors securely closed, latched or locked; required security seals in place.

Underside guard in place: not cracked, bent or broken.

Step 13: Left Rear Trailer Wheels Area

Dual Wheels, One or Two Axles

Check condition of wheels and rims. Especially look for cracks, lockrings missing, bent or broken spacers, studs, missing clamps or lug nuts.

Check condition of tires: properly inflated, no serious cuts, bulges, tread wear or any signs of misalignment; valve stems not touching wheels, rims or brake drums; valve caps in place and no objects stuck between the wheels.

Check that both tires are of same type, for example, not mixed radial and bias type and that their circumferences are matched.

Check wheel bearing and hub: no obvious leaking on outside or inside wheel.

Suspension

Condition of springs (leaf or air), spring hangers, shackles and U-bolts.

Axle alignment.

Condition of torque rod arms.

If equipped with sliding axles, check position and alignment. Look for damaged, worn or missing parts, all locks present, fully in place and locked.

Flexible air tubing not cracked, cut, crimped or otherwise damaged. It should be secured against tangling, dragging and chafing.

Brakes

Condition of brake drums. With brakes released, look for a noticeable gap between lining and drum. (This check can not be made if dust covers are in place.)

Condition of brake hoses: check for any chafing.

Check brake chamber mounting bolts and brackets.

Check slack adjusters and chamber push rod travel. With brakes applied or released, look for conspicuously different positions of the slack adjusters.

Check spring brakes.

Step 14: Left Side of Trailer Area

Landing Gear or Dolly Area

Fully raised; no missing or damaged parts.

Crank handle present and secured.

If power operated, no air/hydraulic leaks.

Spare Wheel(s)

Spare wheel securely mounted in rack with no damage to rack.

Tire and wheel condition adequate for a spare: proper size, properly inflated.

Lights and Reflectors

Trailer side clearance lights: clean, operating and proper color.

Reflectors clean and proper color.

Frame and Body

Frame and crossmembers not bent, cracked, damaged or missing.

Proper placarding.

Body parts not damaged or missing.

Before Leaving the Parking Area

Remove chocks from the wheels.

Test trailer hook-up by slowly pulling while applying the trailer brakes with the trailer brake hand control valve.

Test the service brakes before leaving the parking area.

Test parking brakes by stopping on a 20% grade and applying the parking brakes. The parking brakes shall hold the combined vehicle and trailer without moving.

Source: MaintainX (Community Member)

Please note that any procedure, checklist, or other document available in the MaintainX Procedure Hub is provided for general education and information only and does not constitute legal, medical, or financial advice. MaintainX makes the materials available AS IS and AS PROVIDED, without warranties of any kind. By downloading or using any such materials, you assume the risk that they may not be appropriate for your specific situation and agree that you are solely responsible for any such use, including compliance with applicable law and with meeting any conditions of product warranties.

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