Mack | 2009 Mack Granite Series (GU) - Pre-Trip Inspection and Daily Maintenance
Use this checklist for the maintenance of your Mack truck. Maintenance checklists have proven to reduce repair costs for trucks and to avoid unnecessary damages.
MaintainX
12/28/2022
Mack | 2009 Mack Granite Series (GU) - Pre-Trip Inspection and Daily Maintenance
Use this checklist for the maintenance of your Mack truck. Maintenance checklists have proven to reduce repair costs for trucks and to avoid unnecessary damages.
Warning: Before working on or inspecting a vehicle, set the parking brakes, place the transmission in neutral and block the wheels. Failure to do so can result in unexpected vehicle movement and can cause serious personal injury or death.
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
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, clamps or lugs.
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.
Condition of Front Axle and Steering System, Left Side
No loose, worn, bent, damaged or missing parts.
Under Hood, 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.
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 hood and inspect parking, clearance and identification lights on hood and 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. Raise hood.
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, clamps or lugs.
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.
Condition of Front Axle and Steering System, Right Side
No loose, worn, bent, damaged or missing parts.
Under Hood, 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 4: Right Saddle Tank Area
Right 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.
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.
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, clamps or lugs.
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.
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.
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, clamps or lugs.
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.
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.
ir tubing and electrical wiring:
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.
Source: MaintainX (Community Member)