Miller Wheel Loader 924HZ

Rollover Protective Structure (ROPS) - Inspect

1. Remove the access covers from both sides of the ROPS.

2. Inspect the ROPS for loose bolts or for damagedbolts. Replace any damaged bolts or missing bolts with original equipment parts only.

Note: Apply oil to all ROPS bolt threads before you install the bolts. Failure to apply oil to the bolt threads can result in improper bolt torque. Tighten the bolts that hold the platform to the frame to a torque of 530 ± 70 N·m (400 ± 50 lb ft). Tighten the bolts that hold the ROPS to the platform to a torque of 460 ± 60 N·m (340 ± 45 lb ft). Once you have torqued all the bolts, torque the bolts again.

3. Operate the machine on a rough surface. Replace the ROPS mounting supports if the ROPS emits a noise. Replace the ROPS mounting supports if the ROPS rattles.

Do not straighten the ROPS. Do not repair the ROPS by welding reinforcement plates to the ROPS.

Consult your Caterpillar dealer for repair of cracks in any welds, in any castings, or in any metal section of the ROPS.

Articulation Bearings - Lubricate

Refer to the Service Manual for the complete adjustment procedure for the engine valve lash.

A qualified mechanic should adjust the engine valve lash because special tools and training are required.

Hydraulic System Oil Filter - Replace

Sign off on the 1000 Hourly Wheel Loader Maintenance

Axle Oscillation Bearings - Lubricate

Apply grease to the remote grease fittings for the trunnion bearings. The grease fittings are located on the left side of the machine near the articulation joint.

Bucket Linkage and Loader Cylinder Bearings - Lubricate

Wipe off the fittings before you apply any lubricant.

Apply lubricant to the grease fittings. The grease fittings are located on each side of the bucket and loader linkage.

Note: The lower bucket pivot bearing needs to be greased at every 50 hour interval.

Steering Cylinder Bearings - Lubricate

Wipe all grease fittings before you apply any lubricant to the grease fittings.

Cooling System Coolant Level - Check

Hydraulic System Oil Level - Check

WARNING: Pressurized system: Hot coolant can cause serious burn. To open cap, stop engine, wait until radiator is cool. Then loosen cap slowly to relieve the pressure.

NOTICE: Mixing ELC with other products will reduce the effectiveness of the coolant. This could result in damage to cooling system components.

If Caterpillar products are not available and commercial products must be used, make sure they have passed the Caterpillar EC-1 specification for pre-mixed or concentrate coolants and Caterpillar Extender.

Note: This machine is shipped with Extended Life Coolant. Extended Life Coolant is recommended for use.

Drain the coolant whenever the coolant is dirty. Drain the coolant whenever the coolant starts to foam.

The overflow tank is located under the access panel on the top of the engine compartment. Use the steps and the handholds on the right side of the machine in order to reach the access panel.

Open the access panel on the top of the engine compartment.

Slowly lift the tab on the cap for the overflow tank in order to relieve system pressure. Remove the cap for the overflow tank.

Open the access doors on both sides of the engine compartment. Remove five bolts (1). Remove plate (2).