Caterpillar 287 - Semi-Annual Maintenance

Fuel System Filter - Replace

• Open the engine access door. Refer to Operation and Maintenance Manual, “Access Doors and Covers”.

• Support the filter element (2) and rotate the locking ring (1) counterclockwise. Remove the locking ring.

• Remove the filter element. Inspect the fuel filter for debris by cutting the filter open. Discard the filter properly

• Clean the mounting base of the fuel filter. Remove any part of the old seal that remains on the mounting base of the fuel filter.

• Coat the seal of the new fuel filter with clean diesel fuel.

• Install the new fuel filter by hand. Rotate the locking ring clockwise. When the seal contacts the base, tighten the locking ring for an additional three quarters of a turn.

• Prime the fuel system. Refer to Operation and Maintenance Manual, “Fuel System Priming Pump - Operate”.

• Close the engine access door.

Engine Crankcase Breather - Clean

• Open the engine access door. Refer to Operation and Maintenance Manual, “Access Doors and Covers”.

• Tilt the radiator upward. Refer to Operation and Maintenance Manual, “Radiator Tilting”.

• Loosen the hose clamps (1) for the breather hose. Remove the breather hose.

• Remove the screws (3). Remove the breather cover (4).

• Remove the diaphragm assembly (5). The diaphragm assembly consists of the diaphragm and the locating ring. Remove the spring (6).

• Clean the following items with a clean, nonflammable solvent:

• • Breather

• • Breather cover

• • Diaphragm assembly

• • Location ring assembly

• • Spring

• • Breather hose

• Allow the parts to dry. Pressure air may be used to dry the parts.

• Inspect the breather hose for damage. Replace the breather hose, if necessary.

• Install the elements of the breather. Install the breather element cover assembly.

• Install the breather hose and tighten the hose clamps for the breather hose.

• Tilt the radiator downward.

• Close the engine access door.

Rollover Protective Structure (ROPS) and Falling Object Protective Structure (FOPS) - Inspect

• Inspect the ROPS and the FOPS for loose bolts. Tighten the bolts (1) to the following torque 125 ± 10 N·m (92 ± 7 lb ft). Tighten the bolts (2) to the following torque 55 ± 5 N·m (41 ± 4 lb ft). Tighten the bolts (3) to the following torque 240 ± 40 N·m (177 ± 30 lb ft). ROPS and the FOPS for damaged bolts or missing bolts. Replace any damaged bolts or missing bolts with original equipment parts only.

• 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 or the FOPS. Do not repair the ROPS or the FOPS by welding reinforcement plates to the ROPS or the FOPS.

• Consult your Caterpillar dealer for repair of any cracks in the ROPS or the FOPS.

• Inspect the Flying Object Guard (if equipped) for damage.

• Consult your Caterpillar dealer for repair of any cracks in the Flying Object Guard.