NO. 120 MOTOR GRADER Every 250 Service Hours Or Monthly Caterpillar


Every 250 Service Hours Or Monthly
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1.1. (20)Fan Bearing
2.1. (21)Rear Axle Housing Bracket Caps
3.1. (22)Governor Control Linkage
4.1. (23)Power Control Input Shaft, Engine Mounting Trunnion Bearing And Flywheel Clutch And Brake Shaft Bearings
5.1. (24)Transmission And Flywheel Clutch
6.1. (25)Hydraulic Brake Master Cylinder
7.1. (26)Fan Belts
8.2. To adjust belts:

(20)Fan Bearing

Lubricate 1 fitting.

(21)Rear Axle Housing Bracket Caps

Lubricate 1 fitting in cap on each side. Total 2 fittings.

(22)Governor Control Linkage

Lubricate 5 fittings.

(23)Power Control Input Shaft, Engine Mounting Trunnion Bearing And Flywheel Clutch And Brake Shaft Bearings

Lubricate 4 fittings.

(24)Transmission And Flywheel Clutch

Check oil level with engine running, oil hot, machine level and parking brake set. Maintain oil level between ADD and FULL marks on gauge.

(25)Hydraulic Brake Master Cylinder

1. Remove filler plug in top of reservoir housing.

2. Maintain fluid level 1/2 inch below filler opening.

3. Install filler plug.

(26)Fan Belts

1. Check condition and adjustment of fan and generator or alternator belts.

2. Belts should deflect 7/8 inch (22 mm) under 25 lbs. (11,5 kg) force.

To adjust belts:

Loosen generator or alternator mounting bolts and move in or out as required. Tighten bolts.