120H and 135H Motor Graders Machine Systems Fan and Gear Motor (Hydraulic Fan) - Install Caterpillar

Installation Procedure

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At operating temperature, the hydraulic tank is hot and under pressure. Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin. Remove the filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. Remove the filler cap slowly in order to relieve pressure.

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Illustration 1	g00912925

1. Install Tooling (A) on the hydraulic tank. Attach hose (1A) to the nipple on Tooling (A) and to an air supply. Apply 276 to 414 kPa (40 to 60 psi) of air. This procedure will pull a vacuum on the hydraulic system.

2. Thoroughly clean the tapered shaft and degrease the tapered shaft on the motor.
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   Illustration 2	g00912926

3. Install gear motor (9) on bracket assembly (5). Install bolts (8).

4. Apply Tooling (B) to the threads on the shaft.
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   Illustration 3	g00912929

5. Install fan spider assembly (7). Install nut (6). Tighten nut 6 to a torque of 85 ± 10 N·m (63 ± 7 lb ft).

6. Tap adapter (6A) with a punch and hammer. Again tighten nut (6) to a torque of 85 ± 10 N·m (63 ± 7 lb ft).
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   Illustration 4	g00912924

7. Swing bracket assembly (5) toward the machine and install bolts (4).

8. Connect hose assemblies (3).
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   Illustration 5	g00912927

9. Install grill assembly (2) and bolts (1).

10. Remove Tooling (A).

11. Fill the hydraulic tank. The capacity of the hydraulic tank is approximately 55 L (14.5 US gal). Refer to Operation and Maintenance, "Hydraulic Tank Oil - Change" for the correct filling procedure.