Fan and Fan Drive Assembly

b. Cleaning, Inspection, and Repair.

b. Disassembly.

(1) Remove 2 bolts (7, fig. 5-15) and washers

(8) and remove the large washer (9) from bracket

assembly (17).

(2) Pull the hub (13) with bearing (11) and

(1) Discard all gaskets, clean all parts with

seal (10) from bracket assembly (17).

dry cleaning solvent (Fed Spec. P-D-680) and dry

(3) Remove seal (15), bearing (14), and

with compressed air.

spacer (16) from bracket assembly (17).

(2) Inspect oil cooler core and oil filter base

c. Cleaning. Clean all parts except bearings

for cracks, breaks, leaks or other defects. Replace a

with cleaning solvent (Fed. Spec. P-D-680). Refer

defective core or oil filter base.

to paragraph 2-6 for the care and cleaning of

(3) Inspect all mounting hardware or hose for

bearings.

damage or defects. Replace all defective parts.

d. Inspection and Repair.

(4) Repair all small leaks in oil cooler core by

(1) Inspect the fan assembly (3) for bent,

brazing or silver soldering.

cracked, or missing blades. Rotate each blade thru

c. Test. The oil cooler core will be immersed in

both the suction and blower positions and note if

water and compressed air applied to test for leaks.

blade shaft detent securely locks blade at the

Cap both openings of core and apply 10-12 lbs. of

correct attitude.

air on the coolant side of the core

(2) Inspect fan drive assembly for cracks, a

d. Installation. Reverse removal procedure and

bent shaft, or other damage. Weld minor cracks

install the engine oil cooler on the engine. Install

according to TM 9-237.

new gaskets and oil filters. Start engine and check

(3) Replace fan assembly or fan drive

oil level and replenish if low (LO 5-2410-233-12).

assembly if defective.

5-8. Fan and Fan Drive Assembly

e. Reassembly and Installation. Reverse

a. Removal.

disassembly and removal procedure and reassemble

(1) Remove the radiator and radiator guard

and install the fan and fan drive assembly on the

from the tractor (para 5-3).

engine. Refer to LO 5-2410-233-12 and lubricate

(2) Loosen and remove fan belts (para 5-5).

fan hub.

(3) Remove the fan guard (para 5-4) and lift

NOTE

the fan assembly from radiator guard.

Be certain all blades are in the same position (suction

(4) Attach a hoist to the fan drive assembly

or blower) in the fan assembly.

(fig. 5-7).

(5) Remove the bolts (18, fig. 5-15) securing

tbe fan drive assembly and remove from the engine.

Key to figure 5-15.

1 Bolt

2 Washer

3 Fan assembly

4 Bolt

5 Washer

6 Adapter

7 Bolt

8 Washer

9 Washer

10 Seal

11 Bearing

12 Spacer

13 Hub

14 Bearing

15 Seal

16 Spacer

17 Bracket assembly

18 Bolt

5-18