b. Cleaning
TM 9-2815-237-34
2-40. FAN DRIVE REPAIR (Cont’d)
WARNING
l Compressed air used for cleaning purposes will not exceed 30 psi
(207 kPa). Use only with effective chip guarding and personal
protective equipment (goggles/shield, gloves, etc.).
l Do not use compressed air to spin bearings. Spinning a dry
bearing with compressed air may cause injury to personnel or
damage to equipment.
1. Clean shaft assembly (7) and housing (2) with compressed air and wipe with clean cloth.
2. Clean all other parts in accordance with para. 2-9.
c. Inspection
NOTE
For general inspection instructions, refer to para. 2-10.
1. Inspect cylinder assembly (9) for damage. Replace if damaged.
2. Inspect dust seal (10) for cracks in the seal or pieces missing from it. Replace dust seal (10) if
cracked or pieces missing from it. Ensure lip of seal is facing out.
3. Inspect roller bearings (3) and (4) in housing assembly (2) for damage. Replace fan drive assembly
if damaged.
4. Inspect lip seal (5) in housing assembly (2) for damage. Replace fan drive assembly if damaged.
5. Inspect studs (1) on housing assembly (2) for stripped threads. Replace if damaged.
6. Inspect seal surface (6) on shaft assembly (7) for damage. Replace fan drive assembly if damaged.
7. Inspect bearing (8) on shaft assembly (7) for damage. Replace fan drive assembly if damaged.
2-150
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