TB 9-2320-335-13&P
3-80.1. FAN BLADE AND FAN CLUTCH MAINTENANCE
(SERIAL NUMBERS 300000 AND ABOVE)
This task covers:
a. Removal
c.
Installation
b. Inspection
INITIAL SETUP:
Tools
Manual References
General mechanic's tool kit:
TB 9-2320-335-13&P, Appendix E
automotive (Appendix B, Item 1)
Equipment Condition
Maintenance and repair shop equipment:
Radiator and fan shroud assembly removed
automotive (Appendix B, Item 2)
Materials/Parts
Maintenance Level
Four lockwashers (Appendix A, Item 144)
Unit
Sealing compound (Appendix C, Item 71)
Six lockwashers (Appendix A, Item 145)
a. Removal
1.
Remove four capscrews (2), lockwashers (3), washers (4), and fan blade (5) from geared fan drive hub (6).
Discard lockwashers (3).
2.
Remove six capscrews (7), lockwashers (8), washers (9), and fan blade (5) from fan clutch (1). Discard
lockwashers (8).
b. Inspection
Inspect fan blade (5), geared fan drive hub (6), and fan clutch (1) for damaged threads, cracks, bent
blades or breaks. Replace if damaged.
c. Installation
CAUTION
Balance holes must face down towards geared fan drive hub.
1.
Apply sealing compound to capscrews (2) and (7).
2.
Install fan clutch (1) on fan blade (5) with six washers (9), lockwashers (8), and capscrews (7).
Tighten capscrew (7) to 13-16 lb-ft (18-22 Nm).
3.
Install fan blade (5) on geared fan drive hub (6) with four washers (4), lockwashers (3), and
capscrews (2). Tighten capscrew (2) to 37 lb-ft (50 Nm).
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