Assembly-continued - TM-9-2815-224-34-P0473

TM9-2815-224-34&P

Fan Clutch Maintenance Instructions (Cont)

(85) Keep air pressure applied at 100 psi

(690 kPa) and install shims (53) between

thrust washers (50) and retaining ring

groove (54).

(86) Install retaining ring (55). If retaining

ring cannot be installed, remove one

shim (53).

(87) Release air pressure.

CAUTION

Screws must go through holes on opposite

sides of fan hub or improper adjustment

may result and cause damage to fan clutch

during operation.

(88) Install two 1/2-13 x 2 in. (51 mm)

screws from fan drive overhaul tool kit

through fan hub (27) and finger-tighten

against bearing retainer (31 ).

(89) Rotate fan pulley (5) four turns.

CAUTION

Screws in fan hub must be finger tight and retaining ring must

be against top of groove or incorrect measurement will be

taken and result in improper shim adjustment and possible

damage to fan clutch during operation.

(90) Using feeler gage, measure gap between shims (53) and

retaining ring (55).

NOTE

Shim stack should be arranged so that thickest shims are

against thrust washer and retaining ring, with thinner shims

between.

(91) Add or remove shims (53) as needed, to leave 0.001-in. (0.025 mm) gap between shim and

retaining ring (55).

WARNING

When using compressed air, be sure to use chip guarding and personal protective

equipment, (goggles/shield, gloves, etc. ), to avoid personal injury.

(92) Apply air pressure at 100 psi (690 kPa).

NOTE

If 0.001-in. to 0.003-in. (0.025 to 0.076 mm) gap cannot be reached, perform

steps (94) through (98),

(93) Add or remove shims (53) as needed, to leave 0.003-in. (0.076 mm) gap between shim and

retaining ring (55) with air pressure applied.

18-17