Determine thickness of shim - TM-9-2520-238-340105

TM 9-2520-238-34

REPAIR COOLING FAN RIGHT ANGLE DRIVE C (M113A3 FOV ONLY) -- Continued

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NOTE

Install cartridge assembly with the word TOP facing up.

10. Determine thickness of shim (1) as follows:

Without installing laminated shim (1), install cartridge assembly (2) and retainer (3) on housing (4) with four

washers (5) and bolts (6). Tighten bolts snug.

Measure and record inside diameter of bore in housing (4) as dimension A. Use caliper set.

Place housing (4) on clean, flat surface. Measure from face of bevel gear (7) to surface and from edge of bore in

housing to surface. Subtract second reading from first. Record as dimension B. Use caliper set and dial indicator

Calculate shim thickness using above measurements, dimension C recorded in (Step 7), and M.D. dimension

(etched on bevel gear) recorded in (Step 8). Shim thickness = M.D. -A/2 + B C

Peel new laminated shim (1) to calculated thickness or next thinner laminate. Keep removed laminates for later use

in (Step 21) below.

Remove four bolts (6), washers (5), retainer (3), and cartridge assembly (2) from housing (4).

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