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TM 9-2815-202-34
NOTE
(41)
(42)
When different shims are required, always remove both gears from rotors. Placing a
0.003-inch shim in back of a right hand helix rotor gear (11 ) will decrease (CC)
clearance 0.001 inch.
Remove blower gears (12 and 17) and install required thickness of shims in back of proper
gear. Install gears and check clearance as outlined in steps (37) and (38).
Check clearances at points (A) and (B). Insert feeler gages between end plates (22 and 23)
and ends of rotors (6 and 7). Measure clearance for each lobe end (total of twelve). Minimum
clearance at (A) is 0.007 inch and at (B) is 0.014 inch.
4-246
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