OVERHAUL - TIMING BLOWER ROTORS (cont) - TM-55-1905-219-14-100583

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OVERHAUL - TIMING BLOWER ROTORS (cont)

TM-55-1905-219-14-10 Landng Craft Utility LCU 1667 - 1670 (1905-00-168-5764) Manual

OVERHAUL - TIMING BLOWER ROTORS (cont)

TM 55-1905-219-14-10

5-35. BLOWER - MAINTENANCE INSTRUCTIONS (Continued).

LOCATION

ITEM

ACTION

REMARKS

OVERHAUL - TIMING BLOWER ROTORS (Cont)

NOTE

If the proper clearances cannot be obtained between the rotors,

a mix of the former and current rotors, which have a different

helix angle, may have occurred.

g. After determining the amount one rotor must be re- volved to obtain the proper

clearance, add shims back of the proper gear as shown be w to pro- duce the

desired result. When more or less shims are required, both gears must be removed

from the rotors. Placing a .003 inch shim in back of a rotor gear will revolve the

rotor .001 inch.

h. Install the required thickness of shims in back of the proper gear and next to the

bearing inner race and reinstall both gears. Recheck the clearances between the

rotor lobes.

Determine the minimum clearances at points "A" and "B". Insert the feeler gages,

between the end plates and the ends of the rotors. This operation must be

performed at the ends of each lobe, making 12 measurements in all. See below

for the mini- mum clearances.

5-582