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 TM 55-1905-219-14-10
5-8. BLOWER - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
OVERHAUL - TIMING BLOWER ROTORS (Cont)
g. After determining the amount one rotor must be
revolved to obtain the proper clearance, add shims back
of the proper gear as shown below to produce the
desired result. When more or less shims are required,
both gears must be removed from the rotors. Placing a
.003" shim in back of a rotor gear will revolve the rotor
.001".
h. Install the required thickness of shims back of the proper
gear and next to the bearing inner race and install both
gears. Recheck the clearances between the rotor lobes.
i.
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 minimum clearances.
5-254
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