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 TM 55-1905-219-14-10
5-35. BLOWER - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
OVERHAUL - TIMING BLOWER ROTORS
f.
Time the rotors as follows: Time the rotors to have from .002 inch to .006 inch
clearance between the TRAILING edge of the right- hand helix rotor and the
LEADING edge of the left- hand helix rotor measured from both the inlet and outlet
sides as shown above and below. If possible, keep this clearance to the minimum
(.002 inch). Then, check the clearance between the LEADING edge of the right-
hand helix rotor and the TRAILING edge of the left-hand helix rotor ("C" clearance)
for the minimum clearance of (.012 inch). Rotor- to-rotor mesurements should be
taken 1 inch from each end, and at the center of the blower.
5-581
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