OVERHAUL-TIMING BLOWER ROTORS - TM-55-1905-220-14-100256

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OVERHAUL-ASSEMBLY (cont)

TM-55-1905-220-14-10 Landing Craft Utility LCU 1671-1679 NSN 1905-01-009-1056 Manual

OVERHAUL-TIMING BLOWER ROTORS (cont)

TM 55-1905-220-14-10

5-8. BLOWER-MAINTENANCE INSTRUCTIONS (Continued).

LOCATION

ITEM

ACTION

REMARKS

OVERHAUL-ASSEMBLY (Cont)

OVERHAUL-TIMING BLOWER ROTORS

9. Blower

a. After the blower rotors and timing

gears are installed, the blower

rotors must be timed.

NOTE

Before timing the blower, install four 5/16"-18 X 1-7/8" bolts with flat washers through four bolt

holes in each end plate (top and bottom) and thread them into the blower housing. Tighten the

bolts to 13-17 lb-ft (17.6-23.0 Nm) torque. This will hold the end plates against the blower housing

so the proper clearance between the rotors and the end plate can be obtained.

b. The blower rotors, when properly

positioned in the housing, run with

a slight clearance between the

lobes. This clearance may be varied

by moving one of the helical gears

in or out on the shaft relative to

the other gear.

5-251