OVERHAUL-TIMING BLOWER ROTORS (cont) - TM-55-1905-220-14-100257

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OVERHAUL-TIMING BLOWER ROTORS

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 -TIMING BLOWER ROTORS (Cont)

c. If the right hand helix gear is

moved out, the right hand helix

rotor will turn counterclockwise

when viewed from the gear end. If

the left hand helix gear is moved

out, the left-hand helix rotor will

turn clockwise when viewed from the

gear end. This positioning of the

gear, to obtain the proper clearance

between the rotor lobes, is known as

blower timing.

d. Moving the gears out or in on the

rotor shafts is accomplished by

adding or removing shims between the

e. The clearance between the rotor

lobes may be checked with 1/2" wide

feeler gages in the manner shown

below. When measuring clearances of

more than .005", laminated feeler

gages that are made up of .002",

.003" or .005" feeler stock are more

practical and suitable than a single

feeler gage. Clearances should be

measured from both the inlet and

outlet sides of the blower.

5-252