BLOWER REPAIR (cont.) -726030158

TM 9-2320-360-34-2

NOTE

If clearance is correct, go to step

(45).

To change gap between rotor

lobes by 0.001 in. (0.025 mm), add

or remove 0.003 in. (0.076 mm)

shim.

Placing shims behind right-side

gear on gear end will turn right-

hand rotor counterclockwise.

Placing shims behind left-side

gear on gear end will turn left-

hand rotor clockwise.

(40) If clearance Is not correct, determine amount of

movement required to obtain correct clearance.

(41) Remove gears (para 20-2a, steps (9) thru (14)).

(42) Add shims (33) between gears (22 or 23) and

spacers (21) to obtain correct clearance.

(43) Repeat steps (29) thru (32) and (36) thru (40).

(44) If correct clearance cannot be obtained using

shims, replace rotor (8 or 9).

NOTE

There are 12 measurements for

checking clearance between rotor

lobes and end plates, 6 for front end

plate and 6 for rear end plate.

(45) Place 0.007 in.

(0.178 mm) feeler gage

between one lobe of rotor (9) and rear end plate

(1).

(46) Repeat step (45) for other two lobes of rotor (9)

and three lobes of rotor (8).

(47) If clearance is not correct, replace rear end plate

(1).

(48) Place 0.019 in. (0.48 mm) feeler gage between

one lobe of rotor (8) and front end plate (6).

(49) Repeat step (48) fo r other two lobes of rotor (8)

and three lobes of rotor (9).

(50) If clearance is not correct, replace front end

plate (6).

20-13