Section VII. TEST AND ADJUSTMENT (MODEL T-136-21)

TM 9-2520-246-34

4-25. Assembly of Transfer (Sequence).

g. Idler shaft driving gear (fig. 4-31).

a. Idler shaft rear bearing cover (fig. 4-35).

h. Input shaft front bearing cover (fig. 4-31).

b. Rear output shaft rear bearing cover (fig. 4-35).

i. Front output shaft and reverse shift shaft

assembly (fig. 4-32).

c. Input shaft assembly, fork assembly, and idler shaft

assembly (fig. 4-33).

j. Front output shaft cover assembly (fig. 4-29, 4-

32).

d. Transfer top cover and shifter shaft (fig. 4-34).

k. Companion flanges (fig. 4-30).

e. Rear output shaft assembly (fig. 4-33).

l. Handbrake drum and shoe assembly (fig. 4-27, 4-

f. Case cover (fig. 4-31).

28).

Section VII. TEST AND ADJUSTMENT (MODEL T-136-21)

4-29. Handbrake Test. Pull handbrake lever (fig. 4-

4-26. General. This section provides for the tests

and adjustments of model T-136-21 transfer.

27) to engage brake shoes with handbrake drum.

Release lever and note if shoe return spring pulls free

4-27. Lubrication. Tighten drain plug (fig. 4-27). Lay

of drum. For vehicle test refer to TM 9-2320-209-

20/1.

transfer on side with filler plug up (fig. 4-26). Remove

filler plug and pour pint of universal gear lubricant

(GO), MIL-L-2105, through the plug opening. Install

4-30. Handbrake Shoe Adjustment. If shoes do

not clear drum (4-29 above), check adjustment of shoe

and tighten plug. Lubrication of complete unit should be

anchor pin. If outer shoe is free on anchor pin, tighten

accomplished after installation. Attach tag to filler plug

bolt in shoe stop to increase shoe-to-drum clearance.

giving instructions for filling before transfer is placed in

For in-vehicle adjustment refer to TM 9-2320-209-

service. Refer to paragraph 4-20 and lubrication order

20/1.

(LO 92320-209-12/1) for lubrication specifications.

Tighten filler plug to 40-55 lb-ft torque.

4-31. Adjustment of Rear Output Shaft Bearing.

4-28. Shift Test.

a. Test Bearing Adjustment. Reach inside of case

and turn rear output shaft assembly. Shaft should

a. Neutral. Place shifter shaft in neutral position

drag slightly when turned by hand. If tests indicate

(between "low" (shifter shaft out) and "high" (shifter

bearings are too tight or too loose, shims must be

shaft in)). Turn input shaft by hand. Front and rear

added or removed as directed in b below.

output shafts should not turn.

b. Add or Remove Shims. Remove six capscrews

b. High. Push shifter shaft in to shift to high

and lockwashers holding the rear output shaft-rear

position. Turn input shaft in clockwise direction. Rear

bearing cover (fig. 4-35) to case, and remove cover.

output shaft should revolve in same direction. Front

Add or remove shims as required to obtain a slight

output shaft should not turn.

drag when shaft assembly is turned by hand from

inside the case. Place cover on case, making sure pin

c. Low. Pull shifter shaft out to shift to low

in cover enters hole in case. Install six capscrews and

position. Turn input shaft by hand and note if rear-

lockwashers and tighten to 60-77 lb-ft torque.

output shaft turns approximately one-half as fast as

when in high (b above).

c. Add Shim. When slight drag adjustment has

been obtained, remove rear output shaft rear bearing

d. Sprag Unit Test. With shifter shaft in either low

cover and add one 0.003-inch shim. Install cover (b.

or high position, front output shaft should turn freely

above). This will provide and ensure the proper end

in a clockwise direction but should not turn

play.

counterclockwise when input shaft is held stationary.

4-32. Adjustment of Idler Shaft Bearing.

With reverse shift shaft held in, front output shaft

should turn freely in counterclockwise direction but

a. Test Bearing Adjustment. Reach inside of case

should not turn clockwise when input shaft is held

and turn idler shaft assembly. Shaft should have slight

stationary.

4-30