CHAPTER 4. REPAIR OF TRANSFERS

TM 9-2520-246-34

CHAPTER 4

REPAIR OF TRANSFERS

Section I. DESCRIPTION, OPERATION, AND DATA

(MODEL T-136-27)

and outer brakeshoe and lever assembly is supported

4-1. General. This chapter provides the repair

on the transfer rear output rear bearing cover.

instructions for positive locking transfer model T-136-

27. (See fig. 4-1 and 4-2.)

b. Operation. The selection of high or low range in

the transfer is accomplished by a shifting mechanism,

4-2. Description and Operation.

which moves the synchronizer into contact with the

input-shaft low-speed gear or the input-shaft high-

speed gear. With positive locking engaged, power is

a. Description. The positive locking transfer is a

distributed to front and rear axles when transmission

two-speed synchromesh unit with front and rear

is placed in the selected gear.

output shafts. The transfer unit is driven by the

regular 5-speed transmission through a propeller shaft.

(1) Low Range. When the transfer is shifted to

Low or high gear selection through the transfer gives

low range, the synchronizer assembly is moved

the truck a total of ten forward gears, and two reverse

forward on the input shaft to engage the input-shaft

gears. With the operation of an air selector valve (fig.

low-speed gear which is in mesh with the countershaft

4-1), the air locking assembly engages the front output

low-speed gear. Because the low-speed gear is keyed to

shaft to the rear output shaft to drive the front axle.

the countershaft, the power flow is through the

The transfer distributes the power to front and rear

countershaft gears, to the rear (and front if lock-up

axles through the propeller shafts. The handbrake

assembly is engaged) output-shaft gears and to the

drum is mounted in the transfer rear output shaft

companion flanges.

companion flange. (See fig. 4-2.) The handbrake inner

Figure 4-1. Positive Locking Transfer Model T-136-27 -- Front View.

4-1