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TM 9-2520-246-34
(2) Positive locking transfer, model T-136-27,
(2) Although transmission models 3052 and
shown in figures 1-5 and 1-6 is a two-speed
3053A appear outwardly identical, the internal
synchromesh unit driven by the transmission propeller
mechanism is different. Transmission 3052 is equipped
shaft. This transfer is equipped with an air selector
with five forward speeds and fifth speed is a direct
valve that enables the air locking assembly to engage
drive. Transmission model 3053A also is a five-speed
the front output shaft to the rear output shaft for
transmission, but fourth speed is a direct drive and
driving the front axle. Selection of the high or low
fifth speed is overdrive. The different shift patterns for
ranges of the transfer provides the truck operator with
each transmission are shown in figures 1-3 and 1-4.
a total of ten forward speeds and two reverse speeds.
(3) Transmission model 3052 is installed on all
(3) Transfer model T-136-21, figures 1-7 and 1-8,
M44, 2-ton, 6x6 series trucks equipped with a
is designed to drive the front axle slightly slower than
gasoline engine. Transmission model 3053A is
the rear axles and this difference in speed is taken up
installed on all M44A1 and M44A2, 2-ton, 6x6
by an overrunning sprag unit on the front output
series trucks equipped with a multifuel engine.
shaft during normal operation. When the rear wheels
lose traction, the sprag unit automatically engages and
the front wheels also drive the vehicle. Refer to
Chapter 4 for a detailed description and operation of
c. Transfers.
transfers T-136-27 and T-136-21.
(1) Transfer models T-136-21 and T-136-27 are
(4) Vehicle model application.
two-speed synchromesh units driven from the
transmission through a propeller shaft. The transfers
(a) Transfer model T-136-21 can be used on all
distribute power to front and rear axles through
M44 and M44A1, 2-ton, 6x6 series trucks.
propeller shafts.
Figure 1-5. Positive Locking Transfer Model T-136-27 (Front View).
1-3

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