TRANSFER GEARS AND TRANSMISSION
TM 5-3805-263-14&P-2
T R A N S M I S S I O N G E A R S
The planetary transmission has six forward and
six reverse speeds. The selection of speed and direc-
tion is done manually. Control of the transmission
is done hydraulically. The transmission is driven by
gears which are turned directly by an adaptor on
the input gear shaft, which is driven directly by the
engine flywheel. The gears have two turning
clutches; A FORWARD clutch and a REVERSE
clutch.
The adapter on the input gear shaft turns input
gear (1). Input gear (1) turns against the FOR-
WARD input gear (2) which turns REVERSE in-
put gear (3). There is no flow of power when the
direction clutches, in front of input gear (2) and in-
put gear (3), are not engaged. When the FOR-
WARD clutch (No. 1 clutch) is engaged, output
gear (4) turns against idler gear (6) which turns
planetary input gear (7). Since the REVERSE
clutch is not engaged, output gear (5) is free to
turn with idler gear (6). When the REVERSE
clutch (No. 2 clutch) is engaged, the FORWARD
clutch is not engaged, and the output gear (5)
turns idler gear (6) which drives planetary input
gear (7) in the opposite direction.
2-4
SYSTEMS OPERATIONS
