FINAL AND TANDEM DRIVES
SYSTEMS OPERATION
FINAL AND TANDEM DRIVES
TM 5-3805-263-14&P-2
The final drive is a planetary gear system. Shaft
(1) is connected to the differential at one end and to
the sun gear (2) at the other end with splines. The
ring gear (10) of the planetary system is connected to
the housing (11). As shaft (1) is turned by the differ-
ential sun gear (2) turns planet gears (9). Because
the ring gear (10) is held by the housing, the planet
gears (9) (turned by the sun gear) make the carrier (3)
turn at a slower speed than the sun gear (2).
The carrier (3) is connected to the outer shaft (4)
and the flow of power goes from the carrier (3),
through the outer shaft (4), and to the drive sprockets
(5). Power from the drive sprockets (5) goes through
drive chains (6) and (7) to the driven sprockets (8).
The driven sprockets (8) are connected to the wheel
spindles (15) with splines. All gears, bearings, and
chains get lubrication from oil thrown about the
housings. Shim pack (17) maintains proper rotating
clearance between inner and outer housings (11 &
13).
The tandem housing is connected to housing (13)
with bolts. This lets the wheels move the ends of the
tandem housing up and down in relation to housing
(11). Two rings (12), thrust washers (14) and two
seals (16 & 18) are between housing (11) and housing
(13).
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