TM 5-3805-291-23-1
THEORY OF OPERATION - CONTINUED
0003 00
POWERTRAIN - CONTINUED
a.
All outlet oil from torque converter oil cooler goes through a line to oil inlet port (20) on housing assembly (1). Oil
goes through passage (18) in housing assembly, where some oil flows into passage (17), and from there, flows to
bearing (15). Remaining oil flowing through passage (18) flows into oil chamber (2) at front of transmission.
b.
Some oil from oil chamber (2) flows to No. 1 planetary shafts (22), which have drilled passages to allow oil to flow
to bearings. Oil flows around shaft bearings, then through holes in coupling (21) to help lubricate discs and plates
of No. 1 clutch.
c.
Remaining oil from oil chamber (2) flows into passage (4) in reverse carrier. Some oil flows through passage (3) to
lubricate No. 1 clutch discs and plates. Remaining oil from passage (4) fills oil chamber (23).
d.
Some oil from oil chamber (23) flows to No. 2 and 3 planetary shafts (24), which have drilled passages to allow oil
to flow to bearings. Oil flows around shaft bearings, then through holes in ring gears (25 and 26) to help lubricate
No. 2 and No. 3 clutch discs and plates. Some oil from oil chamber (23) lubricates bearing (6) and flows through
passage (5) in carrier to lubricate No. 2 clutch discs and plates.
e.
Some oil from passage (18) also flows through passage (13) of input shaft. Next, oil flows into an area between
input shaft and output shaft. This oil lubricates bearings (7 and 16). Oil flows from an area between input shaft and
output shaft through passage (27). Some of this oil lubricates bearing (8). From passage (27), oil flows into oil
chambers (29 and 31). Some oil in chamber (29) flows into No. 4 planetary shafts (28).
f.
No. 4 planetary shafts (28) have drilled passages which allow oil to flow to bearings. Oil flows around shaft bear-
ings, then some oil flows to bearing (8). Oil flows from oil chamber (31) through holes in rotating hub (9) to lubri-
cates No. 5 clutch discs and plates. Then, this oil flows through holes in ring gear (30) to lubricate No. 4 clutch
discs and plates.
g.
Some oil from passage (18) flows through passage (10) to fill oil chamber (12). Oil in oil chamber (12) lubricates
bearing (14). Most oil in oil chamber (12) flows to No. 6 planetary shafts (19), which have drilled passages to
allow oil to flow to bearings. Oil flows around planetary shaft bearings and through holes in ring gear (32). This oil
lubricates No. 6 clutch discs and plates.
h.
Restrictions inside transmission keep lubrication pressure of warm oil at approximately 20 psi (138 kPa). All leak-
age oil from clutches and return lubrication oil goes to bottom of transmission case. This oil goes to main oil reser-
voir in output gear case.
0003 00-48
