POWER TRAIN
TRANSMISSION
TM 5-3805-258-24-1
S Y S T E M S O P E R A T I O N
FIRST SPEED REVERSE
POWER FLOW IN FIRST SPEED REVERSE (No. 1 and No. 6 Clutches Engaged)
1. Ring gear for No. 1
10. No. 4 carrier.
clutch.
11. No. 4 aurr gear.
2. Coupling gear.
13. Ring gear for No. 4
3. No. 1 clutch.
clutch.
7. No. 2 and No. 3 carrier.
16. No. 6 clutch.
9. Ring geer for No. 3
17. Ring gear for No. 6
clutch.
clutch.
When the transmission is in FIRST SPEED RE-
VERSE, No. 1 and No. 6 clutches are engaged. The
No. 1 clutch holds ring gear (1) for the No. 1 clutch
stationary. The No. 6 clutch holds ring gear (17) for
the No. 6 clutch stationary. Input shaft (23) turns
No. 1 sun gear (21). No. 1 sun gear turns No. 1
planetary gears (24). No. 1 carrier (20) is in direct
mechanical connection with ring gear (1).
Since ring gear (1) is held stationary by the No. 1
clutch, so is No. 1 carrier (20). The movement of No.
1 planetary gears (24) causes coupling gear (2) to
turn in the opposite direction of input shaft (23).
Coupling gear (2) is in direct mechanical connection
with No. 2 and No. 3 carrier (7). As the No. 2 and
No. 3 carrier turns, No. 3 planetary gears (26) turn.
The No. 3 planetary gears turn ring gear (9) for the
No. 3 clutch and output shaft (22). Ring gear (9)
18. No. 6 carrier.
24. No. 1 planetary geara.
19. No. 6 aun gear.
26. No. 3 planetary geara.
20. No. 1 carrier.
27. No. 4 planetary geara.
21. No. 1 aun gear.
28. Housing aaaembly.
22. Output shaft.
29. No. 6 planetary geara.
23. Input shaft.
turns No. 4 carrier (10). As the No. 4 carrier turns,
No. 4 planetary gears (27) turn. The No. 4 planetary
gears turn ring gear (13) for the No. 4 clutch, which
is fastened to housing assembly (28) by bolts. The
No. 4 planetary gears also turn No. 4 sun gear (11).
No. 4 sun gear turns output shaft (22). Since ring
gear (17) is held stationary by the No. 6 clutch,
planetary gears (29) move around the inside of the
ring gear. The movement of planetary gears (29) and
No. 6 carrier (18), causes No. 6 sun gear to turn. No.
6 sun gear turns housing assembly (28) and output
shaft (22).
As a result, torque to output shaft (22) is divided
through No. 3 planetary gears (26), No. 4 sun gear
(11 ) and No. 6 sun gear (19). From the output shaft,
power goes through the output transfer gears to the
differentials.
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