120H, 12H, 135H, 140H, 143H, 160H and 163H Motor Graders Caterpillar


Transmission

Usage:

120H 124

Forward Gears



Illustration 1g01013086
Power Flow (First Gear Forward)
(1) Directional clutch pack (forward high)
(2) Directional clutch pack (forward low)
(3) Directional clutch pack (reverse)
(4) Speed clutch pack (second speed)
(5) Speed clutch pack (third speed)
(6) Speed clutch pack (first speed)
(7) Range clutch pack (low range)
(8) Range clutch pack (high range)
(9) Gear
(10) Gear
(11) Input shaft assembly
(12) Gear
(13) Gear
(14) Gear
(15) Forward shaft assembly
(16) Gear
(17) Gear
(18) Gear
(19) Gear
(20) Second and reverse shaft assembly
(21) Gear
(22) Gear
(23) Gear
(24) Gear
(25) Gear
(26) First/Third shaft assembly
(27) Gear
(28) Gear
(29) High/Low shaft assembly
(30) Output yoke

First Gear Forward

When clutch (1) is engaged, power is transmitted from gear (10) on shaft (11) to gear (13) on shaft (15). Gear (13) transfers power to shaft (15). Gear (12) on the shaft (15) drives gear (16) on the shaft (20). Shaft (20) transfers power to gear (19). Gear (19) drives gear (21) on the shaft (26).

When clutch (6) is engaged, power transfers from gear (21) to shaft (26). Gear (25) on shaft (26) transfers power to gear (28) on shaft (29).

When clutch (7) is engaged, power is transferred from gear (28) to shaft (29) and to output yoke (30).

Second Gear Forward

When clutch (2) is engaged, the power is transmitted from gear (9) on shaft (11) to gear (14) on shaft (15). Gear (14) transfers power to shaft (15). Gear (12) on shaft (15) drives gear (16) on shaft (20).

When clutch (4) is engaged, power is transferred from shaft (20) to gear (18). Gear (18) drives gear (22) on shaft (26). Gear (25) on shaft (26) transfers power to gear (28) on shaft (29).

When clutch (7) is engaged, power is transferred from gear (28) to shaft (29) and to output yoke (30).

Third Gear Forward

When clutch (2) is engaged, power is transmitted from gear (9) on shaft (11) to gear (14) on shaft (15). Gear (14) transfers power to shaft (15). Gear (12) on shaft (15) drives gear (16) on shaft (20). Gear (16) on shaft (20) drives gear (24) on shaft (26).

When clutch (5) is engaged, power is transferred from gear (24) to shaft (26). Gear (25) on shaft (26) transfers power to gear (28) on shaft (29).

When clutch (7) is engaged, power is transferred from gear (28) to shaft (29) and to output yoke (30).

Fourth Gear Forward

When clutch (1) is engaged, power is transmitted from gear (10) on shaft (11) to gear (13) on shaft (15). Gear (13) transfers power to shaft (15). Gear (12) on shaft (15) drives gear (16) on shaft (20). The gear (16) on shaft (20) drives gear (24) on shaft (26).

When clutch (5) is engaged, power is transferred from gear (24) to shaft (26). Gear (25) on shaft (26) transfers power to gear (28) on shaft (29).

When clutch (7) is engaged, power is transferred from gear (28) to shaft (29) and to output yoke (30).

Fifth Gear Forward

When clutch (1) is engaged, power is transmitted from gear (10) on shaft (11) to gear (13) on shaft (15). Gear (13) transfers power to shaft (15). Gear (12) on shaft (15) drives gear (16) on shaft (20). Gear (19) on shaft (20) drives gear (21) on shaft (26).

When clutch (6) is engaged, power is transferred from gear (21) to shaft (26). Gear (23) on shaft (26) transfers power to gear (27) on shaft (29).

When clutch (8) is engaged, power is transferred from gear (27) to shaft (29) and to output yoke (30).

Sixth Gear Forward

When clutch (2) is engaged, power is transmitted from gear (9) on shaft (11) to gear (14) on shaft (15). Gear (14) transfers power to shaft (15). Gear (12) on shaft (15) drives gear (16) on shaft (20).

When clutch (4) is engaged, power is transferred from shaft (20) to gear (18). Gear (18) drives gear (22) on shaft (26). Gear (23) on shaft (26) transfers power to gear (27) on shaft (29).

When clutch (8) is engaged, power is transferred from gear (27) to shaft (29) and to output yoke (30).

Seventh Gear Forward

When clutch (1) is engaged, power is transmitted from gear (10) on shaft (11) to gear (13) on shaft (15). Gear (13) transfers power to shaft (15). Gear (12) on shaft (15) drives gear (16) on shaft (20).

When clutch (4) is engaged, power is transferred from shaft (20) to gear (18). Gear (18) drives gear (22) on shaft (26). Gear (23) on shaft (26) transfers power to gear (27) on shaft (29).

When clutch (8) is engaged, power is transferred from gear (27) to shaft (29) and to output yoke (30).

Eighth Gear Forward

When clutch (1) is engaged, power is transmitted from gear (10) on shaft (11) to gear (13) on shaft (15). Gear (13) transfers power to shaft (15). Gear (12) on the shaft (15) drives gear (16) on shaft (20). Gear (16) on shaft (20) drives gear (24) on shaft (26).

When clutch (5) is engaged, power is transferred from gear (24) to shaft (26). Gear (23) on shaft (26) transfers power to gear (27) on the shaft (29).

When clutch (8) is engaged, power is transferred from gear (27) to shaft (29) and to output yoke (30).

Reverse Gears



Illustration 2g01013087
Power Flow (First Gear Reverse)
(1) Directional clutch pack (forward high)
(2) Directional clutch pack (forward low)
(3) Directional clutch pack (reverse)
(4) Speed clutch pack (second speed)
(5) Speed clutch pack (third speed)
(6) Speed clutch pack (first speed)
(7) Range clutch pack (low range)
(8) Range clutch pack (high range)
(9) Gear
(10) Gear
(11) Input shaft assembly
(12) Gear
(13) Gear
(14) Gear
(15) Forward shaft assembly
(16) Gear
(17) Gear
(18) Gear
(19) Gear
(20) Second and reverse shaft assembly
(21) Gear
(22) Gear
(23) Gear
(24) Gear
(25) Gear
(26) First/Third shaft assembly
(27) Gear
(28) Gear
(29) High/Low shaft assembly
(30) Output yoke

First Gear Reverse

When clutch (3) is engaged, power is transmitted from gear (9) on shaft (11) to gear (17) on shaft (20). Gear (17) transfers power to shaft (20). Gear (19) on the shaft (20) drives gear (21) on shaft (26).

When clutch (6) is engaged, power is transferred from gear (21) to shaft (26). Gear (25) on shaft (26) transfers power to gear (28) on shaft (29).

When clutch (7) is engaged, power is transferred from gear (28) to shaft (29) and to output yoke (30).

Second Gear Reverse

When clutch (3) is engaged, power is transmitted from gear (9) on input shaft (11) to gear (17) on shaft (20). Gear (17) transfers power to the shaft (20).

When clutch (4) is engaged, power is transferred from shaft (20) to gear (18). Gear (18) drives gear (22) on shaft (26). Gear (25) on shaft (26) transfers power to gear (28) on shaft (29).

When clutch (7) is engaged, power is transferred from gear (28) to shaft (29) and to output yoke (30).

Third Gear Reverse

When clutch (3) is engaged, power is transmitted from gear (9) on input shaft (11) to gear (17) on shaft (20). Gear (17) transfers power to shaft (20). Gear (16) on shaft (20) drives gear (24) on shaft (26).

When clutch (5) is engaged, power is transferred from gear (24) to shaft (26). Gear (25) on shaft (26) transfers power to gear (28) on shaft (26).

When clutch (7) is engaged, power is transferred from gear (28) to shaft (29) and to output yoke (30).

Fourth Gear Reverse

When clutch (3) is engaged, power is transmitted from gear (9) on shaft (11) to gear (17) on shaft (20). Gear (17) transfers power to shaft (20). Gear (19) on shaft (20) drives gear (21) on shaft (26).

When clutch (6) is engaged, power is transferred from gear (21) to shaft (26). Gear (23) on shaft (26) transfers power to gear (27) on shaft (29).

When clutch (8) is engaged, power is transferred from gear (27) to shaft (29) and to output yoke (30).

Fifth Gear Reverse

When clutch (3) is engaged, power is transmitted from gear (9) on shaft (11) to gear (17) on shaft (20). Gear (17) transfers power to shaft (20).

When clutch (4) is engaged, power is transferred from shaft (20) to gear (18). Gear (18) drives gear (22) on shaft (26). Gear (23) on shaft (26) transfers power to gear (27) on shaft (29).

When clutch (8) is engaged, power is transferred from gear (27) to shaft (29) and to output yoke (30).

Sixth Gear Reverse

When clutch (3) is engaged, power is transmitted from gear (9) on shaft (11) to gear (17) on shaft (20). Gear (17) transfers power to shaft (20). Gear (16) on shaft (20) drives gear (24) on shaft (26).

When clutch (5) is engaged, power is transferred from gear (24) to shaft (26). Gear (23) on shaft (26) transfers power to gear (27) on shaft (29).

When clutch (8) is engaged, power is transferred from gear (27) to shaft (29) and to output yoke (30).

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