Section IX. TRANSMISSION (GROUP 07)

TM 10-3930-222-20

Section IX. TRANSMISSION (GROUP 07)

14) and separate rods (7 and 11) from

57. General

transmission crank assembly (27) and shifting

The transmission provides a constant mesh with two

shaft (3).

speeds forward and two speeds reverse. The forward or

(2)

Remove capscrews (fig. 69) and lockwasher

reverse speeds are manually selected and oil pressure

that secures bracket to transmission control

from the pump actuates the selected clutch pack. Part

valve and remove rods from control valve.

of the oil provided is used to actuate the forward reverse

(3)

Remove rods from truck.

clutch pack, part of it is used in the torque converter,

and part of it is used to actuate the high-low clutch pack.

b. Installation. Reverse procedures in a above.

Oil flows from the torque converter, through a check

valve, through the filter, through the cooling system, into

c. Adjustment. Adjust the linkage when installing as

the transmission bearing cap then through the high-low

clutch pack.

follows:

(1) Place the transmission levers in neutral.

58. Transmission Oil Filter

(2) With the rods installed in position on the

transmission control valve, either shorten or

lengthen the rods by turning the rod ends until

a. Removal.

the rod ends can be connected to the

(1) Disconnect inlet hose (7, fig. 67) at filter

transmission levers.

assembly.

(2) Disconnect outlet hose (1) at filter assembly.

(3) Unscrew and remove bolts (11), flat washers

60. Transmission Control Levers

(12), lockwashers (15), and nuts (16) that

secure filter bracket (9) to engine bracket (10)

a. Removal.

and remove filter bracket with filter assembly

(1) Refer to paragraph 59 and disconnect linkage.

from engine.

(2) Remove spring pin (2, fig. 68) that secures

(4) Unscrew nuts that secure engine bracket to

forward-and-reverse shift lever (1) to shifting

engine and remove engine bracket.

shaft (3) and remove lever from shaft.

(3) Remove capscrew (3) that secures high-and-

b. Disassembly.

low shift lever (31) to crank assembly (27).

(1) Unscrew filter bolt (25). and remove gasket

(4) Loosen allen head screw on steering post

(24), filter cover (23), gasket (22), spring (21)

bracket. Move bracket up so high and low

and rubber washer (20) from filter body (18).

lever can be removed from crank assembly

(2) Remove element (19) from body.

and remove lever.

(5) Remove capscrews (16 and 18) nuts (21 and

c. Cleaning and Inspection. Clean filter assembly

25) and lockwashers (20 and 24) that secure

with SD and inspect for cracks, broken mounting

bracket assembly (17) to frame and remove

bracket assembly.

bracket, stripped threads. Replace with new assembly

(6) Remove crank assembly and shifting shaft

or element as necessary.

from the bottom of the truck.

(7) Remove shifting shaft from crank assembly.

d. Assembly. Reverse procedures in b above.

(8) Press bushing (26) from bracket assembly

and crank assembly if necessary.

e. Installation. Reverse procedures in a above.

b. Installation.

59. Transmission Linkage

(1) Reverse procedures in a above.

(2) Refer to paragraph 59 and adjust transmission

a. Removal.

linkage, if necessary.

(1) Remove cotter pins (13 and 15, fig. 68) from

straight-headed pins (4) and rod ends (5 and

107