Transmission gear train.

(3) Transmission gear train.

(a) Make sure spring is in place when

truck, add 10 quarts of oil to transmission. See LO 10-

3930-618-12 for lubrication requirement.

installing oil strainer in housing.

(d) Test

(b) sure output shaft is installed with

the

operation

the

transmission, use the procedure outlined in paragraph

internal splines to outside of gear case.

3-15b.

cap are positioned down so that oil in cap will drain in

housing.

3-17. Inching Pedal and Brake Pedal

(d) As gears and bearings are being

a. Description. The inching pedal is installed on the

installed, coat with lubricant and make sure they rotate

same shaft as the brake pedal, and cannot be removed

freely.

without removing the brake pedal. The inching pedal

(e) When installing forward and reverse

controls operation of the inching valve, which is part of

drive disc shafts and gears, check to make sure

the transmission control valve assembly and also

snaprings holding gears on shaft are properly installed

actuates the brakes to provide simultaneous

and seated.

transmission disengagement and position braking.

(4) Converter housing and disc drum and

b. Removal.

transmission housing. When installing converter housing

(1) Remove floor plates (TM 10-3930-61820).

and disc drum (as a unit) into the transmission housing,

(2) Disconnect master cylinder clevis pin (fig.

care should be exercised so as not to damage collector

3-28, sheet 1 of 2) from the brake pedal, and the inching

rings fitting into disc drum, as damage to these rings will

pedal pivot shaft (8, fig. 3-28, sheet 2 of 2).

cause the reverse piston and disc to be inoperative.

(3) Remove pedal springs (15) and brake

(5) Control valve assembly and transmission.

pedal bumper (14).

(a) new gaskets when replacing control

(4) Remove pin (6) through brake pedal (4)

and shaft (8).

valve.

(5) Remove shaft support bearing (9) on

(b) capscrews evenly to 5-to 10-foot

steering shaft bracket.

pounds.

(6) Pull shaft through bracket far enough to

(6) Pump assembly and turbine shaft.

slide brake pedal off shaft.

(a) When installing pump assembly on

(7) Push shaft back through bracket, but drop

turbine shaft, collector ring aligning marks must match

the free end below the support bearing on the right frame

marks made in disassembly.

member until shaft drops free.

(b) Make sure rings rotate free on

(8) Slide inching pedal (9, fig. 3-29) off shaft.

collector ring and that rings are properly hooked together

c. Cleaning and Inspection.

at ring ends.

(1) Clean all parts with cleaning solvent and

dry with compressed air.

mounting holes are properly aligned.

(2) Inspect bushings (16) and shaft for

d. Installation.

excessive wear.

NOTE

(3) Inspect treadle pad (8) for cracks,

For

proper

reinstallation

deformation, or other damage.

transmission and torque converter,

(4) Replace damaged or worn parts.

refer to Converter Replacement (para

d. Installation.

2-9d ). After correct alignment has

(1) Reverse removal procedures.

been

obtained,

the

following

(2) Do not attempt to drive roll pin (6, fig. 3-

procedure is recommended:

28) home until holes in brake pedal (4) and shaft (8) are

(1) Mark one mounting strap and flywheel for

properly aligned.

identification and remove converter from flywheel being

e. Adjustment of Inching Pedal Linkage. Because

careful not to damage or loose shims, if any, on

the inching pedal (9, fig. 3-29) stroke is limited by the

converter pilot.

inching valve stroke, the adjustment between-the pedal

(2) Position converter in pump at back of

adjusting screw (14) and the plunger rod (4) must be set

transmission, making sure converter hub tangs properly

so the pedal (9) is fully released when the inching valve

engage pump driven gear.

bottoms. Adjust as follows:

(3) Reinstall transmission on flywheel bell

(1) Remove the floor plate.

housing as follows:

(2) Depress the inching pedal down to the toe

(a) Mount converter to flywheel by

plate. The inching valve plunger rod (4) should move M6

installing capscrews and lockwashers through' inspection

the end of its stroke.

plate in flywheel bell housing.

(3) Slowly release the pedal and observe the

(b) After converter has been securely

action. When the pedal is fully released and resting on

installed, rotate until filler hole appears and add one

the stop, the inching valve plunger rod (4) should just

quart of oil.

bottom.

3-32