Chapter 6. TRANSMISSION REPAIR INSTRUCTIONS

TM 10-3930-621-34

CHAPTER 6

TRANSMISSION REPAIR INSTRUCTIONS

Section I. TRANSMISSION ASSEMBLY

applied behind the disc pistons, causing engagement

6-1. Description

with the drum. The assembly operates in oil for cooling

a. Components. The transmission

assembly

and lubrication.

consists of a single speed constant mesh transmission,

(2) If the reverse disc is activated, power is

drum and disc assembly, and a gear type oil pump

delivered to the transmission through a hollow shaft,

assembly. Components attached to, and functioning

which connects the reverse gear and reverse clutch. If

with, the transmission assembly are a control valve

the forward disc is actuated, power is delivered to the

assembly and torque converter.

transmission through a solid shaft, which rotates inside

b. Mechanical Operation.

the hollow reverse shaft, connecting the forward gear

(1) Power from the engine is transmitted to a

and forward clutch disc.

torque converter which drives a pump and disc

c. Hydraulic Operation.

and drum assembly. The disc and drum assembly

(1) Refer to figure 6-1 for system schematic.

contains a drum, forward and reverse discs, pistons, and

cylinders.

Discs are engaged by oil pressure

6-1