Pump Pressure.

TM 10-3930-621-34

(d) Install sealing rings (14, fig. 6-7) in retainer

bolts (9) and lock washers (10). Aline match marks on

ring and housing.

(111. Rings must rotate free of ring and be securely

(11) Using new gasket, install control valve

hooked together at ring ends.

(e) Aline retainer match marks made in

assembly on transmission case.

disassembly and install retainer (11) and secure with lock

6-6. Installation

washers (13) and bolts (12).

Refer to paragraph 2-6 for installation procedures.

(7) Install forward gear and shaft as follows:

6-7. Testing

(a) Holding forward gear (2, fig.

6-6) in

General.

Since the transmission is

transmission case, install forward shaft through retainer

dependent upon correct operating pressures for efficient

opening, forward gear, and into hollow reverse shaft

operation, the pressure should be checked for the

(44). Check position of needle bearings (42 and 43) on

following:

shafts.

(1) Pump pressure

(b)Secure forward gear (2) to shaft (4) with two

(2) Converter pressure

retaining rings (3).

(3) Clutch pack pressures at stall and free

Caution: Retaining rings must be seated

running.

Note. Oil temperature should be 80 to 1000F

firmly.

when checking pressures.

b. Pump Pressure.

ring (7). Lateral movement of this bearing depends on

(1) Install pressure gage, calibrated to 300 psi in

the firm seating on both retaining rings. Check each

port "P" (fig. 6-8) on transmission forward of flywheel

before proceeding.

housing inspection cover.

(d) Using a new gasket (7), install retainer (8)

(2) Place transmission in neutral and start

and gasket to transmission case (32) and secure with

engine.

lock washers (9) and bolts (10).

(3) Accelerate to full governed speed and note

(8) Install disc and drum assembly on converter

gage pressure.

housing as follows:

(4) If pressure is between 100 to 150 psi,

(a) Install lubricated bearing (27, fig. 6-3) in

converter pump is in normal operating condition.

converter housing.

(5) If pressure is over 150 psi, check the

(b) Slide converter housing on disc and drum

following:

assembly, and secure with a retaining ring (7, fig. 6-7) on

(a) Regulator valve spring (20, fig. 6-11), gasket

the input shaft (8).

(12) and spool (21). Replace gasket.

Caution: Use care when installing converter

(b) Cooler by-pass valve.

housing on input shaft (8) of disc and drum

assembly, so that misalinement does not occur.

(6) If pressure is under 100 psi, check the

Retaining ring (7) must be firmly seated.

following:

(9) Using suitable hoist, aline converter housing

(a) Low oil level.

screw holes with those in transmission case and slowly

(b) Faulty pump.

lower converter housing and disc and drum assembly on

transmission case.

(d) Faulty regulator valve.

Caution: Use care not to damage retainer

(e) Enlarged clutch cylinder orifices.

sealing rings (14) fitting into disc and drum, as

c. Converter Pressure.

damage to rings will cause reverse piston and disc

(1) Install pressure gage, calibrated to psi, in port

to be inoperative. Avoil any damage to needle

"C" on transmission (fig. 6-8) forward and above flywheel

bearing (42, fig. 6-6) on outside of reverse shaft.

housing inspection cover.

(10) Using new gasket (28, fig. 6-3), install pump

(2) Place transmission in neutral and start engine.

assembly on converter housing (17) by installing collector

ring

(11)

and

securing

ring

with

6-10