Section II. TORQUE CONVERTER ELEMENTS-REPAIR

TM 9-2520-249-34& P

Refer to figure 7-1.

c. Install preformed packing (9, FO-3) over

the hub of pump cover assembly (5) into seal retainer

(8). Refer to figure 7-1.

d. Install sealring (10, FO-3) into the outer

diameter groove in lockup clutch piston (11). Refer to

figure 7-1.

e. Install lockup clutch piston assembly (11,

FO-3), with sealring (9) in place, into converter pump

cover assembly (5). Refer to figure 7-1.

CAUTION

Triangular balance marks (if present) on

piston and cover must be alined to the nearest

stud and hole engagement of cover and

piston. Piston must engage cover studs.

Failure to engage the studs will prevent

lockup clutch release. Recheck to see that

0.094 hole in one of the six piston recesses is

Figure 7-2. Installing bearing into hub of converter

open.

assembly

Carefully compress the center of lockup

clutch piston (11), FO-3) and install retaining ring (12)

b. If seal retainer (8, FO-3) was removed,

into the groove in the hub of converter pump cover

install the retainer, small diameter end first, onto the hub

assembly (5).

of converter pump cover assembly (5).

Table 7 -1 Repair Standards (Converter Pump Cover, Lockup Clutch

Wear limit

Reference

Size and fit

DS/GS

Foldout

Item

Point of measurement

of new parts

maintenance

Inside diameter of cover at sealring............. 12.996 to 13.006

13.010

Inside diameter of bearing.....................

0.999 to 1.002

1.004

39a

Outside diameter at bearing surface of shaft

0.9975 to 0.9985

0.9965

7a,

Fit of shaft in cover bearing....................

0.0005L to 0.0045L

39a

11a

Thickness of piston...............................

0.301 to 0.305

0.300

No scoring permissible

13a

Thickness of disk .................................

0.180 to 0.190

0.170

15a

Thickness of plate ............................ ...

1.235 to 1.245

1.225

............................................................

No scoring permissible

Section II. TORQUE CONVERTER ELEMENTS-REPAIR

the input member of the converter. It transmits drive

7-7.

Description

from the engine to pump assembly (93), and encloses

(FO-3)

all other components. Refer to paragraph 2-1.

The

torque converter consists mainly of pump

7-8.

Disassembly

assembly (93), stator assembly (19) and turbine

assembly (17). Pump assembly (93) is driven by the

a. Pump Assembly (FO-3).

No further

engine. Stator assembly (19) is mounted on a freewheel

disassembly of the torque converter pump is necessary.

clutch arrangement which holds the stator stationary

Since the pump was balanced during manufacture, do

when torque multiplication is required.

Turbine

not remove any screws (94) or balance weights (96)

assembly (17) is the output member of the converter. It

from the pump. Remove

is connected to output shaft (39). Converter pump

cover assembly (5) is

7-2