CHAPTER 7. REPAIR OF SUBASSEMBLIES

TM 9-2520-249-34& P

CHAPTER 7

REPAIR OF SUBASSEMBLIES

Section I. CONVERTER PUMP COVER AND LOCKUP CLUTCH ASSEMBLY-REPAIR

c. Remove seal ring (10, FO-3) from lockup

7-1.

Description (FO-3)

clutch piston assembly (11). Lay the sealring flat after

Converter pump cover assembly (5) is a pressed steel

removal so it will not stretch.

assembly with six drive studs at the front to attach it to

d. Remove preformed packing (9) from the

the engine flex-drive plates. The rear ends of these six

hub of pump cover assembly (5). Also remove seal

studs enter blind holes in lockup clutch piston assembly

retainer (8), if loose, or for replacement. Refer to

(11), causing the cover and piston to rotate as a unit. A

figure 7-1.

center hub enters the end of the engine crankshaft for

e. Do not remove bearing (7, FO-3) except for

alinement. Lockup clutch oil pressure, applied between

piston and cover, moves the piston against lockup

replacement. For removal collapse the bushing and lift

clutch disk (13) for clutch application.

Refer to

it out.

paragraph 2-1.

7-3.

Cleaning

7-2.

Disassembly (FO-3)

Refer to paragraph 5-2 for cleaning recommendations.

a. Compress the center part of lockup clutch

7-4.

Inspection and Repair

piston assembly (11) by hand and remove retaining ring

Refer to paragraph 5-3 for inspection and repair

(12) with snapring pliers.

recommendations.

b. Remove lockup clutch piston assembly (11)

7-5.

Repair Standards

from converter pump cover assembly (5). Refer to

a. Refer to paragraph 5-4 for explanation of

figure 7-1.

repair standards.

b. Refer to repair standards (table 7-1).

7-6.

Assembly (FO -3)

a. If bearing (7) was removed from converter

pump cover assembly (5), press in a new bearing.

Using handle (12, table 3-1)and driver (9, table 3-1),

install the bearing 1.00 to 1.04 inches below the outer

bolt ring surface inside of the cover assembly (fig. 7-2).

Figure 7-1. Removing (or installing lockup clutch piston

assembly.

7-1