Copyright © 1996 General Motors Corp. 6–1
6–1. SCOPE
This section contains the rebuild procedures for the
subassemblies which were removed in Section 5.
6–2. GENERAL INFORMATION FOR
SUBASSEMBLY REBUILD
Refer to Sections 4 and 8 for general overhaul infor-
mation as follows:
6–3. INSPECTING AND TESTING
TORQUE CONVERTER
NOTE:
Because the torque converter assembly for models
other than the AT 543 is closed and welded after as-
sembly of the internal parts, no repairs can be
made. The assembly can be tested, however, to de-
termine its condition in two areas. End play of the
internal elements can be measured, and the outer
shell can be tested for leaks.
a. Preliminary Inspection.
Clear the torque
converter of transmission fluid. Examine the fluid for
evidence of foreign matter or metal particles, indicat-
ing transmission or converter internal damage.
b. End Play Check
(1) To check for end play, support the con-
verter assembly on the converter cover (pump hub up-
ward). Place converter end play gauge J 24602 into the
converter pump hub (Figure 6–1).
(2) Retain the body of the gauge in the pump
hub with one hand while rotating the center screw with
the other hand, locking the gauge to the turbine hub.
Do not overtighten.
(3) Assemble J 5959-1, J 5959-3, J 5959-7,
J 7872-2, and J 7872-3 as shown in Figure 6–1. Install
the above items onto the converter pump hub as
shown.
(4) Adjust lug attachment J 5959-7 so the
dial will make firm contact with the top of end play
gauge J 24602.
(5) Set the dial to read zero and lift J 24602
as far as possible.
Figure 6–1. Checking End Play of
Torque Converter Element
Paragraph Description
4–2 Tools and Equipment
4–3 Replacement Parts
4–4 Careful Handling
4–5 Cleaning and Inspection
4–6 Assembly Procedures
4–10 Torque Specifications
8–1 Wear Limits Data
8–2 Spring Data
CAUTION:
Allison Transmission Division GM recommends
only genuine Allison torque converters for use
with any AT 500, 1500 Series Allison transmis-
sions. Any transmission damage that may occur
as a result of using a converter other than a new
Allison converter or a genuine Allison replace-
ment is the responsibility of the owner and will
not be covered by Allison warranty.
H02912
J 5959-1
J 24602
TORQUE
CONVERTER
J 5959-3
J 5959-7
J 7872-3
J 7872-2
Section 6 – REBUILD OF SUBASSEMBLIES
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