Allison Transmission AT 1545P Service Manual

6–38 Copyright © 1996 General Motors Corp.
AT 500, 1500 SERIES AUTOMATIC TRANSMISSIONS
(2) Apply the specified load, and measure
Dimension X.
(3) From the table in Figure 6–64, select the
fourth clutch piston. Use the parts measured, and the
selected piston, in the fourth clutch assembly (Para-
graph 6–12c).
d. Third Clutch. Refer to Paragraph 7–7a for
clutch clearance.
e. Second Clutch
(1) Stack the second clutch plates and piston
as shown in Figure 6–66.
(2) Apply the specified load, and measure
Dimension X.
NOTE:
Replace used plates, within specifications, as needed
with new to produce Dimension X. Second clutch
does not have selective backplates.
Figure 6–64. Determining Fourth Clutch
Piston Thickness
Figure 6–65. Fourth Clutch Housing Identification
Figure 6–66. Checking Second Clutch Plate
Running Clearance
Figure 6–67. Determining First Clutch
Backplate Thickness
;
;
;
;
;
;
;
;;
;;
;;
;;
;;
;;
;;
PRESS 980–1020 LBS
(4359–4537 N)
STEEL PLATE
WITH LATER
CLUTCH HOUSING
(WITH IDENTIFICATION
GROOVE IN HOUSING)
(REF. FIGURE 6–65)
USE PISTON
WITH EARLIER
CLUTCH HOUSING
(WITHOUT IDENTIFICATION
GROOVE IN HOUSING)
(REF. FIGURE 6–65)
USE PISTON
DIMENSION X
EF
E
DE
C
B
A
0.9825–1.0065 in.
(24.956–25.565 mm)
1.0065–1.0325 in.
(25.565–26.226 mm)
1.0325–1.0585 in.
(26.226–26.886 mm)
X
FOURTH CLUTCH
BACKPLATE
EXTERNAL-
TANGED
CLUTCH
PLATE
INTERNAL-SPLINED
CLUTCH PLATE
BENCH
V02970
GROOVE
V01306
LATER HOUSINGEARLIER HOUSING
1.919 in.
(48.74 mm)
1.909 in.
(48.49 mm)
1.870 in.
(47.49 mm)
1.860 in.
(47.25 mm)
NO
GROOVE
V02971
X
1.9325–1.9685 in.
(49.085–50.000 mm)
SECOND-CLUTCH
PISTON
STEEL PLATE
PRESS 980–1020 LBS
(4359–4537 N)
STEEL PLATE
SECOND-CLUTCH
BACKPLATE
INTERNAL-SPLINED
PLATES (3)
EXTERNAL-
TANGED
PLATES (3)
;
;
X
DIMENSION X
2.2875–2.3235 in.
(58.103–59.016 mm)
2.3236–2.3595 in.
(59.017–59.931 mm)
2.3596–2.3955 in.
(59.932–60.846 mm)
LATER MODELS
USE BACKPLATE
4
5 (or no mark)
6
EARLIER MODELS
USE BACKPLATE
1
2
3
PRESS 980–1020 LBS
(4359–4537 N)
STEEL PLATE
FIRST AND
REVERSE
CLUTCH
PISTON
EXTERNAL-
TANGED
CLUTCH
PLATE (7)
INTERNAL-SPLINED
CLUTCH PLATE (7)
PLATE
BENCH
V02972

Allison Transmission AT 1545P Specifications

General

Brand	Allison Transmission
Model	AT 1545P
Category	Microphone system
Language	English