Pontiac Fiero 1988 Service Manual page 815

125C-28
AUTOMATIC
TRANSAXLE
632 R I N G , SNAP- S P R I N G R E T A I N E R
Figure 6 7 Forward Clutch D i s a s s e m b l y
APPLY SIDE
T
A PISTON
B
INNER S E A L
C OUTER S E A L
H 125C-82-1
Figure 6 8 Typical Apply Piston
Do not cut the seals on the snap ring groove.
4. Spring guide (630)
5. Spring and retainer assembly (631)
Snap ring (632) - Use arbor press or J-23456 and
J-25018-A.
Steel waved plate (625).
Lubricate composition plates (633).
9. Alternate composition and steel plates (633).
10. Steel waved plate (625).
11. Backing plate (634) I.D. side up.
12. Snap ring (632).
13. New seal rings (622) if required.
pf|p
Measure
• Snap ring (635) to backing plate (634) - end
play range with a feeler gage must be 1.0-1.5
mm (.040"-.060"). For correct backing
plate selection see Figure 69.
DIRECT CLUTCH ASSEMBLY
1.
2.
3.
4.
Disassemble (Figure 71)
Snap ring (620)
Backing plate (619)
Composition and steel clutch plates (618)
Snap ring (617)
635
634
624
A INPUT S H A F T
1 FEELER G A G E 1.0-1.5mm {.04"-.06")
6 2 4 HOUSING ASSEMBLY, FORWARD C L U T C H
6 3 4 PLATE, FORWARD C L . BACKING (SELECTIVE)
6 3 5 RING, SNAP
BACKING PLATE THICKNESS IDENTIFICATION CODE
Inches
Powdered
MM
Inches
Steel
Metal
5.0 - 4.9 .197 - .191
A 6
4.5 - 4.3 .175 - .170
B 7
3.9 - 3.8
.154 - .148 C 8
3.3 - 3.2
.132 - .126 D
9
H 1 2 5 C - 4 9 - 5
Figure 69 Forward Clutch Backing Plate Selection
1 2 5 C C L U T C H P L A T E A N D A P P L Y RING
U S A G E C H A R T
C L U T C H
FLAT
STEEL
PLATE
COUP.
FACED
PLATE
WAVED
PLATE
APPLY
RING
DIRECT
CJC,CPC,CTC,
CUCCXCHLC,
HRCPMCPPC
No?
Thick-
ness
No. No.
Thick-
ness
I.D.
Thick-
ness
DIRECT
CJC,CPC,CTC,
CUCCXCHLC,
HRCPMCPPC
5
2.3mm
(0.09")
5
-
—
7
19.0mm
(0.75")
J F C J K C R A C 3
2.3mm
(0.09")
3 2
27.4mm
(1.08")
ALL OTHERS 4
2.3mm
(0.09")
4
-
—
1
23.1mm
(0.91")
FORWARD
ALL
3
1.9mm
(0.07")
4
2
1.25mm
(0.05")
_
LO & REVERSE
ALL
4
2.2mm
(0.09")
5 2
1.94mm
(0.08")
-
The direct and forward clutch flat steel clutch plates and the forward clutch
waved steel plate should be identified by their thickness.
The direct and forward production installed composition-faced clutch plates
must not be interchanged. For service, direct and forward clutch use the same
compositioned-faced plates.
The forward clutch backing plate is selective. Refer to the Forward Clutch
End Play Chart.
Measure the width of the clutch apply ring for positive identification.
H 125C-46-11
Figure 7 0 Clutch Plate U s a g e Chart