GMC T Series 1994 Repair Manual page 747

7 CASE ASSEMBLY, COMPLETE
671 SHAFT & BUSHING ASSEMBLY, OUTPUT RH 0m -4L80-E
Figure 89 Rear Unit End Play Check
THICKNESS IDENTIFICATION NOTCH
(INCH) AND/OR NUMERAL
.074 - .078 NONE
.082 - .086 ON SIDE OF 1 TAB
.090 - .094 ON SIDE OF 2 TABS
.098- .102 ON END OF 1 TAB
.106- .110 ON END OF 2 TABS
.114- .118 ON END OF 3 TABS
Figure 90 Output/Case Selective Thrust Washer (674)
INTERMEDIATE CLUTCH
ASSEMBLY/DIRECT CLUTCH ASSEMBLY
Figures 91 through 93
Tool Required:
J 24396 Intermediate Clutch Pack Alignment
Tool
J 38733 Direct Clutch Assembly Remover
and Installer
| % | Assemble
h h
NOTICE:
Dip all clutch plates in DEXRON®-IIE
transmission fluid.
1. Steel plates (632) and composition plates (631)
alternately, starting with a steel plate.
2. Intermediate clutch backing plate (630). Flat side
down.
3. Snap ring (629), medium size, at the 9 o'clock
position.
4. End play check for intermediate clutch piston
travel. 1.02 to 2.72 mm (0.040 to 0.107 inch).
Using feeler gage between backing plate and snap
ring.
5. Front band (628).
• Check for proper position and freedom of
movement.
6. Align clutch plates (631 and 632) with J 24396.
Leave tool in place.
7. Apply air through center support bolt hole to
engage intermediate clutch.
8. Remove tool J 24396.
9. Continue applying air to hold clutch plates in
place.
10. Direct clutch assembly into case with J 38733.
M O DELS
ALL MODELS
1
2
3
4
Figure 91 Intermediate Clutch Plate Chart
5
FORWARD CLUTCH ASSEMBLY
6
p > | Install or Connect
RH0115-4L80-E
Figure 94
• Forw ard
J 38358-A.
NOTICE:
sensor ring to the pum p gasket surface is
approximately 98-99 mm or 3.85-3.89 inches.
4TH CLUTCH ASSEMBLY
| T |
Important
Figure 97
• Remove snap ring (523), 4th clutch backing plate
(524), 4th plate clutch assemblies (525) and 4th
clutch plates (526) from 4th clutch housing
assembly (529) to ease assembly of overrun
clutch housing assembly (504).
p j Install or Connect
Figure 95
1. 4th clutch assembly (529) into case (7).
2. New 4th clutch bolt (26) through case fluid
passages into 4th clutch housing (529) and rotate
transmission to horizontal position.
| ^ |
•
f f ] Important
• DO NOT OVERTORQUE!
HYDRA-MATIC 4L80-E
CLUTCH PLATE APPLICATION CHART
INTERMEDIATE CLUTCH
NO. OF NO. OF NO. OF
FLAT STEEL COMPOSITION
DISHED
PLATES PLATES PLATES
1.97MM
THICKNESS
(.077")
4
clutch assem bly
When installed correctly the top of speed
Tighten
Bolt (26) to 15-17 N*m (11-13 lb. ft.).
PISTON
TRAVEL
CHECK
1.02-2.72MM
(0.040-0.107")
4
RH0180-4L80-E
(602) using