GMC T Series 1994 Repair Manual page 639

682A
W A V ED
STACK UP FOR
M EASURING
[ ^ | Measure
Figures 3 7 ,3 8 and 39
1. To measure for proper selective spacer plate,
stack the lo and reverse assembly on a flat
surface in the following order:
A. One waved plate (682B).
B. Five com position and four steel plates
(682), starting with one composition plate
and alternating with steel.
C. Lo and reverse clutch support (679).
2. Apply an evenly distributed load to the top of
the lo and reverse support assembly (679). Light
pressure (approximately 22 N or 5 lbs.) on the
lo and reverse support assembly (679) will
provide the correct dimension for measurement.
NOTICE:
Excessive pressure will start to flatten
th e w ave p late resu ltin g in an in accu rate
measurement.
INSTALL THE APPROPRIATE SELECTIVE
SPACER PLATE TO THE FINAL
ASSEMBLY AFTER DIM ENSION "D"
IS OBTAINED. IDENTIFICATION SIDE UP.
Figure 37 Measuring For Spacer Plate Selection
679 SUPPORT ASM ., LO A N D REVERSE CLUTCH
682A PLATE, LO AND REVERSE CLUTCH (WAVED)
682B PLATE, SPACER LO A N D REVERSE CLUTCH (SELECTIVE)
682C PLATE ASSEMBLY, LO A N D REVERSE CLUTCH (FIBER)
682D PLATE, LO A ND REVERSE CLUTCH (STEEL)
3. Measure the height of the clutch pack from the
work surface to the top of the lo and reverse
clutch support (dimension D).
4. Use dimension D to select the proper thickness
of the selective spacer plate for assembly.
5. Install the proper selective spacer plate between
the wave plate and the first composition clutch
plate with the identification side up.
6. The overall height for dimension D with the
selective spacer plate included should be 29.22
to 29.90 mm (1.20 to 1.24 inch).
LO AND REVERSE CLUTCH
PLATE - WAVED
PLATE - SELECTIVE
PLATE - COMP. FACED
PLATE - FLAT STEEL
679
RH0134-4L60-E
QTY.
THICKNESS
2.42m m
1
(.096")
1
SEE FIG. 39
2.25m m
5
(.088")
1.75m m
5
(.069")
RH0135-4L60-E