Saturn Transmission. Manual - part 13

Figure 107

Figure 108

        NOTE: Prior to using any of the clutch piston 
        installation tool, inspect the tool for any nicks or
        burrs that could damage the clutch piston seals.

FIRST CLUTCH DRUM ASSEMBLY
     

1. Place the 1st clutch piston return spring assembly   

         into the 1st clutch drum. (See note in Figure 109).
         Using Saturn's spring compression tool, 
         SA9146T or equivalent, carefully compress
         the spring. With the spring compressed, use a
         suitable pair of snap ring pliers and install the
         retaining snap ring (See Figure 109).
     2. Install the apply plate into the clutch housing with
         the fiber side facing up. Install all clutch plates
         starting with an internally splined plate first,
         alternate plates with the fiber side facing up (See
         Figure 110). 
         NOTE: All fiber plates should be presoaked for
         ten minutes in Dexron IIE or Dexron  IIIE.

     3. Install the clutch backing plate and selective
         retaining snap ring (See Figure 110).   
     4. The clutch clearance in the 1st clutch drum should
         measure .038" to .055". The clutch pack clearance
         is adjusted with the retaining snap ring. Refer to
         figure 118 on page 58 for the different selective
         sizes and part numbers.
         NOTE: 1991 and early 1992 1st clutch drums
         contained one apply plate which measures
         approximately .130" in thickness. This apply
         plate is externally splined. There is also a total of
         three internally splined and two externally
         splined fiber plates in the drum. Turn to page 56
         for the mid 1992 and up 1st clutch drum
         assembly. 

Figure 109

Figure 110

55

AUTOMATIC TRANSMISSION SERVICE GROUP

Technical Service Information

1st CLUTCH RETURN 

SPRING DIMENSIONS

Wire Diameter

.062"

8

Number of Coils

NOTE

THE NUMBER

"7" STAMPED

IN THE RETAINER

USUALLY 

I.D'S THE 1ST

CLUTCH SPRING

ASSEMBLY

NOTE: THE USE OF

THE 2ND, 3RD OR

4TH SPRING RETAINER

IN PLACE OF THE 1ST

SPRING RETAINER

MAY CAUSE DELAYED
ENGAGEMENT IN "D"

Figure 111

FIRST CLUTCH DRUM ASSEMBLY CONT.
     1. 1992 and later 1st clutch drum assemblies install a
         Belleville spring as shown in Figure 111.
         IMPORTANT: 

When installing the Belleville

         spring, the convex side must be installed towards
         the clutch piston. The concave side should be
         installed towards the clutch pack. Since the
         curvature of the Belleville spring is not that great,
         it may become necessary to determine the convex
         side from the concave side by laying the Belleville
         spring on a flat metal surface. If the surface near 
         the inside is not in contact with the metal surface,
         the convex side is pointed upwards. If the surface
         near the outside diameter is not in contact with the
         flat surface, the convex side is pointed downwards
         and is in contact with the flat metal surface.
     2. Install the Belleville spring into the 1st clutch
         drum with the convex side towards the piston (See
         Figure 111).
     3. Install clutch plates starting with one that is
         internally splined, alternating plates with the fiber
         side up ending with the backing plate and snap
         ring. There is a total of three internally splined
         and three externally splined fiber plates (See
         Figure 111). 
   
SECOND CLUTCH DRUM ASSEMBLY
     1. Place the piston return spring assembly into the
         2nd clutch drum. Using Saturn's spring
         compression tool SA9146T or equivalent, carefully
         compress the spring. With the spring compressed,
         use a suitable pair of snap ring pliers and install the
         retaining snap ring (See Figure 112).
     2. Install the apply plate into the clutch housing with
         the fiber side facing up. Install all clutch plates
         starting with an internally splined plate first,
         alternate plates with the fiber side facing up (See
         Figure 113). There is a total of five internally
         splined and four externally splined fiber plates in
         this pack.
     3. Install the clutch backing plate and selective
         retaining snap ring (See Figure 113).        
     4. The clutch clearance in the 2nd clutch drum should
         measure .060" to .086". The clutch pack clearance
         is adjusted with the retaining snap ring. Refer to
         figure 118 on page 58 for the different selective
         sizes and part numbers.

THIRD CLUTCH DRUM ASSEMBLY
     1. Place the piston return spring assembly into the 
         3rd clutch drum. Using Saturn's spring
         compression tool SA9146T or equivalent, carefully
         compress the spring. With the spring compressed,
         use a suitable pair of snap ring pliers and install the
         retaining snap ring (See Figure 114).

CONVEX

SIDE

CONCAVE

SIDE

Figure 112

Figure 113

2nd, 3rd and 4th CLUTCH RETURN 

SPRING DIMENSIONS

Wire Diameter

.072"

9

Number of Coils

56

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Technical Service Information

Figure 114

Figure 115

     2. Install the apply plate into the clutch housing with
         the fiber side facing up. Install all clutch plates
         starting with an internally splined plate first,
         alternate plates with the fiber side facing up (See
         Figure 115). There is a total of four internally
         splined and three externally splined fiber plates in
         this pack.
     3. Install the clutch backing plate and selective
         retaining snap ring (See Figure 115).            
     4. The clutch clearance in the 3rd clutch drum should
         measure .046" to .061". The clutch pack clearance
         is adjusted with the retaining snap ring. Refer to
         figure 118 on page 58 for the different selective
         sizes and part numbers.

FOURTH CLUTCH DRUM ASSEMBLY
     1. Place the piston return spring assembly into the
         4th clutch drum. Using Saturn's spring
         compression tool SA9146T or equivalent,
         carefully compress the spring. With the spring
         compressed, use a suitable pair of snap ring pliers
         and install the retaining snap ring (See Figure 116).
     2. Install the apply plate into the clutch housing with
         the fiber side facing up. Install all clutch plates
         starting with an internally splined plate first,
         alternate plates with the fiber side facing up (See
         Figure 117). There is a total of three internally
         splined and two externally splined fiber plates in
         this pack.
     3. Install the clutch backing plate and selective
         retaining snap ring (See Figure 117).            
     4. The clutch clearance in the 4th clutch drum should
         measure .036" to .046". The clutch pack clearance
         is adjusted with the retaining snap ring. Refer to
         figure 118 on page 58 for the different selective
         sizes and part numbers.

Figure 116

Figure 117

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AUTOMATIC TRANSMISSION SERVICE GROUP

Technical Service Information

2nd, 3rd and 4th CLUTCH RETURN 

SPRING DIMENSIONS

Wire Diameter

.072"

9

Number of Coils

2nd, 3rd and 4th CLUTCH RETURN 

SPRING DIMENSIONS

Wire Diameter

.072"

9

Number of Coils

SELECTIVE BACKING PLATE SNAP RING IDENTIFICATION

The selective backing plate snap ring is used to adjust all four clutch pack assemblies. Each snap ring below can 
be identified by the different tip or end configuration. If a clutch pack is either to loose or to tight, determine the 
proper thickness snap ring to bring the adjustment within the factory specifications. 

Figure 118

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