Saturn Transmission. Manual - part 19

 

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Saturn Transmission. Manual - part 19

 

 

Figure 178

Eliminated in

2nd Design

Valve Body

79

AUTOMATIC TRANSMISSION SERVICE GROUP

Technical Service Information

Figure 179

Cut or Notch in the 

Corner of the Gasket

used for Identification

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AUTOMATIC TRANSMISSION SERVICE GROUP

Technical Service Information

VALVE BODY ASSEMBLY 

        

     1. Clean the valve body assembly in clean solvent
         thoroughly.
     2. Move the valves with a pick or a small 
         screwdriver to ensure that any debris or dirt is
         dislodged.
     3. Dry with compressed air.
     4. Position valve body on a clean and dry flat work
         surface for disassembly.
     5. Remove valve trains one at a time and begin in
         one corner of the valve body.
     6. Some valves are under spring pressure so cover
         the end of the bore when removing the retainers.
     7. Valves, springs, and bushings should be laid out
         on a clean dry surface EXACTLY the way they are
         removed.
     8. Clean all valves, springs and bushings, then dry
         with compressed air.
     9. Inspect all valve body parts for wear and/or
         damage.  
   10. Use the illustrations in Figures 175 and 176 to
         reassemble the valves, springs and bushings in
         their proper order.
   11. Use the illustrations in Figures 177 and 178 to 
         place the check balls and retainers in their proper 
         location. 
         NOTE: Replace the thimble filter seal as shown in
         Figure 177.
   12. Check connector plate terminals with the shank of
         a #43 (2.25mm or 0.089 in.) drill bit. Be sure that
         there are no burs on the drill bit shank. There
         should be a slight drag on the shank. If not,
         replace the connector plate (See Figure 180).
   13. Before installing the actuators into the upper valve
         body, carefully inspect for heavy metal build up in
         the corners as shown in Figure 181.
         IMPORTANT: Some transaxles may have been
         manufactured with iron sediments that migrates 
         to the control body assembly causing deposit
         buildup on the upper valve body as shown in
         Figure 181. This also may cause the actuator
         valves and or valve body valve to seize or become
         sticky. Careful inspection of the actuators and
         valves must be taken.
   14. Inspect thoroughly the actuators for metal deposits
         in the locations shown in Figure 182 and replace if 
         necessary.
         NOTE: 1991 and 1992 actuators are not
         interchangeable with 1993 and up actuators. 1993
         and up actuators can be quickly identified by their
         red colored top.

Figure 180

Figure 182

Heavy Buildup of Fine

Black Material in Corners

Figure 181

Check for Iron

Sediments Here

Check for Iron

Sediments Here

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Technical Service Information

   15. Some early 1991 style actuators are known to 
         develop craks and chips in the ceramic seat as 
         shown in Figure 183. Inspect carefully and replace
         if necessary.
   16. Install new O rings onto each of the actuators and
         lubricate well.
   17. Install the actuators into the upper valve body
         with a slight twisting motion (See Figure 184).
   18. Align the actuator pins to the connector plate  and
         install the connector plate (See Figure 184).
   19. Place the actuator cover on top of the connector
         plate (See Figure 184).
   20. Install new and correct spacer plate gaskets (See
         Figure 179) onto the spacer plate.
   21. Before the valve body halves can be assembled,
         carefully select the proper length bolts using
         Figure 185 and the chart below.

   

   22. Assemble the upper valve body assembly to the 
         lower valve body assembly being careful not to
         misposition the check balls or spacer plate gaskets
         (See Figure 184).
   23. Install finger tight the one holding bolt as shown
         in Figure 186.
   24. Install the two aligning dowell bolts and the 
         remaining 11 connector plate cover to valve body
         retaining bolts as shown in Figure 187. Finger
         tighten only.

Ceramic Seat
White/Yellow

in Color

Chip

Figure 183

Figure 184

Figure 185

NOTE: BOLT NUMBERS ARE NOT ON THE BOLT

5
1
3
13
3

BOLT NO.       LENGTH (mm)       QUANTITY

1                     50.0                            
2                 57.0 DWL                     
3                 83.0 DWL                      
4                     75.0                           
5                     65.0        

82

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Technical Service Information

 

 

 

 

 

 

 

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