Opel 1900 1973, Service Manual

Page: 485 / 625

1973 OPEL SERVICE MANUAL
14. Remove the downshift timing valve plug retain-
ing pin and remove downshift timing valve plug.
Remove the low speed downshift timing valve and
spring.
15. Remove the manual low and control
valve retaining pin. Remove the spring and the
manual low control valve and the reverse control
valve.
16. Remove the l-2 accumulator valve retaining pin
and remove the l-2 accumulator valve plug, l-2 ac-
cumulator valve and spring.
17. A clean work area which is free of dirt and dust
should be used to inspect, clean and install the valves
in the valve body. Handle valve components with
clean hands and tools. Since most valve failures are
caused initially by dirt or other foreign matter pre-
venting a valve from functioning properly, a
thorough cleaning of all the components with a
cleaning solvent is essential. Do not use paraffin to
clean out the valve body passages and valve bore.
Compressed air may be used to blow out the pas-
sages.
18. Inspect each valve for free movement in its re-
spective bore in valve body. If necessary, use
crocus cloth to remove small burrs on a valve. Do
not remove the sharp edges of the valves as these
edges perform a cleaning action within the bore.
19. Inspect the valve springs for distortion or col-
lapsed coils. Replace the entire valve body assembly
if any parts are damaged.
20. Inspect the transfer plate for dents or distortion.
Replace transfer plate if necessary.
21. Reassemble the valves, springs, plugs and retain-
ing pins in their proper location and order into the
valve body using a liberal amount of transmission
fluid. See the spring data chart which includes the
spring identification sizes in the event springs have
been disarranged.
Location
Application
Pump Pressure Regulator Valve ....................................................
Pump Priming Valve ........................................................... . ............
Valve Body 1.2 Shift Valve ......................................................................
Valve Body 2-3 Shift Valve ......................................................................
Valve Body Detent Pressure Regulator Valve ......................................
Valve Body
High-Speed Timing Valve ....................................................
Valve Body
Low-Speed Timing Valve ....................................................
Valve Body
Reverse and Low Control Valve ........................................
Detent Valve ..........................................................................
Valve Body 1-2 Accumulator Valve ........................................................
Valve Body
3 - 2 Control Valve ..................................................................
Gov. Body
Secondary Governor Valve ................................................
Valve Body
Accumulator Piston ..............................................................
Case
Servo Return ..........................................................................
Servo Cushion ........................................................................
Clutch Pack Clutch Return (All) ................................................................
SPRING IDENTIFICATION CHART
Outer
Height Diameter
2 . 7 5 6
1 . 0 4 3
2 . 4 6 7
1 . 7 6 9
1 . 6 2 5
, 4 7 4
1 . 3 4 9
1 . 3 8 0 , 4 0 6
1 . 3 4 3
2 . 5 6 9
1 . 0 7 2
1 . 8 5 3
1 . 3 1 7
1 . 9 1 7
1 . 2 2 4
2 . 2 4 0
1 . 8 5 0
1 . 0 3 9
1 . 2 6 7
1 . 0 5 0
22. Install spring and accumulator piston in valve
body.
23. Compress accumulator piston with C-clamp and
install retaining ring.
24. Install new valve body gasket.
2. Inspect and clean oil passages with cleaning
vent and air.
3. Check for good retention of band anchor pins.
25. Bolt the transfer plate and gasket to the valve
body. Torque to 6-8 lbs. ft.
Disassembly, Inspection and Reassembly of Case
1. Inspect case for damage. See Figure
4. Inspect all threaded holes for thread damage.
5. Inspect detent valve and modulator valve bores for
scratches or scoring.
6. Inspect case bushing inside of case at rear. If
remove bushing with remover and installer
tool J-23 130-3 and driver handle J-8092. See Figure