Opel 1900 1973, Service Manual

Page: 581 / 625

1973 OPEL SERVICE MANUAL
RUBBER
MALLET
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Figure Separating Cylinder Halves
parts tray (J-9402) the following: number “1, 2 and
3” pistons, piston drive balls, and (if service pistons)
piston rings. To disassemble rotate plate until
piston is at highest point, raise plate approxi-
mately inch and lift out piston and related parts
one at a time. Discard shoe discs and rear needle
thrust bearing and races.
Figure Disassembly of Cylinder Assembly
Service Pistons Shown
Examine piston drive balls and replace if necessary.
The front end of the piston may be identified by a
recessed notch (see Figure
5. Lift out shaft and plate assembly and front
needle thrust bearing races. Discard front needle
thrust bearing and races.
Figure Piston Identification
Examine shaft and plate assembly and replace
as necessary.
6. Wash all salvaged parts of cylinder assembly in
bath of trichlorethylene, alcohol, or similar solvent
and dry parts with filtered, dry compressed air.
Examine front and rear cylinder halves, front and
rear main shaft bearings, and replace as necessary. If
bearings are to be replaced, drive out of cylinder
halves with suitable socket or punch. Install new
bearing (lettering on bearing edge facing outward)
using bearing installer (J-9432). See Figure
Figure Installing Main Shaft Bearing
Partial Reassembly of Cylinder Assembly, and
Gaging of Piston Play and Shaft End Play
1. Obtain from parts stock four “zero” thrust races,
two needle thrust bearings, and three shoe
discs.
2. Place front cylinder on top ofcompressing fixture
(J-9397) as shown in Figure