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REAR S U S P E N S I O N
3 D - 3 1
Fig. 3D-4 1 Removing Check Valve
1. Inspect housing for cracks or damage and replace if
necessary.
2. Inspect piston bore. Replace housing if scored.
3. Inspect check valve seat. Seat should be smooth and
clean.
4. Inspect distributor valve parts for wear and replace
if necessary.
5. Inspect distributor valve seat on housing for wear.
Replace housing if necessary.
S E C O N D S T A G E H O U S I N G
I. Inspect piston bore; replace housing if scored.
2. Inspect housing for cracks or damage and replace if
necessary.
SECOND STAGE HOUSING
A s s e r n b l e
1. Install new '?0" ring in a casting cavity.
2. Smear a light coating of "0" ring lube on the second
"step" of the check valve capsule and carefully start it into
the casting cavity.
3. Use a arbor press or drill press to apply a siight
pressure of the check valve capsule against the "0" ring so
that the top surface of the capsule is slightly below the top
edge of the casting cavity (Fig. 3D-42).
4. With capsule positioned as shown in Fig. 3D-42, stake
capsule into position. Stake capsule in four places 90" apart
using the side of a screwdriver blade and a hammer to place
stake marks on casting.
Fig. 3D-42 Positioning Check Valve
FIRST STAGE HOUSING AND VALVE
MECHANISM
A s s e r n bly
1. If removed, position bushings in first stage housing
and install rocker arm and swivel arm. Align holes in rocker
and swivel arms and install retaining pin, small end first.
C A UTI
0
N :
I f distributor mechanism failed to
operate properly or one or more parts were found
defective, use new parts in Distributor Valve and
Arm Package during remaining reassembly.
2. Install washer on intake valve and install in first stage
housing with intake valve retaining spring.
3. Install longer foot of valve tension spring in boss on
first stage housing, being careful not to distort spring (Fig.
3D-39).
4. Position distributor valve so that short foot of tension
spring fits under valve and vertical leg is in slot (Fig. 3D-43).
5. Install distributor valve bushing, washer, distributor
arm assembly, washer and secure with screw (Fig. 3D-44).
Tighten screw to 12 Ib. in. torque.
6. Install two distributor valve stop bushings and two
arm assembly stop bushings.
NOTE: Do not install actuating arm, arm tension spring
or arm pivot screw at this time as rocker arm must be
free to permit entrance of piston into first stage housing.
PISTON--DIAPHRAGM ASSEMBLY
A s s e m b l e
1. Install new corprene washer, old plate (unless
damaged), new diaphragm (with outer lip toward second
stage end of piston) and second plate.
2. Using a 13/16" deep socket as a retainer installer,
press against the piston shoulder on the first stage housing
side with wood blocks to seat retainer. The wood blocks used
in the illustration are each 3/4"
x
3/4"
x
12" (Fig. 3D-45).
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