Service Manual

Cylinder Block Kit Components
If the pump block spring retaining ring requires replace-
ment, remove
it from the pump shaft.
Remove the displacement control shaft
seal out of the
housing. Care must be taken
so as not to damage the
housing bore.
Reconditioning and Replacement of Parts
After disassembly, all parts should be thoroughly cleaned
in a suitable solvent. Replace all O-rings, gaskets and
shaft seals.
Inspect all parts for damage, nicks or unusual wear
patterns. Replace all parts having unusual or excessive
wear or discoloration.
Inspect the
seal surfaces, bearing surfaces and shaft
splines. Polish the sealing areas on the shafts if neces-
sary. Replace any worn or damaged parts.
The pump shaft bushing
is pressed into the end cap and
should not be removed.
The running surfaces of the cylinder blocks
MUST be flat
and free from scratches.
If scratches or wear are found
on the running surface of the cylinder block or end
cap,
polish or replace the parts. When polishing these sur-
faces, up to
0.0004 in. may be removed. If this is not
sufficient to obtain a flat surface, free of scratches, the
part should be replaced.
I J
Install Displacement Control Shaft
Assembly Procedures for Variable Pump
Clean and lightly oil parts prior to assembly of the variable
pump. Be sure to toque all threaded parts to recom-
mended torque levels.
Install the displacement control shaft into the housing.
Page 12
BDP Service Manual