16-21. PISTON PUMP - REPAIR (Contd)
The rotating group (18) consists of
components (11, 14, 16, 17, 19-25).
Hold shoe plate (19) with both
hands to prevent rotating group
parts from separating during
removal, then remove rotating
group parts (18) from pump
Remove pin retainer (24) from
cylinder block (17).
Remove piston (7) from housing
DISASSEMBLE CYLINDER BLOCK ASSEMBLY.
Spring (20) located in the cylinder
block (17) is under high
tension and can cause severe personal
injury if retaining ring (21) is not
Place flat washers (A), as
required, under head of capscrew
(B). Slide capscrew (B) through
retaining ring (21) and spring
(20) until threaded end of
capscrew is visible through hole
on other side of cylinder block
Place additional flat washers
(A), as required, and nut (C) on
threaded end of capscrew (B).
Carefully tighten nut (C) and
capscrew (B) until spring tension
is removed from retaining ring
Use care when handling close tolerance
parts that are removed in steps d and
e, to prevent burrs from forming.