Gradall LOED 534A, Service Manual

Page: 48 / 91

If Parts 1, 2, 3, and 4 are re-
placed, examine the new parts and
remove any nicks or burrs. flash in
clean solvent. Make sure that an
identifying mark is put on each new
part and on the same side as it was
on the old part. Refer to Step 2.
This should be done before any parts
are assembled.
Place the body (2) with its solid
flat end down and the mark mace in
Step 2 facing you.
Coat the inside of the body and
bearings with clean hydraulic oil.
This will insure easier assembly.
Out of the group of parts from this
pumping section, examine the two
isolation plates 10 and 11. You
will find that plate 11 has rounded
edges. Install this plate on the
suction side of the body with the
rounded edges down. (Figure 53)
Assembly
Install back-up ring (14), o-ring
(12), and retainer ring (13).
(Figure 54)
Pick up a pressure plate, part 9.
Use the thumb and forefinger in the
hole. Keep the bronze side of the
plate facing up and the rounded
trap slots facing the discharge
side of the pump. Holding the
plate as level as possible, slide
it into place in the bottom of the
body. Do not force the plate into
place. If it binds on the way down
work it back and forth carefully
until it slides into position.
(Figure 55)
20.
22.
23.
21.
25.
24.
49
FIGURE 53
FIGURE 54
FIGURE 55