Service Manual and
Axial Piston Pumps Series 20
Repair Instructions
L1003506 • Rev BA • Jun 201424
1. Disassembly the charge pump (see pages 21,
22).
2. The end-cap screws may not be loosened until
the shaft seal has been removed (see page 19).
Remove all but two of the screws which hold
the end cap to the pump casing.
There is an internal spring loading on the end
cap and as the last two screws are loosened
the end cap should separate from the
housing. Loosen these screws alternately until
the loading has been released.
C CAUTION:
Major repairs may affect the unit warranty,
therefore equipment manufacturer should be
consulted prior to undertaking such repairs.
3. The end cap can now be removed from the
pump body. In order to avoid the valve plate
being damaged by dropping down when the
end cover is removed, it must be held firmly as
the cover is removed, as shown in the
illustration. Should the valve plate stick to the
bearing plate, it can then be lifted out
separately.
All surfaces must be treated with the greatest
care. Any damage to the sur faces must be
avoided.
Changing the valve- and bearing plate (disassembly)
F000 096
10 7, 8, 9 Socket insert
F000 097
10
15
F000 098
63
12
17
16
15
10
Disassembly and Assembly
Minor repairs
(continued)
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