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Dismantling
Refer to the sectional drawings of the pump on page
24
- 8
as a guide to dismantling and assembly. The
numbers in the text in bold type (e.g.
10
) refer to the
annotations on the drawings.
Before dismantling the hydraulic pump, blank off all inlet
and outlet ports, wash the outer surfaces with a suitable
solvent to remove all dirt and oil, and then dry using
compressed air.
Inscribe alignment marks across mating sub-assembly
joint faces as an aid to re-assembly.
Do not tamper with any adjustment settings.
1
Remove the two Hex socket head bolts
48
and remove
the gear pump.
2
Remove the two socket head bolts
105
which secure
servo pump assembly
50
to piston pump
5
. Remove the
servo pump assembly. Dismantling of the servo pump is
described from step
28
onwards of this section.
3
Remove the five socket head bolts
47
. Remove end
cover
40
, taking care to keep it in line with pump shaft
1
(see Note) and control plate
43
.
Note:
Spring
28
exerts pressure on end cover
40
and could
cause it to twist and damage pump shaft
1
.
24 - 2
Section E
Hydraulics
9803/6020
Section E
24 - 2
Issue 1
Hydraulic Pump
Summary of Contents for JS70
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Page 189: ...Section E Section E Hydraulics 9803 6020 Issue 1 33 4 33 4 Control Valves Control Valve 291360...