Hydraulic Pump Dismantling And Assembly - jcb JS300 Service Manual

Hydraulic Pump Dismantling and Assembly

The working environment must be clean and the
workbench covered with a cloth or rubber sheet to prevent
damage to the components.
The illustration opposite shows both halves of the tandem
double axial piston pump, but the procedures refer mostly
to Pump 1. These procedures should also be applied to
Pump 2 except where indicated otherwise.
Note: The components from one pump section must not
be mixed up with the corresponding components from the
other section and should be returned to the section from
which they came.
The item numbers called up in the following procedures
correspond with those
K Fig 3. ( T
E-60).
Dismantling
Before dismantling, the pump ports should be plugged and
the external surfaces thoroughly cleaned to prevent the
ingress of dirt into the pump mechanism.
1 Remove drain plug 1 and let the oil drain into a
suitable receptacle.
2 As an aid to re-assembly, match mark the mating
flanges of regulator 4 and pump casing 5. Remove
socket head screws 2 and 3 (2 off each) and lift off the
regulator. Put the regulator to one side in readiness
for dismantling if required.
E-64
in the exploded view.
K Dismantling ( T
E-70).
9813/5100-1
Section E - Hydraulics
Hydraulic Pump/Regulator
Hydraulic Pump Dismantling and Assembly
3
4
Fig 6.
3 Remove the four socket head screws 7.
7
8
Fig 7.
2
5
379380-C1
5
379540-C1
E-64