Regulator Dismantling And Assembly - jcb JS300 Service Manual

The working environment must be clean and the
workbench covered with a cloth or rubber sheet to prevent
damage to the components.
The item numbers called up in the following procedures
correspond with those
K Fig 29. ( T
E-73).
Dismantling
Before dismantling, remove dust, rust, etc. using clean
hydraulic oil.
Retain all washers, snap rings etc. for later re-use. O-rings
should be renewed.
1 If not already done, separate the regulator 1 from the
pump casing by removing socket head screws 2 and
3 (2 off each). Do not lose the large O-ring 4.
3
Fig 20.
2 Remove the four socket head screws 5 and lift off
cover 6 complete with adjusters 7/8, adjusting screw
9, two locking nuts 10, mounting nut 11 and adjusting
E-70

Regulator Dismantling and Assembly

in the exploded view.
2
1
379380-C2
9813/5100-1
Section E - Hydraulics
Hydraulic Pump/Regulator
Regulator Dismantling and Assembly
ring 12. Do not interfere with the settings of any of
these components as this could alter the pre-set flow
settings.
6
Fig 21.
3 From regulator body 1, withdraw outer spring 13,
inner spring 14 and spring seat 15. Also withdraw
adjusting ring 16 (refer to Note 1), pilot spring 17 and
spring seat 18.
Note: 1 Use an M4 screw Z attached to the end of
adjusting ring 16 to facilitate its easy removal.
1
Fig 22.
5
379390-C1
13
14
15
16
17
18 Z
379400-C1
E-70