jcb JS300 Service Manual page 735

Assembly
Before assembling:
– Thoroughly clean all components with clean hydraulic
oil and dry with compressed air.
– Apply clean hydraulic oil to all sliding surfaces,
bearings, etc.
– Renew any damaged components.
– Renew all O-rings and other seals.
The item numbers called up in the following procedures
correspond with those
K Fig 29. ( T
E-73).
1 Insert compensating rod 42 into hole B of regulator
body 1.
2 Locate pin 37A in lever 36 in the groove of
compensating rod 42. Locate lever 36 on pin 37 in
regulator body 1.
3 Fit spool 39 and sleeve 26 into hole A of regulator
body 1. Check that the spool and the sleeve slide
smoothly in the body without binding. Check the
orientation of the spool with respect to feedback lever
K Fig 30. ( T
35. E-74).
39
Fig 30.
4 Install feedback lever 35, orientating it as shown
below and aligning its pin hole with that of spool 39.
Insert pin 34.
E-74
in the exploded view
35
379470-C1
9813/5100-1
Section E - Hydraulics
Hydraulic Pump/Regulator
Regulator Dismantling and Assembly
36
35
Fig 31.
5 Insert pilot piston 38 into hole C of regulator body 1.
Check that the piston slides freely without binding.
6 Locate pin 33A in lever 32 in the groove of pilot piston
38. Position lever 32 in regulator body 1.
7 Fit fulcrum plug 29 so that integral pin 33 locates with
lever 32. Fit a new seal 28A and install snap ring 28.
1
Fig 32.
32
379480-C1
29
379490-C1
E-74