![background image](http://html1.mh-extra.com/html/jcb/js70/js70_service-manual_3631821315.webp)
Dismantling (cont’d)
33
Extract spool
156
, taking care not to damage the sliding
surfaces.
Note:
If inspection reveals that either the spool
156
or the
valve body
155
need replacing, both should be renewed as a
matching pair.
34
Remove the ‘O’ ring
136
from plug
160.
Remove the ‘O’ ring from the groove on the rear flange
101
.
Note:
Steps 35 and 36 should only be carried out if pilot
valve
163
needs renewing. Otherwise do not disturb.
35
Using a sharp pointed centre punch, locate the punch in
the notch on ring
165
and hit with a hammer to remove
it. Renovate the retaining groove which will have been
damaged during ring removal.
36
Turn rear flange
101
over and remove stopper
164
,
spring
166
and valve
163
. If necessary, connect a
hydraulic hand pump (see Service Tools, Section 1) to
the servo port A and use the pump to force out the
stopper.
!
CAUTION
When using compressed air, wear safety glasses and
gloves. Do not direct compressed air at your skin.
8-3-4-2
Note
: Do not remove either of plugs
152
unless a defect is
suspected.
8 - 9
Section F
Transmission
9803/6020
Section F
8 - 9
Issue 1
Track Gearbox
Summary of Contents for JS70
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