jcb JS70, Service Manual

Page: 358 / 385

3 - 1
Removal
1 Slacken the check valve to bleed out grease.
! !
WARNING
When opening the check valve always stand to one side
and loosen a little at a time until grease starts to come
out. If you over-loosen too much grease could spurt out
or the valve cover fly out and cause serious injury.
8-3-4-5
2 Disconnect the track link (see Track Gearbox ,
Removal and Replacement , Section F). Move the
idler wheel and recoil assembly to the end of the
undercarriage using a bar.
! !
WARNING
Stand clear and to one side of the track while you
remove the master pin. When the master pin is removed
the track could fall forward and injure you.
TRACK 1-1
3 Fasten a sling around the idler wheel and recoil
assembly and remove it from the undercarriage.
4 Remove the bolts and remove the idler wheel from the
recoil unit.
! !
WARNING
RECOIL UNITS ARE DANGEROUS. They must not be
dismantled without using suitable tools to compress the
spring safely. The spring pressure can cause serious
injury if suddenly released. Scrap units must be made
harmless by compressing the spring in a hydraulic press
and cutting through the end of the shaft before slowly
releasing the pressure.
TRACK 1-10
Note: See Grease Cylinder , Removal for Recoil Spring
dismantling details.
Section J Track and Running Gear
9803/6020
Section J
3 - 1
Issue 1
Idler Wheel and Recoil Unit