jcb JS70, Service Manual

Page: 239 / 385

Offset Boom Ram - Removal
! !
WARNING
Hydraulic Pressure
Hydraulic fluid at system pressure can injure you. Before
disconnecting or connecting hydraulic hoses, stop the
engine and operate the controls to release pressure
trapped in the hoses. Make sure the engine cannot be
started while the hoses are open.
INT-3-1-11/1
! !
WARNING
Lifting Equipment
You can be injured if you use faulty lifting equipment.
Make sure that lifting equipment is in good condition.
Make sure that lifting tackle complies with all local
regulations and is suitable for the job. Make sure that
lifting equipment is strong enough for the job.
INT-1-3-7
1 Park the machine on level ground and, with the dipper
and bucket ram fully retracted, lower the bucket to the
ground.
2 Using a hoist capable of supporting the ram weight of
42 kg (92 lb), attach a sling to the offset ram.
With the engine stopped, the starter switch set to ON
and the operation control switch set to ON, operate the
hydraulic controls to relieve system pressure. Release
hydraulic tank pressure as described in
Section 3.
3 Remove the nuts and bolt securing the offset boom
pivot pin. Extract the pivot pin.
! !
WARNING
Metal Splinters
You can be injured by flying metal splinters when driving
metal pins in or out. Use a soft faced hammer or drift to
remove and fit metal pins. Always wear safety glasses.
INT-3-1-3
75 - 1
Section E Hydraulics
9803/6020
Section E
75 - 1
Issue 1
Hydraulic Rams
284560
284570
284580