Section B - Body & Framework
B-9 B-9
9803/9340-8
Kingpost
Centremount Kingpost
Removal
If required, remove the boom K Boom ( T B-7) and dipper
K Dipper ( T B-5).
Note: Unless the kingpost is to be renewed, it is not
necessary to remove the boom and dipper to release the
kingpost from the machine.
!M
WARNING
Hydraulic Pressure
Hydraulic fluid at system pressure can injure you.
Before disconnecting or connecting hydraulic hoses
or couplings, vent the pressure trapped in the hoses in
accordance with the instructions given in this
publication.
HYD-1-5
At the kingpost, disconnect and plug the hydraulic hoses,
marking the hoses to ensure correct reconnection.
Support the backhoe by placing a sling from a crane
around the boom ram to kingpost pivot. (If the boom and
dipper have been removed, place the sling around the
kingpost.)
Remove the bolt retaining the slew ram eye end pivot pin
A. Drift out the pivot pin and swing the ram clear of the
kingpost. Repeat for the other slew ram.
Remove locking bolts from the upper and lower kingpost
pivot pins B and C. Drift out the pivot pins.
Using the crane, lift the excavator assembly away from the
machine.
Replacement
Replacement is a reversal of the removal procedure.
Apply JCB Special MPL grease to all pivot pins.
When assembly is complete, operate excavator services
fully to bleed the hydraulic system then check the hydraulic
level.
707791-1
Fig 1.
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