25 - 1
Extending Dipper
- Wear Pad Adjustment
The Extradig dipper wear pads are bolt-on replaceable
items. They support and guide the inner dipper section
during extension and retraction. The following procedures
explain how to inspect, and where applicable, adjust the
pads.
There is a front and rear set of pads, each set comprises top
wear pads A and bottom wear pads B.
The top wear pads A are not adjustable and must be
replaced with new pads once they have worn to their limit.
See Inspecting the Top Wear Pads.
The bottom wear pads B are adjustable and take up the
wear on both the top and bottom pads. They must also be
replaced with new pads once they have worn to their limit.
See Adjusting the Bottom Wear Pads.
New wear pads A and B must be replaced as a set and
fitted by a qualified service engineer.
Inspecting the Top Wear Pads
1 Park the machine on level ground. Engage the parking
brake and put the transmission in neutral.
2 Position the boom and dipper as shown at C. Retract
the Extradig dipper D. Make sure that the bucket is
clear of the ground and the dipper is supported.
3 Stop the engine and remove the starter key.
Renew the pads when, or before they are worn down to the
depth of the recess/chamfer as shown at E. If the pads are
worn near to their limit then inspect them more frequently
than recommended in the Service Schedules. To avoid
damage to the dipper or wear pad make sure the pads are
fitted the correct way round as shown at J.
Torque Settings
Item Nm kgf m lbf ft
F 56 5.7 4
Section B Body and Framework
9803/3280
Section B
25 - 1
Issue 1
Service Procedures
A
A
B
B
D
C
E
J
F
S312991
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