
Replacing the Digging
Chain
Removing the Digging Chain
Preparing to Remove the Digging Chain
1.
Park the machine on a level surface, lower the
loader arms, and tilt the boom to the horizontal
position.
2.
Rotate the digging chain until the master pin is
positioned at the top of the idler wheel (
3.
Shut off the engine and remove the key.
4.
Remove the bolt and locknut securing the spoils
auger and remove the auger (
).
Note:
Retain the hardware for installation later.
g270627
Figure 13
1.
Bolt (5/8 x 4 inches)
3.
Locknut (5/8 inch)
2.
Spoils auger
5.
Loosen the jam nuts and move them to as close
to the head of the tensioning bolts as possible
(see
Removing the Master Pin in the Digging Chain
1.
Counting from the master pin, loop a 3.65 m (12
foot) lifting strap with a lifting capacity of 181.4
kg (400 lb) around the chain at the digging tooth
of the fifth or sixth link below and forward of the
boom (
).
2.
With the strap attached to the lifting equipment,
raise the lifting strap enough to support the
digging chain.
3.
Clamp the ends of the chain with a with a chain
clamp at the link rollers at either side of the inner
and outer plates at the master pin (
).
g272492
Figure 14
1.
Chain clamp
2.
Master pin hole
4.
Straighten or cut off the tail of the safety pin and
remove the pin (
).
g272491
Figure 15
1.
Master pin
3.
Safety pin (bent 30° to
45°)
2.
Safety pin
Note:
Discard the safety pin.
5.
Remove the master pin and the roller for the
master pin (
).
Note:
Retain the master pin and the roller for
installing the replacement chain.
15