Digga Mini Trencher - NOTE: MAKE SURE ALL GEAR OIL IS DRAINED AT THIS POINT.

13
AUGER ADJUSTMENT
1. The spoil removal Auger is double
ended . When a 150mm or 200mm
chain is being used. The Augers must
be on the correct way around. This
illustration shows the Augers being
tted with the narrow end closest to
the chain.
IMPORTANT
When a 250mm or 300mm chain is
being used it is important that the
Augers are turned end for end and
tted with the wide end closest to the
chain. If this is not done the chain
may foul with the Augers.
5 mainTenance
SEAL REPLACEMENT
Before the seal can be replaced remove
retaining collar and sprocket as shown in
sprocket replacement. Then remove the
key and seal protector. Place a screwdriver
between outside of seal and inside of
housing. Tap gently with a hammer until
the seal can be levered out Fig 1. Inspect
the inside of the housing for damage and
if damaged or burred, clean up with emery
cloth.
Proceed to t the seal by using a large punch
and gently tap the seal into place ensuring
the seal is punched in evenly (see Fig 3). This
is very important as any misalignment could
cause damage to the seal and promote a leak.
The seal must be ush with the end of the
housing. Replace seal protector, key, sprocket
and retaining collar. Rell the planetary with
gear oil (See lubrication for correct amount,
grade of gear oil, and oil lling procedures).
Before the seal can be replaced run
some grease around the inside lip of the
seal for lubrication to the shaft. Ensure
there are no burrs on the shaft between
the end of the shaft and the end of the
housing. File if necessary. Using loctite
243 (or equivalent) run a small bead
around the outside of the seal see
Fig 2.
Fig 2 Fig 3Fig 1
NOTE: MAKE SURE ALL GEAR OIL IS DRAINED AT THIS POINT.