Terex Fermec 760, Service Training

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38
Replacing the starter motor brushes
Replace the brushes as follows:
1. Gain access to brushes, refer to page for
Servicing end cover (steps 1 through 10).
2. On earth brushes, cut the flexible wires adjacent
to the old brushes (1) and solder new brushes
on to the flexible wires.
3. On insulated brushes, cut the flexible wires adja-
cent to the old brushes (1). Open the eyelet on
the new brush. Apply a thin coat of solder and
crimp the eyelet onto the flexible wire and solder
together.
4. Install the cover, refer to Servicing end cover
(steps 12 through 21).
789M062A
Replacing the bushes in the starter
motor
Replace the bushes in the starter motor as follows:
1. Gain access, as necessary to the bush (1), (3) or
(5) to be replaced.
2. If the bush (5) in the end cover (6) is to be
replaced, remove the bush (5) using a 9/16 in,
Whitworth tap.
3. If the bush (1) in the intermediate plate (4) is to
be replaced, remove the bush (1) using a drift
with a pilot diameter of 28.51 mm (1.226 in).
4. If the bush (3) in the housing (2) is to be
replaced, remove the bush (3) using a drift hav-
ing a pilot diameter of 17.03 mm (0.6705 in).
5. Immerse the replacement bush (1), (3) or (5) in
clean engine oil for 24 hours.
NOTE : The oil absorption time can be reduced by
heating the oil to 100
°
C (212
°
F) for 2 hours and
allowing it to cool before removing the brush. A ther-
mometer is essential to prevent overheating the oil.
6. Install the bush (5) into the end cover (6) using a
drift having a pilot diameter of 12.71 mm (0.5 in).
7. Install the bush (1) into the intermediate plate (4)
using a drift having a pilot diameter of 28.51 mm
(1.226 in).
8. Install the bush (3) into the housing (2) using a
drift having a pilot diameter of 17.03 mm
(0.6705 in).
9. Assemble the starter motor as necessary, refer
to Assemble page .
789M353A
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