Starter Motor; To Remove And To Fit; To Maintain The Brush Gear And The Commutator - Perkins 1000 Series Workshop Manual

Starter motor

To remove and to fit

Consumable products:
POWERPART Hylosil
To remove
If the engine has a flywheel housing which is oil
filled, drain the flywheel housing before the starter
motor is removed.
1 Disconnect the battery.
2 Disconnect the starter motor cables.
3 Release the fasteners and remove the starter
motor and, if necessary, the distance piece.
To fit
1 If necessary, put the distance piece in position
with its location lip to the flywheel housing. Fit the
starter motor and tighten the fasteners.
2 Connect the starter motor cables. If the engine
has a flywheel housing which is oil filled, the starter
motor must be sealed before it is fitted. Clean the
flange face of the starter motor and the face of the
flywheel housing. Apply a 2,0 mm (0.080 in)
continuous bead of POWERPART Hylosil to the
flange face of the starter motor near to the spigot.
3 Connect the battery.
To maintain the brush gear
and the commutator
CA45G or S115 starter motors
Inspect the brushes at intervals to ensure that they
are free in their guides and that the wire
connections are free to move. To check this, lift the
spring from the brush and pull carefully on the
flexible connections. If the brush does not move
freely, remove it from its holder and clean the sides
with a material which is damp with gasolene.
Ensure that the brushes are fitted in their original
positions to keep the original wear seat. The
brushes must have good seats which conform to
the shape of the commutator. If the brush seat is
not correct, put a piece of very fine carborundum
paper or similar material tight around the
commutator with the rough face to the outside. With
the brush in position, turn the armature by hand, in
the normal direction of rotation, until the brush has
the correct shape. If the brushes are worn and the
springs do not give enough pressure, they must
Perkins Phaser/1000 Series, April 1995
ELECTRICAL EQUIPMENT
be renewed. Check the spring pressure with the
hook of a spring balance under the spring lip. The
correct tension is 8,34/11,00 N (30/40 ozf)
23B-01
0,85/1,13 kgf.
The new brushes must be the exact same grade as
the original brushes. To ensure that correct brushes
are fitted, use only parts from the approved
manufacturer. To remove the brushes, remove the
four setscrews that hold the brushes, one for each
brush. When the new brushes are assembled,
connect carefully the field coil and connector wires,
held by two of the setscrews. Before the brushes
are inserted in their holders, it is advised that the
holders are cleaned with compressed air or with a
material which is damp with gasolene.
The commutator must be completely clean; dirt or
oil must be removed by a piece of clean dry
material (with no loose fibres) pressed against it,
while the armature is turned by hand.If the
commutator is dirty and has a colour other than its
natural colour, lift the brushes and put a strip of fine
carborundum paper or similar material around the
commutator, with the rough surface to the inside.
Turn the armature by hand until the surface has
returned to its natural colour. Clean the commutator
with a material which is damp with gasolene.
If a repair is necessary to the commutator or switch
gear, etc. the starter must be removed for specialist
repair.
M127 Starter motor
Repair of this starter motor is more difficult. If
necessary, remove the starter motor for specialist
23B-02
repair.
23B
23B.03