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8.4 Solenoid winding check
A Battery terminal
C Spade terminal
B Motor terminal
Solenoid check
3 Disconnect the battery negative lead, and all
leads from the solenoid.
4 Connect a battery and a 3 watt test lamp
between the solenoid body and the solenoid
motor terminal (see illustration). The test
lamp should light: if not, the solenoid windings
are open-circuit.
5 Connect a battery and an 18 to 21 watt test
lamp across the solenoid motor and battery
terminals. Connect a further lead from the
battery positive terminal to the solenoid spade
terminal (see illustration). The solenoid
should be heard to operate and the test lamp
should light: if not, the solenoid contacts are
defective.
On load voltage check
6 Remake the original connections to the
solenoid and reconnect the battery negative
lead. Connect a voltmeter across the battery
terminals, then disconnect the low tension
lead from the coil positive terminal and
operate the starter by turning the ignition
switch. Note the reading on the voltmeter
which should not be less than 10.5 volts.
7 Now connect the voltmeter between the
starter motor terminal on the solenoid and the
starter motor body. With the coil low tension
lead still disconnected, operate the starter and
check that the recorded voltage is not more
than 1 volt lower than that previously noted. If
the voltage drop is more than 1 volt a fault
exists in the wiring from the battery to the
starter.
8 Connect the voltmeter between the battery
positive terminal and the terminal on the
starter motor. With the coil low tension lead
disconnected operate the starter for two or
three seconds. Battery voltage should be
indicated initially, then dropping to less than 1
volt. If the reading is more than 1 volt there is a
high resistance in the wiring from the battery
to the starter and the check in paragraph 9
should be made. If the reading is less than 1
volt proceed to paragraph 10.
9 Connect the voltmeter between the two
main solenoid terminals and operate the
starter for two or three seconds. Battery
8.5 Solenoid contact check
A Battery terminal
C Spade terminal
B Motor terminal
voltage should be indicated initially then
dropping to less than 0.5 volt. If the reading is
more than 0.5 volt, the solenoid and
connections may be faulty.
10 Connect the voltmeter between the
battery negative terminal and the starter motor
body, and operate the starter for two or three
seconds. A reading of less than 0.5 volt should
be recorded; however, if the reading is more,
the earth circuit is faulty and the earth
connections to the battery and body should be
checked.
9 Starter motor - removal and
refitting
1 Disconnect the battery negative lead. Raise
and support the front of the vehicle.
2 From underneath the vehicle, disconnect
the feed (heavy) cable from the solenoid.
3 Disconnect the command lead from the
solenoid spade terminal.
4 Undo the starter motor securing bolts and
(where fitted) the support bracket fastenings.
Withdraw the starter motor from the vehicle.
5 Refit by reversing the removal operations.
Check for correct operation on completion.
10 Starter motor - brush renewal
1 Disconnect the motor lead from the
solenoid terminal.
2 Remove the two screws which secure the
armature end cap. Remove the cap, the C-
washer and the plain washer(s).
3 Remove the two through-bolts or studs.
If the stud nuts are
inaccessible, lock two nuts
together on the stud and turn
them to unscrew it .
4 Remove the commutator end cover to
expose the brushgear. Carefully withdraw the
brushplate from the commutator. Be careful to
avoid damage to the brushes as they are
released.
5 Examine the brushes: they should not be
Engine electrical systems 5•5
excessively worn (see Specifications) and
must slide freely in their holders. Brush
renewal varies according to motor type as
follows:
Short frame - the brush lead must be
removed from the stand-off connector on the
brushplate, and the clip on the new brush lead
soldered to the connector.
Long frame - the old brush leads must be
cut and the new leads attached by soldering
Reduction gear - the brushplate must be
renewed complete with brushes, holders and
springs
6 Reassembly is the reverse of dismantling
whilst noting the following:
7 Clean the commutator with a rag moistened
with
methylated
spirit,
then
brushplate.
8 Either clip the brushes in place after fitting
the plate, or use a tube of suitable diameter to
keep the brushes retracted during fitting.
9 Make sure that the brushplate is correctly
positioned to allow the passage of through-
bolts or studs.
11 Spark plugs - removal,
inspection and refitting
See Chapter 1, Section 20.
12 HT leads, distributor cap and
rotor arm - removal, inspection
and refitting
See Chapter 1, Section 39.
13 Distributor - removal and
refitting
All engines except 2.4 & 2.9 litre V6
Note: The distributor should not be removed
without good cause, since the accuracy of
ignition timing achieved in production is
unlikely to be regained
1 Disconnect the battery negative lead.
2 Remove the distributor cap as described in
the previous Section. Depending on model, it
may be possible to move the cap aside
without disconnecting the HT leads.
3 Using a spanner on the crankshaft pulley
bolt, turn the engine to bring No 1 cylinder to
firing point. (If the distributor cap is secured by
clips, make sure the clips stay clear of the
distributor moving parts.) No 1 cylinder is at
firing point when:
a) The timing marks are in alignment.
b) The tip of the rotor arm is pointing to the
place occupied by the No 1 HT lead
connector in the distributor cap (see
illustration).
4 With No 1 cylinder at firing point, the tip of
the rotor arm should also be aligned with a
notch in the distributor body. Mark the notch
for reference when refitting.
5 Depress the locking tab on the distributor
refit
the
5
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