Rolls-Royce Silver Shadow User Manual

Workshop Manual
Rolls- Royce Silver Shadow 8 Bentley T Series
Chapter M
Warning Excessive heat can cause immediate
and permanent damage to diodes.
It is
recommended that a pair of long nosed
pliers be used to grip the diode shank
to act as a thermal shunt and that the
operation be carried out as quickly as
possible.
8.
Apply lamp test as detailed under Alternator -
Bench testing to ascertain that the diodes are
functioning correctly.
9.
Thread lead A through a new rubber grommet.
If the lead is cotton braided it is advisable to
replace this with a Unipren covered lead, size
Unipren 4.
10.
Replace heat sink assembly in SRE shield.
Secure with the two cheese headed screws, plain
and spring washers. Replace grommet and A lead,
and re-fit Ross Courtney tag.
11.
Fit new
'0' ring to groove in internal bore of
slip ring housing.
12.
Replace plain and spring washers, main
terminal post retaining nuts, spring washers and
main terminal nuts.
Assembly
Normal workshop practices should be followed
taking special care to keep working surfaces and
tools clean.
1.
Lay the stator on the bench with the three
stator phase leads facing upwards.
2.
Invert the end shield and locate it over the
stator, so that the three wide spaces on the heat
FIG. M23 BENCH TEST CIRCUIT
1 Alternator 7 Voltmeter
2 Ammeter
8 Switch
3 Battery
9 Switch
4 Switch 10 Switch
5 Ignition lamp 11 Ammeter
6 Regulator 12 Carbon pile resistor
(60 amps minimum)
sink finn~ng coinride with the three stator phase
leads. Carefully lower the slip ring end shield to
the stator and align scribe marks. Twist stator
phase leads once only around heat sink tags and
solder.
3. Fit spacer over the rotor drive shaft and insert
drive shaft through the bore of the drive end shield
ballrace.
4.
Support the rotor, slip rings downwards,
between a pair of parallel blocks on a suitable
handpress table (great care must be exercised at
this stage not to damage the rotor field leads with
the blocks). Gently press the drive end shield into
place with a suitable piece of tube pressing on the
bearing housing.
5.
Assemble the rotor and slip ring end shield
assembly to the drive end ensuring again that the
scribed lines are in alignment. Insert the three
through bolts with
' Loctite' grade A applied to the
threads and tighten them evenly and progressively
whilst gently tapping the slip-ring end shield with
a hide faced mallet to draw end shields squarely
into position. Finally tighten the through bolts to a
maximum torque of
0,52 kg.m. (45 1b.in.).
6. Refit brushes to brush box making sure that the
terminals are fully seated. Thread
' 0' sealing rings
over both the terminal posts and assemble insulator
to one of the terminals. Fit Lucar blades and
crinkle washers to both terminals and secure with
terminal nuts.
7.
Fit a new gasket to the brush box moulding and
assemble brush gear to the slip ring end shield.
Cnrrect positioning is ensured by the locating
dowel. Secure with retaining screws, plain and
spring washers. Reconnect
' A' lead to terminal post
marked
' A', secure with crinkle washer, plain
washer and terminal nut.
8. Fit fan spacer machined slot outwards and
aligned with keyway. Fit woodruff key, fan pulley
and pulley nut. Tighten pulley nut to a torque of
5,3 kg,m. (40 1b.ft.).
Alternator-Bench testing
Procedure
1.
Before making any connections, test the
alternator for earths by
non-destructi*~ flash test
(or Megohm Meter) with voltage rating of 110 volt.
Connect instrument between
D+ and earth, D-and
earth and A terminal and earth. Make sure always
to keep the one probe on the frame so as not to
apply full test voltage between any two terminals
on the alternator.
If Megohm Meter is-used the mini-
mum insulation resistance should be 10 megohms.
2.
Mount the alternator to the test machine drive
and make all connections to the battery
a~~d
regulator as wiring diagram.

Rolls-Royce Silver Shadow Specifications

General

Brand	Rolls-Royce
Model	Silver Shadow
Category	Automobile
Language	English