Alternator
Type:
4-cylinder engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lucas/Magneti-Marelli A127, A133 or A1271
V6 engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nippondenso CGK 46
Brush length (nominal):
New . .20.0 mm
Minimum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.0 mm
Starter motor
Type:
4-cylinder engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lucas/Magneti-Marelli M78R or M79
V6 engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nippondenso DR 5U1
Minimum brush length (nominal): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0 mm
Torque wrench settings Nm lbf ft
4-cylinder engines:
Ignition coil bracket bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 18
Knock sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 9
Crankshaft sensor bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4
Alternator pivot and mounting bolts . . . . . . . . . . . . . . . . . . . . . . . . . . 25 18
Alternator adjustment bracket bolts . . . . . . . . . . . . . . . . . . . . . . . . . . 12 9
Starter motor bolts:
Manual transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 63
Automatic transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 33
V6 engines:
Alternator side pivot bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 33
Alternator lower mounting nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 18
Starter motor bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 33
5•2 Engine electrical systems
1380 Rover 800 Series Remake
1 General information,
precautions and battery
disconnection
General information
The engine electrical systems include all
ignition, charging and starting components.
Because of their engine-related functions,
these components are discussed separately
from body electrical devices such as the
lights, the instruments, etc (which are
included in Chapter 12).
Precautions
Always observe the following precautions
when working on the electrical system:
(a) Be extremely careful when servicing
engine electrical components. They are
easily damaged if checked, connected or
handled improperly.
(b) Never leave the ignition switched on for
long periods of time when the engine is
not running.
(c) Don’t disconnect the battery leads while
the engine is running.
(d) Maintain correct polarity when connecting
a battery lead from another vehicle during
jump starting - see the “Jump starting”
section at the front of this manual.
(e) Always disconnect the negative lead first,
and reconnect it last, or the battery may
be shorted by the tool being used to
loosen the lead clamps.
It’s also a good idea to review the safety-
related information regarding the engine
electrical systems located in the “Safety first!”
section at the front of this manual, before
beginning any operation included in this
Chapter.
Battery disconnection
Several systems fitted to many of the cars
covered by this manual require battery power
to be available at all times, either to ensure
their continued operation or to maintain
control unit memories (such as those used to
control the seat and mirror positions, the
operation of the electric windows and sun
roof, and the retention of the radio/cassette
and CD player security codes). Additionally,
on engines with single-point fuel injection, the
idle mixture settings stored in the fuel system
ECU will also be lost when the battery is
disconnected. Whenever the battery is to be
disconnected therefore, first note the
following, to ensure that there are no
unforeseen consequences of this action:
(a) First, on any vehicle with central locking, it
is a wise precaution to remove the key
from the ignition, and to keep it with you,
so that it does not get locked in if the
central locking should engage
accidentally when the battery is
reconnected!
(b) If the battery is disconnected while the
alarm system is armed or activated, the
alarm will remain in the same state when
the battery is reconnected.
(c) As mentioned above, on cars equipped
with single-point fuel injection, the idle
mixture settings stored in the memory of
the fuel system electronic control unit will
be lost whenever the battery is
disconnected. When the battery is
reconnected, the control unit will adopt a
set of nominal parameters which will allow
the engine to run, but the mixture setting
will be outside the manufacturer’s
specification. Should the engine
performance be unsatisfactory, the
control unit can be calibrated as a
temporary measure using the procedure
described in Chapter 4, Part A, Sec-
tion 11, until such time as, the setting can
be accurately adjusted by a dealer.
(d) Recalibration procedures for the seat and
mirror position memory, the electric sun
roof and window memories, and the “lazy
locking” memories on models so
equipped are provided in Chapter 11,
Section 1.
(e) If a Rover original equipment
radio/cassette player or CD player is
fitted, and the unit and/or the battery is
disconnected, the unit will not function
again on reconnection until the correct
security code is entered. Details of this
procedure, which varies according to the
unit and model year, are given in the
Rover “In-car entertainment” booklet
supplied with the vehicle when new.
Ensure you have the correct code before
you disconnect the battery. For obvious
security reasons, the procedure is not
given in this manual. If you do not have
the code or details of the correct
procedure, but can supply proof of
ownership and a legitimate reason for
wanting this information, the vehicle’s
selling dealer may be able to help.
Devices known as “memory-savers” (or
“code-savers”) can be used to avoid some of
the above problems. Precise details vary
according to the device used. Typically, it is
plugged into the cigarette lighter, and is
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