Rolls-Royce Silver Spur 1985 Service Schedule Manual page 49

SERVICE SCHEDULE MANUAL
To ascertain that the thermostat has actuated. a
rise in the temperature of the oil cooler return pipe
(see fig.
81/1·4)
can be felt. This temperature rise
occurs as hot oil begins to flow from the oil filter
housing. where the thermostat is situated. to the oil
cooler mounted in front of the coolant radiator matrix.
Do not attempt to attain the required engine oil
temperature rise with the car stationary.
When it has been ascertained that the engine oil
has been passing through the cooler. thus filling this
part of the lubrication system. check the oil level in the
normal manner as described previously.
4 Check the drive belts
Before commencing to adjust the drive belts inspect
them for signs of wear or cracking. Any belts found
unsatisfactory should be renewed.
If after adjustment, a matched pair of belts have a
marked variation in tension, a new pair should be
fitted. Always renew both belts in a matched pair, even
if only one belt is faulty.
Two belt tension loads are specified; a new belt
load for replacement (new) belts and a retensioning
load for belts which are satisfactory for further service.
The belt tension must be checked at a point
midway between
two
pulleys by use of a belt tension
meter.
Belt dressing must not be applied to prevent
belt slip.
Crankshaft to coolant pump/steering pump
The belt tension meter reading should be as follows.
New belt 36.3 kgf to 40,8 kgf (80 lbf to 90 lbf).
Retensioned belt 31, 7 kgf to 36.3 kgf
(70 lbf to
80
lbf).
The tension of this matched pair of belts is
adjusted by altering the position of the steering pump.
Slacken the setscrew securing the steering pump
mounting bracket pivot and the clamping setscrew on
the belt tensioner situated below the steering pump
(see fig. B 1/1 ·5).
Carefully adjust the tensioner until the correct belt
tension is attained.
When the belt tension is correct. tighten the
tensioner clamp and mounting bracket pivot
setscrews.
If the alternator belt is to be adjusted the
mounting bracket pivot setscrew can remain slack until
adjustment has been carried out.
Ensure the belt tension is still correct when the
steering pump is fully secured.
Crankshaft to coolant pump/alternator
The belt tension meter reading should be as follows,
New belt ·36.3 kgf to 40,8 kgf (80 lbf to 90 lbf).
Retensioned belt 31. 7 kgf to 36,3 kgf
(70 lbf to 80
lbf).
The belt tension is adjusted by altering the
position of the alternator.
Slacken the alternator mounting setscrew and the
November 1 984
Section 81/1
81/1·5
Fig. B1 /1 ·5 Engine drive belt adjustment points
Inset· Refrigeration compressor rear
pivot
Fig. 81 /1 ·6 Engine air intake filter
(Air intake trunk disconnected)
clamping setscrew on the belt tensioner situated
above the alternator { see fig.
B 1/1 ·5 }.
Carefully adjust the tensioner until the correct belt
tension is attained.
When the belt tension is correct. tighten the belt
tensioner clamping setscrew and alternator mounting
setscrew.
Ensure the belt tension is still correct when the
alternator is fully secured.
TSD 4406
Printed in England
©
Rolls-Royce Motors Limited
1984