Power steering pump drivebelt (early
“M” series engines)
8 Refer to Chapter 4, Part A or B, and remove
the air cleaner components as necessary, for
access.
9 Undo the retaining screw and remove the
cover over the camshaft pulley (see illustration).
10 Undo the bolts securing the coolant
bypass pipe to the cylinder head and to the
main coolant pipe, and move the bypass pipe
aside as necessary for access.
11 To check and adjust the belt tension
accurately it will be necessary to obtain a
socket to fit the power steering pump pulley
retaining nut, a socket bar of at least 12 inches
in length, and a spring balance capable of
recording a minimum of 25 lbs. Make a paint
mark or similar on the socket bar, 12 inches up
from the centre of the square drive end.
12 Slacken the centre retaining nut on the
belt tensioner wheel, then turn the tension
adjuster bolt clockwise until the belt is slack.
Retighten the tensioner wheel retaining nut to
5.0 Nm.
13 Fit the socket and bar to the pump pulley
retaining nut, and position it so that the socket
bar is vertical.
14 Attach the spring balance to the socket
bar at the point marked 12 inches up from the
square drive end.
15 Turn the adjuster bolt anti-clockwise until
it takes a pull of 25 lbs to make the pump
pulley slip. This procedure is shown (see
illustration 16.9), but using the Rover special
tool. The socket and bar are a substitute for
this tool.
16 Remove the socket, bar and spring
balance, then turn the crankshaft until the
camshaft pulley has turned through 180º.
17 Check the belt tension again, and re-
adjust if necessary.
18 Now turn the tension adjuster bolt anti-
clockwise two complete turns.
19 Tighten the tensioner wheel retaining nut
fully to the specified torque.
20 Refit the coolant pipe retaining bolts, and
the cover over the camshaft pulley.
21 Refit the air cleaner components.
Alternator/power steering pump/air
conditioning compressor drivebelt
(later “M” series engines)
22 Accurate tensioning of the drivebelt on
cars with this arrangement can only be
achieved with the Rover belt tensioning tool,
and ideally this operation should be carried
out by a Rover dealer. However, if a new belt
has been fitted, or if the existing tension is
extremely slack, a rough approximation as a
temporary measure can be achieved using the
following procedure.
23 To adjust the belt tension, slacken the idler
pulley retaining nut, then turn the adjuster bolt
clockwise to increase the tension or anti-
clockwise to decrease it, until it is just possible
to twist the belt by hand through 90º at a point
midway between the crankshaft and power
steering pump pulleys (see illustration).
Every 12 000 miles 1•17
16.23 Drivebelt adjustment on later “M” series 4-cylinder engines
1 Drivebelt 2 Checking gauge - Rover
special tool
3 Idler pulley retaining nut
4 Adjuster bolt
16.9 Power steering pump drivebelt adjustment on early “M” series 4-cylinder engines
1 Camshaft pulley cover
retaining screw
2 Camshaft pulley cover
3 Coolant pipe retaining bolt
4 Coolant pipe
5 Drivebelt
6 Belt tensioner wheel centre
retaining nut
7 Tension adjuster bolt
8 Rover special tool for
checking tension
9 Spring balance
1
1380 Rover 800 Series Remake
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