Rolls-Royce Silver
Shadow
&
Bentley
T
Series
Workshop
Manual
Chapter
N
6. Position the pump ring on the dowel pins with
the direction of rotation arrow (see Fig.
NI6) upper-
most indicating the pump direction of rotation.
The direction of rotation is anti-clockwise when
viewed from the pump rear as shown in Figure N16.
7.
Fit the drive-shaft snap ring to retain the rotor.
8.
Fit the vanes into the rotor slots with the radiused
edge facing outwards (see Fig.
N17).
9.
Fit the pressure plate
'0'
ring. Lubricate the
outside diameter of the pressure plate with petroleum
jelly to prevent damage to the fitted
'0'
ring, then
locate it on the dowels, with the port face towards
the pump ring.
10.
Apply pressure to the plate at its outer edges
(see Fig.
N18). Never apply great pressure or hammer
the centre of the! pressure plate as this will cause per-
manent distortion resulting in pump failure. The
pressure plate will compress the seal by approximately
&
in. (1,59 mm.).
11.
Position the pressure plate spring, locating the
leading coil in the groove on the upper side of the
plate.
12.
Fit the end plate
'0'
ring into the pump housing
groove.
13.
Lubricate the outer diameter of the end plate to
prevent damage to the fitted
'0'
ring. Position the
pump under a suitable arbor press (see Fig. N19) and
press the end plate into the housing sufficiently to
allow the retaining ring to be fitted (see Fig.
N12).
14.
Fit the retaining ring ensuring that is is fully
seated, then remove the pump from the press and tap
the end plate to ensure correct seating.
15. Fit the flow control valve and spring as shown
in Fig. N13.
16.
Fit the smaller
'0'
ring seals to the stud and
flow control valve holes.
17.
Fit the large
'0'
ring seal to the groove on the
outer diameter of the pump housing then fit the
cover/
reservoir.
18.
Fit and tighten the two studs and union.
Note The
cover/reservoir must
be
fully seated
prior to tightening the studs and union
to prevent damage to the reservoir.
i9.
Fit the pump front mounting (adjusting) bracket
using the three setscrews. Two of the three setscrews
are fitted with distance pieces.
20.
If the existing shaft key requires renewal, support
the drive-shaft by lightly clamping it in a vice then
replace the old key.
FIG. N15 CORRECT POSITIONING OF THRUST
PLATE
1
Dowel
pin
(2)
2
Thrust plate
21.
Fit the pulley on to the shaft, locating the slot
on the shaft key then fit the washer and nut. Partially
tighten the nut. The nut can be fully tightened only
when the pump is fitted to the engine complete with
tightened drive belts.
Steering
pump-To
fit
1.
Before attempting to fit the pump to the engine,
check that all the steering system hoses and pipes are
serviceable; renew any that are damaged or appear to
have deteriorated.
FIG.
N16 CORRECT POSITIONING
OF
PUMP
RING
1
Arrow
on
edge of
pump ring
2
Dowel hole
(2)
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