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3-20
PART
3·3
POWER STEERING
Section
1 Description
& Operation
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Operation
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Power
Steering
Pump
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J:o'low Control Valve
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Pressure Relief Valve
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2 In-Car
Adjustments
&
Repairs
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Pump Belt Tension
Adjustment
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Power Steering Pump to
Steering
Box Hoses
&Tubes ............
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3 Removal
&
Installation
Page
3-20
3-21
3-24
3-25
3-25
3-25
3-25
3-25
3-25
D
DESCRIPTION AND OPERATION
DESCRIPTION
The
Bendix-Bishop Variable
Ratio
Integral Steering Gear
is an
entirely
new unit,
and has unique
features
designed
to reduce steering wheel
turns, increase road 'feel' and sim-
plify
maintenance.
The term 'Integral' is used to
denote that the power
cylinder
and
valve
mechanism
are
incorporated
in
the steering gear itself, as distinct
from having a
separate
booster cylin-
der and valve as with linkage-boosted
gears. The hydraulic oil
supplied
from the power
steering pump
serves
to
lubricate
the gear
mechanism.
No
bleeding
of this unit is
required.
'Variable
Ratio' refers to the fact
that steering in the
straight-ahead
position
is substantially less direct
than in turns, to such an extent that,
whereas
four turns of the
steering
wheel would be required if the 'on
centre' ratio were used
constantly
from lock to lock; in fact, only 2*
are needed with this system. This
feature is
provided
by a variable
pitch
hourglass
worm.
Hydraulic
oil flows
continually
from the pump
mounted
on the
engine to the steering gear at a
regulated constant flow of about
two gallons per
minute,
but for nor-
Section
Pare
Power
Steering
Pump
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3-26
6 Cylinder Engine
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3-26
8
Cylinder Engine
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3-26
Power
Steering
Pump Pulley
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3-26
4
Major
Repair Operations
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...A. ......
3-26
Power
Steering Gear
-
Disassembly
..... ..... . ....
3-30
Inspection
& Overhaul
of
Component Assemblies
3-30
Sector Shaft
Assembly
..... .....
3-30
Piston Rack
.....
.....
..... .....
3-31
Worm Valve & Sleeve
Assembly
3-31
Reassembly
..... ..... .....
.....
3-32
Setting Preloads
on
Steering
Gear.....
3-36
Fitment of
Steering Geat
to
Vehicle
3-37
Fig. 29
Bendix-Bishop Variable
Ratio
Steering
Gear
mal
driving very little pressure is
required
to
maintain
the flow, and
hence little
power
is
absorbed.
When
turning
or
parking however,
the free
flow of
oil
is
restricted
by the rotary
valve; pressure
builds up
almost in·
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