BENDIX C-300N HYDRAULIC POWER STEERING User manual

1
®
C-300N/C-500N HYDRAULIC POWER STEERING GEAR
SD-30-4265
POWER STEERING GEAR
DESCRIPTION
The Compact 300N and 500N (C-300N/C-500N), Hydraulic
Power Steerin Gears are desi ned for medium and heavy
duty vehicles with front axle wei ht ratin s of 6,000 to 9,000
lbs for the C-300N and up to 15,000 lbs for the C-500N.
They are inte ral power steerin ears incorporatin the
mechanical and hydraulic actuation and control components
in a sin le cast housin which serves as the power cylinder.
The C-300N and C-500N power steerin ears are very similar
in appearance with the major difference bein that the C-
500N is proportionately lar er than the C-300N.
The vehicles steerin column is coupled to the ear at the
input shaft which transmits steerin effort throu h a
recirculatin ball screw (spindle assembly) and piston. The
piston is an inte ral part of the power assist and also acts
as a steerin damper. The direction and de ree of power
assist is controlled by a rotary hydraulic valve which is inte ral
to the input shaft and spindle assembly. An en ine driven
hydraulic pump supplies the flow and pressure.
VALVE
BODY
PRESSURE
RELIEF & BYPASS
VALVE CAP NUT
C-300N
HOUSING
OUTPUT
SHAFT
INPUT
SHAFT
NAMEPLATE
ADJUSTING
SCREW
SIDE COVER
VALVE BODY
OUTPUT
SHAFT
OIL
SUPPLY
OIL RETURN
STEERING
LIMITING STEM
PLUG
C-500N
OUTPUT
SHAFT NAME PLATE
OIL RETURN
OIL SUPPLY ADJUSTING
SCREW
C-300N

2
SD-30-4265
TABLE OF CONTENTS
DESCRIPTION .............................................................. 1
OPERATION .................................................................. 1
 General ........................................................................ 1
 Mechanical .................................................................. 3
 Hydraulic ..................................................................... 4
 Rotary Control Valve .................................................... 4
 Steerin Limitin Valve ................................................ 7
 Pressure Relief Valve ................................................... 8
 Bypass Valve ............................................................... 8
POWER STEERING IDENTIFICATION ......................... 8
PREVENTIVE MAINTENANCE ..................................... 8
 Power Steerin Oil ....................................................... 8
 Drainin and Fillin the System ................................... 8
 Oil Chan e Intervals .................................................... 8
 Output Shaft Sector Teeth Adjustment .......................... 8
 Output Shaft Boot & Dust Seals ................................... 9
CAUTION NOTE ........................................................... 9
REMOVAL ..................................................................... 9
SPECIAL TOOLS .......................................................... 9
DISASSEMBLY .............................................................11
 General .......................................................................11
 Output Shaft Removal .................................................11
 Piston ........................................................................ 13
 Main Housin & Side Cover ....................................... 15
 Valve Body & Spindle ................................................ 16
 Output Shaft .............................................................. 18
 Pressure Relief & Bypass Valve ................................ 18
 Spindle ...................................................................... 18
CLEANING & INSPECTION ........................................ 19
REASSEMBLY ............................................................. 19
 General ...................................................................... 19
 Valve Body & Spindle ................................................ 19
 Piston ........................................................................ 21
 Housin ..................................................................... 24
 Output Shaft & Side Cover......................................... 25
ADJUSTMENT ............................................................ 26
 Piston to Output Shaft Gear Backlash ........................ 26
 Stroke Limitin Stem .................................................. 27
ON-VEHICLE POWER STEERING TESTS ................ 27
 Preliminary ................................................................ 28
 Pressure Relief Valve ................................................. 28
 Internal Leaka e ........................................................ 28
TECHNICAL DATA ...................................................... 29
ASSEMBLY TORQUE CHART .................................... 29
TROUBLESHOOTING ................................................ 30

3
FIGURE 1 - MECHANICAL OPERATION
FIGURE 2 - SPINDLE ASSEMBLIES
INPUT
SHAFT
PISTON
STEERING
WHEEL
PITMAN
ARM
SPINDLE
ASSEMBLY
PITMAN
ARM
PISTON
OUTPUT
SHAFT
RIGHT HAND
THREAD
LEFT HAND
THREAD
BALL
SCREW
PISTON OVER OUTPUT SHAFT MOUNTING
(LEFT HAND THREAD SPINDLE)
VEHICLE
RIGHT
TURN
STEERING
WHEEL
PISTON UNDER OUTPUT SHAFT MOUNTING
(RIGHT HAND THREAD SPINDLE)
OUTPUT
SHAFT SPINDLE
ASSEMBLY
INPUT
SHAFT
VEHICLE
LEFT
TURN
INPUT
SHAFT
OPERATION
GENERAL
Both steerin ears are composed of mechanical and
hydraulic power assist components.
Actual steerin is accomplished mechanically. Effort applied
at the vehicles steerin wheel results in mechanical
movement within the steerin ear which causes the vehicle
to chan e its direction of travel. The hydraulic power assist
components function solely to reduce the mechanical effort
required to turn the vehicles steerin wheel. Loss of hydraulic
power will in no way prevent the vehicle from bein
maneuvered mechanically, however reater effort will be
required to turn the steerin wheel.
MECHANICAL OPERATION
The turnin effort exerted by the driver on the steerin wheel
is transmitted to the input shaft which is part of the spindle
assembly. The spindle and piston function like a screw and
nut throu h the action of a chain of recirculatin balls that
serve as an interface. Rotation of the spindle causes axial
movement of the piston within the power cylinder. Gear teeth,
cut directly into the piston, mesh with correspondin ear
teeth on the output shaft. As the piston moves, the output
shaft and the attached pitman arm are rotated. Figure 1
Spindle and piston sets are provided with either ri ht or left
hand screw threads. Figure 2 The manner in which the
steerin ear is mounted on the vehicle determines of the
thread used. Figures 1, 2 & 3

4
FIGURE 3 - POWER STEERING GEAR MOUNTING CONFIGURATION
TIE
ROD DRAG
LINK
PISTON OVER
OUTPUT SHAFT
STEERING
ARM
PITMAN
ARM
TIE ROD
ARM
SPINDLE
ASSEMBLY
PISTON UNDER
OUTPUT SHAFT
When the steerin ear is mounted on the vehicle in a position
similar to the pisto u der output shaft illustration in figure
1, the piston and spindle used will have a ri ht hand thread.
A left hand thread is required when the steerin ear is
mounted in a position similar to the pisto over output
shaft illustration. In either mountin position, a ri ht turn is
accomplished when the input shaft is rotated clockwise and
the output shaft, alon with the pitman arm, rotate toward
the rear of the vehicle.
HYDRAULIC OPERATION
GENERAL
Functionin to ether, the spindle and valve body assemblies
serve as a means of flow and pressure control for the power
assist portion of the steerin ear. All hydraulic fluid enters
and exits the power steerin ear throu h lines connected
to the threaded ports in the valve body.
The valve body assembly forms a closure for the housin
and provides a means of retainin the spindle assembly. It
contains a series of circular channels and radial passa es
which serve to direct the flow of hydraulic oil into and out of
the rotary control valve in the spindle assembly. In addition,
the valve body can contain an optional pressure relief and
bypass valve. The pressure relief valve ensures that a preset
maximum pressure is not exceeded. It is always set at a
pressure level below that of the power steerin pump relief
valve and is intended to limit the power assist to a specific
maximum level. Figure 8
The optional bypass valve is intended to lessen the manual
steerin effort required in the event hydraulic pressure is
lost. The bypass valve permits fluid to circulate within the
steerin ear rather than bein forced to and from the power
steerin pump and reservoir. Figure 9
The spindle assembly rotates on a ball bearin in the bore
of the valve body. The spindle is composed of three major
parts;, the input shaft, torsion bar, and ball screw. One end
of the input shaft is finely splined for connection to the
steerin column while the other end has a coarse spline
which mates loosely with a similar spline inside the ball
screw. The coarse splines form mechanical stops which
limit the amount of relative rotation between the ball screw
and input shaft. Six evenly distributed lon itudinal rooves
are machined into the outer surface of the input shaft and
correspond to six rooves machined into the bore of the
ball screw. The torsion bar is pinned to the ball screw and
input shaft and forms a sprin connection between the two.
With the input shaft inserted into the ball screw the six
rooves of each of these components alternate with each
other and form the hydraulic rotary control valve. Holes on
the outside surface of the ball screw extend into the six
rooves within its bore. Figure 5
These holes allow pressurized oil to enter and exit the two
parts of the rotary control valve. There are three roups of
holes in the ball screw. Each roup is made up of three
different size holes which form a dia onal line across the
surface of the ball screw. The lar est hole in each roup
conducts pressurized oil into the rooves of the rotary
control valve. The second lar est hole in each roup
conducts oil out of the rotary control valve to the side of the
power piston furthest from the rotary control valve while the
smallest hole conducts oil to the closest side of the piston.
Figures 5 & 6

5
C-500N DETAIL
STEM PLUG
STEERING
LIMITING STEM
SPINDLE
ASSEMBLY
INPUT
SHAFT
ROTARY VALVE
BALL SCREW
TORSION BAR
RACK AND
SECTOR GEAR
OUTPUT
SHAFT
PISTON
HOUSING
STEERING
LIMITING STEM
POPPET
SEAT
POPPET
VALVE
RECIRCULATING
BALLS
STEERING
LIMITING
STEM
VALVE
BODY
VALVE NUT
SIDE
VIEW
FIGURE 4 - POWER STEERING GEAR
ADJUSTING
SCREW
ADJUSTING
SCREW LOCK
NUT
SIDE COVER
BALL TUBE
BALL TUBE
COVER
POPPET VALVE
SEAT
HOUSING
PISTON
RECIRCULATING
BALLS
RACK AND
SECTOR GEAR
OUTPUT
SHAFT
DUST
SEAL
DUST BOOT
SEAL AND
BACKUP RING
ROLLER
BEARINGS
NAMEPLATE
ADJUSTING
SCREW SPACER
END
VIEW

6
FIGURE 5 - SPINDLE ASSEMBLY WITH ROTARY VALVE COMPONENTS
FIGURE 8 - ROTARY VALVE OPERATION
BALL SCREW
(OUTER VALVE ELEMENT) OIL IN OIL OUT (RIGHT TURN)
OIL IN
SUPPLY
OIL OUT
LEFT TURN
TORSION BAR PIN
OIL RETURN (TO
PUMP RESERVOIR)
PIN HOLE
OIL OUT LEFT
TURN
OIL OUT RIGHT TURN
OIL OUT
RIGHT TURN
ROTARY VALVE
LONGITUDINAL
GROOVES ( )
(INSIDE HIDDEN
FROM VIEW)
OIL OUT
(LEFT TURN)
TORSION BAR OIL IN
SUPPLY
OUTER VALVE
ELEMENT GROOVE
OIL RETURN (TO
PUMP RES.)
INNER VALVE
ELEMENT GROOVE
SPINDLE ASSEMBLY
TORSION
BAR PIN OIL RETURN HOLES
(HIDDEN FROM VIEW)
INPUT SHAFT (INNER
VALVE ELEMENT)
TORSION BAR
STEERING
STOP
SPLINES
ROTARY
VALVE
GROOVES
( )
OIL
RETURN
HOLE
(FROM
PISTON
CAVITY)
OIL RETURN
HOLES (TO
PUMP RES.)
INPUT SHAFT
(ROTARY VALVE
INNER ELEMENT)
INPUT SHAFT &
TORSION ASSEMBLY
BALL SCREW
(ROTARY VALVE
OUTER ELEMENT)
SPINDLE ASSEMBLY
OIL OUT
(LEFT TURN)
OIL IN
OIL OUT
RIGHT
TURN
INPUT SHAFT (INNER
VALVE ELEMENT) BALL SCREW
(OUTER VALVE
ELEMENT)
TO
PUMP
RES.
OIL IN
OIL OUT
RIGHT
TURN
OIL OUT
(LEFT TURN)
OIL IN
OIL
RETURNING
FROM RIGHT
TURN SIDE OF
POWER
PISTON
OIL RETURNING
FROM LEFT TURN
SIDE OF POWER
PISTON
ROTARY CONTROL VALVE OPERATION
The rotary control valve is an open center type which allows
a continuous flow of oil (throu h the lon itudinal rooves in
the input shaft and bore of the ball screw) when held in the
neutral position by the torsion bar.
When steerin effort is applied, the input shaft and ball screw
tend to turn in unison, however the sprin action of the torsion
bar results in the input shaft rotatin sli htly in advance of
the ball screw. The six pairs of rooves that form the rotary
control valve are displaced from their neutral flow position.
As steerin effort increases, so does the amount of
displacement. Dependin on the direction steered, the roove
displacement of the input shaft directs hydraulic oil throu h
the appropriate drilled passa es in the ball screw to one
side or the other of the piston. Hydraulic pressure actin
TO
PUMP
RES.
TO
PUMP
RES.
LEFT TURN NEUTRAL RIGHT TURN

7
upon the piston surface eliminates much of the pistons
resistance to movement. Sprin force exerted by the torsion
bar causes the ball screw to rotate as piston resistance is
removed. As the ball screw rotates, the relative roove
displacement is eliminated and the rotary valve returns to a
neutral position.
Moderate effort at the steerin wheel produces smaller valve
displacements and lower power assist, thus providin ood
steerin feel. At Increased displacements, the pressure rises
more rapidly ivin increased power assistance and quicker
response. Maximum pressure is developed after
approximately 30 displacement ivin a direct feel to the
steerin . Groove displacement is limited by the clearance
of the stop spline mesh between the input shaft and ball
screw. The splines take up the steerin movement while
allowin the torsion bar to hold the roove displacement.
The torsion bar and stop splines form two parallel means of
transmittin the steerin torque. When no steerin torque
is applied, the torsion bar returns the valve rooves to a
neutral position allowin the pressurized oil to flow to the
return line. Fi ures 5 & 6.
STEERING LIMITING VALVE OPERATION
In steerin ears equipped with steerin limitin valve, power
assisted movement of the piston within its bore is limited by
poppet valves installed in both piston faces. As the piston
approaches its extreme travel in either direction, a stem
unseats the steerin limitin poppet valve. Some hydraulic
power assist is removed as pressurized oil passes around
the poppet valve to the other side of the piston and to the
return line. Continued movement of the piston will result in
removal of increasin amounts of power assist and cause
increased steerin effort. Steerin limitin reduces the
maximum power assist that can be transmitted to the axle
steerin linka es and components. Fi ure 7 When this feature
is incorporated in the C-300N, only one of the two steerin
limitin stems is externally adjustable. Both steerin limitin
stems in the C-500N are externally adjustable. Fi ure 4.
PRESSURE RELIEF VALVE OPERATION
The pressure relief valve is an option. Located in the valve
body, the pressure relief valve limits hydraulic pressure
within the power steerin ear to a preset maximum. While
the settin of the pressure relief valve may be adjusted to
various levels dependin upon part number and application,
it is always set to a pressure lower than the relief valve on
the power steerin pump. Fi ure 8.
FIGURE 7 - STEERING LIMITING POPPET VALVE OPERATION
HOUSING
PRESSURIZED SIDE
DURING RIGHT TURN
INPUT
SHAFT
LIMITING
STEM
BALL
SCREW
POPPET SEAT
RETURN
SIDE OF
PISTON
O-RING
OUTPUT
SHAFT
POPPET VALVES
(STEERING LIMITING)
PISTON
SPINDLE ASSEMBLY
OUTPUT
SHAFT
INPUT
SHAFT
PISTON
PISTON
ADJUSTABLE STEM
POPPET
VALVE
LIMITING
STEM
PRESSURIZED SIDE
OF PISTON DURING
LEFT TURN
POPPET VALVE
SPRING
EXTREME LEFT TURN POSITION POPPET VALVE OPEN EXTREME RIGHT TURN POSITION POPPET VALVE OPEN
FIGURE 8 - PRESSURE RELIEF VALVE OPERATION
INPUT
SHAFT
OIL
RETURN
CHANNEL
POWER
STEERING
GEAR
HOUSING VALVE
BODY
ADJUSTING
SHIMS
SPRING
PRESSURE
RELIEF
VALVE
PLUG
SPRING
SEAT
BYPASS
VALVE
PRESSURE
RELIEF VALVE
& PISTON
OIL SUPPLY
PORT
OIL RETURN
PORT

8
BYPASS VALVE OPERATION
The optional bypass valve is located adjacent to the pressure
relief valve in the valve body.
When it is necessary to steer the vehicle without the power
steerin pump in operation, the bypass valve permits oil to
flow from the return to the supply passa es within the
steerin ear. As the power piston moves inside the housin ,
oil displaced from one side is transferred to the other throu h
the bypass valve thus preventin reservoir floodin and
cavitation in the pressure line. Fi ure 9
POWER STEERING GEAR IDENTIFICATION
A nameplate is attached to the exterior of the housin
enerally on one of the mountin lu s. The information found
on the name ta is illustrated
PREVENTIVE MAINTENANCE
POWER STEERING OIL
It is important that an approved oil be used to ensure proper
operation of the power steerin unit. The vehicle
manufacturers recommendations should be adhered to.
Once an oil type is in use, it should never be mixed with any
other type. If it should become necessary to chan e types
of oil, the entire system must be drained followin the
procedure below.
DRAINING AND FILLING THE SYSTEM
1. Lift the front axle sufficiently to raise the wheels clear of
the round.
2. Remove the drain plu (54) and seal washer(53) or
disconnect the return line at the valve body outlet port.
(The outlet port is identified by the arrow which flows out
of the ear.) Turn the steerin wheel to the left as far as
it will o. Run the en ine for 10 seconds at the most
until the oil is drained from the reservoir and pump. Switch
off the en ine and turn the steerin wheel backwards
and forwards from full lock to full lock until all the oil is
drained out.
3. Clean the outside of the reservoir. Remove and replace
the old filter element.
4. Fill reservoir full of oil.
5. Turn the en ine over with the starter motor. (Must be
done in a manner that the en ine does not start.) Add oil
as the level drops to avoid air bein drawn into the
system.
6. When the oil level reaches the full mark on the dipstick,
start the en ine and turn the steerin wheel slowly from
side to side until air bubbles cease to appear in the
reservoir. Refill reservoir to full mark on the dipstick.
7. The oil level should be checked every 2,000 miles. The
correct level is between the minimum and maximum level
marks on the dipstick with the en ine stopped.
OIL CHANGE INTERVALS
It is recommended that the oil be chan ed at 40,000 mile
intervals and at the time of rebuild. Beyond its function as
the media for transmittin power, the oil also serves to
lubricate and dissipate heat. Carefully clean, inspect, and
replace if necessary all filter elements in the pump system
includin vents and breathers.
OUTPUT SHAFT SECTOR TEETH
ADJUSTMENT
The ear lash or preload between the piston teeth and sector
ear should not require attention in normal service, however
a provision for adjustment is provided.
Adjustment requires that the steerin ear be drained and
the pitman arm and input shaft be disconnected from the
vehicle. The adjustment procedure is described at the end
of the assembly section of this manual.
POWER STEERING GEAR NAMEPLATE INFORMATION
SERIAL NUMBER
BENDIX ASSEMBLY
PART NUMBER MONTH ASSEMBLED
(A = JAN., ETC.
VEHICLE
MFGR
PART
NUMBER
LOCATION OF
MANUFACTURE
YEAR ASSEMBLED
(LAST DIGIT)
FIGURE 9 - BYPASS VALVE OPERATION
INPUT
SHAFT
OIL
RETURN
CHANNEL
POWER
STEERING
GEAR
HOUSING VALVE
BODY
SPRING
BYPASS
VALVE
OIL SUPPLY
PORT
OIL RETURN
PORT

9
FIGURE 10 - TOOLS FOR ASSEMBLY/DISASSEMBLY
PART NUMBER 10 234 (REQUIRED)
PART NUMBER 297 7 (REQUIRED)
PART NUMBER 298077 (OPTIONAL)
PART NUMBER 10 7 2 (OPTIONAL)
SPANNER WRENCH - REQUIRED FOR REMOVAL
AND INSTALLATION OF THE VALVE NUT.
SEATING TOOL - REQUIRED TO FORM TEFLON GLIDE RINGS
AND TO INSTALL SPINDLE ASSEMBLY IN VALVE BODY.
PILOTED SCREWDRIVER - USED TO REMOVE AND
INSTALL THE PRESSURE RELIEF VALVE SEAT.
HOLDING FIXTURE - USED TO HOLD THE PISTON AND
VALVE BODY DURING ASSEMBLY AND DISASSEMBLY.
EXTERIOR BOOTS AND DUST SEALS
Inspect the inte rity of the output and input shaft boot and
dust seal. These components prevent contamination from
enterin the housin around the shaft. If deterioration is
noted, these components should be replaced. The cavities
between the boots and seals should be filled with special
hi h temperature rease.
IMPORTANT! PLEASE READ AND FOLLOW
THESE INSTRUCTIONS TO AVOID
PERSONAL INJURY OR DEATH:
When workin on or around a vehicle, the followin eneral
precautions should be observed at all times.
1. Park the vehicle on a level surface, apply the parkin
brakes, and always block the wheels.
2. Stop the en ine when workin around the vehicle.
3. If the vehicle is equipped with air brakes, make certain
to drain the air pressure from all reservoirs before
be innin ANY work on the vehicle.
4. Followin the vehicle manufacturers recommended
procedures, deactivate the electrical system in a manner
that removes all electrical power from the vehicle.
5. When workin in the en ine compartment the en ine
should be shut off. Where circumstances require that
the en ine be in operation, EXTREME CAUTION should
be used to prevent personal injury resultin from contact
with movin , rotatin , leakin , heated, or electrically
char ed components.
6. Never connect or disconnect a hose or line containin
pressure; it may whip. Never remove a component or
plu unless you are certain all system pressure has
been depleted.
7. Never exceed recommended pressures and always wear
safety lasses.
8. Do not attempt to install, remove, disassemble or
assemble a component until you have read and
thorou hly understand the recommended procedures.
Use only the proper tools and observe all precautions
pertainin to use of those tools.
9. Use only enuine Bendix replacement parts,
components, and kits. Replacement hardware, tubin ,
hose, fittin s, etc. should be of equivalent size, type,
and stren th as ori inal equipment and be desi ned
specifically for such applications and systems.
10. Components with stripped threads or dama ed parts
should be replaced rather than repaired. Repairs requirin
machinin or weldin should not be attempted unless
specifically approved and stated by the vehicle or
component manufacturer.
11. Prior to returnin the vehicle to service, make certain all
components and systems are restored to their proper
operatin condition.
REMOVING THE POWER STEERING GEAR
1. Mark or identify the inlet and return lines at the valve
body ports.
2. Drain the system followin the instructions presented
under Preventive Maintenance. Remove both inlet and
return lines.
3. Disconnect the steerin column at the input shaft
followin the vehicle manufacturers instructions.
4. Disconnect the pitman arm from the vehicles steerin
linka e usin the vehicle manfacturers instructions.
CAUTION: If it is necessary to remove the pitman arm
before the steerin ear is removed from the vehicle,
DO NOT USE HEAT OR POUND ON THE PITMAN
ARM OR OUTPUT SHAFT as dama e can result. Do
not attempt repairs to these components. They must be
replaced if dama ed. Use a lar e ear puller to remove
the pitman arm such as Snap-On puller #CG-283 or
Ford part number T64P-3590-F.

10
3
4
5
7
8
9
1
2
14
15
1
11
12
17
19
18
28
28
29
53
13
4 47
51
42
43
41
23
24
25
2
27
20
21
22
44
37
38
40
3
39
35
45
49
34
32
31
54
29
30
33
9
35
9
50
48
9
2
17
18
9
7
21
20
19
10
52
A 1
B 2
C-500N DETAIL OF VALVE
BODY AND STEERING
LIMITING STEM
ALTERNATE BALL
RETURN TUBE STYLE
FOR C-300/N/C-500N
FIGURE 7 - C-300N / C-500N POWER STEERING GEAR
1. Valve Nut
2. External Dust Seal
3. Spindle Assembly
4. Internal Dust Seal
5. Seal
6. all Cage
7. Valve ody
8. all Race
9. all
10. Teflon Ring
11. O-Ring
12. O-Ring
13. Steering Limiting Stem
14. Seal Ring
15. O-Ring
16. Spring
17. Valve Seat
18. Sealing Washer
19. Steering Limiting Stem
20. O-Ring
21. Plug
22. Housing
23. Piston
24. Tube Cover
25. Output Shaft
26. Rollers
27. O-Ring
28. ackup Ring
29. Seal & ackup Ring
30. Retaining Ring
31. Side Cover
32. Nut
33. Adjusting
34. Adjusting Screw Spacer
35. all Tube
36. Retaining Ring
37. O-Ring
38. Dust Seal
39. Dust oot
40. olt
41. Adjusting Shims
42. Pressure Relief Valve Plug
43. Spring
44. Sealing Washer
45. Spring Seat
46. Valve Piston
47. Seal Washer
48. Valve Seat
49. olt
50. Retaining Ring
51. ypass Valve Spring
52. ypass all Valve
53. Seal Washer
54. Drain Plug
POWER STEERING PARTS LIST