1993 CHEVROLET DYNASTY automatic transmission fluid

should be above ADD mark. Add fluid only if level is
below ADD mark on dipstick when transaxle is
warm.The automatic transaxle does not require periodic
maintenance when used for general transportation. If
the vehicle is subjected to severe service conditions,
the automatic transaxle will require fluid/filter
change and band adjustments every 24 000 km
(15,000 miles). For additional information, refer to
Severe Service paragraph and Lubrication and Main-
tenance Schedules in General Information section of
this group. The fluid and filter should be changed
when water contamination is suspected. If fluid has
foamy or milky appearance, it is probably contami-
nated. If the fluid appears brown or dark and a foul
odor is apparent, the fluid is burned, transaxle re-
quires maintenance or service. A circular magnet lo-
cated in the transaxle pan, collects metallic particles
circulating in the oil. For proper diagnostic and ser-
vice procedures, refer to Group 21, Automatic Tran-
saxle.
SELECTING AUTOMATIC TRANSAXLE FLUID
Chrysler Corporation recommends Mopar ATF Plus
(automatic transmission fluid type 7176) be used to
add to or replace automatic transaxle fluid. If ATF
Plus is not available use Mopar Dexron II tAuto-
matic Transmission Fluid or equivalent.
DRIVE SHAFT CV AND TRIPOD JOINT BOOTS
The front drive shaft constant velocity and tripod
joint boots (Fig. 5) should be inspected when other
under vehicle service is performed. Inspect boots for
cracking, tears, leaks or other defects. If service re-
pair is required, refer to Group 2, Suspension.
FRONT WHEEL BEARINGS
The front wheel bearings are permanently sealed,
requiring no lubrication. For proper diagnostic and
service procedures refer to Group 2, Suspension.
TIRES
The tires should be inspected at every engine oil
change for proper inflation and condition. The tires
should be rotated at the distance intervals described
in the Lubrication and Maintenance Schedules of the
General Information section in this group. For tire
inflation specifications refer to the Owner's Manual.
A Tire Inflation sticker is located in the driver door
opening. For proper diagnostic procedures, see Group
22, Wheels and Tires.Fig. 2 3-speed Automatic Transaxle Fill hole
Fig. 3 4-speed Automatic Transaxle Fill tube
Fig. 4 Automatic Transaxle DipstickÐTypical
Fig. 5 Drive Shaft Boots
Ä LUBRICATION AND MAINTENANCE 0 - 17

(2) Remove radiator pressure cap when engine is
cold, Idle engine until thermostat opens, you should
observe coolant flow while looking down the filler
neck. Once flow is detected install radiator pressure
cap.
RADIATOR
REMOVAL
(1) Disconnect negative battery cable from battery.
WARNING: DO NOT REMOVE THE CYLINDER
BLOCK PLUG OR THE RADIATOR DRAINCOCK
WITH THE SYSTEM HOT AND UNDER PRESSURE
BECAUSE SERIOUS BURNS FROM COOLANT CAN
OCCUR.
(2) Drain cooling system. Refer to Draining Cool-
ing System of this section. (3) Remove hose clamps and hoses from the radia-
tor (Fig. 11). Remove coolant reserve system tank to
filler neck tube. (4) Remove automatic transmission hoses, if
equipped. (5) Remove fan and fan support assembly by dis-
connecting fan motor electrical connector. Remove
fan shroud retaining clips, located on the top and
bottom of the shroud for AA, AG, AJ and AP vehi-
cles. AC/AY vehicle retainer clips are located on the
top only. Lift shroud up and out of bottom shroud at-
tachment clips separating shroud from radiator. Fan
damage should always be avoided. (6) Remove upper radiator mounting screws. Dis-
connect the engine block heater wire if equipped. (7) Remove the air conditioning condenser attaching
screws located at the top front of the radiator,if
equipped. Radiator can now be lifted free from engine compart-
ment. Care should be taken not to damage radia-
tor cooling fins or water tubes during removal.
INSTALLATION
(1) Slide radiator down into position behind radiator
support (yoke). (2) Attach air conditioning condenser to radiator, if
equipped, with a force of approximately 10 lbs. to seat
the radiator assembly lower rubber isolators in the
mount holes provided. (3) Tighten radiator mounting screws to 11.9N Im
(105 in. lbs.). (4) Connect automatic transmission hoses, if
equipped. Tighten hose clamps to 4 N Im (35 in. lbs.).
(5) Slide fan shroud, fan and motor down into clips
on lower radiator flange. Replace shroud retaining
clips. (6) Install upper and lower radiator hoses (including
coolant reserve hose). (7) Connect fan motor electrical connection and con-
nect negative battery cable. (8) Fill cooling system with coolant. Refer to Refill-
ing Cooling Systems. in this group.
(9) Operate engine until it reaches normal operating
temperature. Check cooling system and automatic
transmission for correct fluid levels.
Fig. 11 Cooling ModulesÐAll Models
7 - 20 COOLING SYSTEM Ä

Wiring Diagram
Name Sheet Number
RS Amplifier ......................... .122, 123
Electronic Cluster ........................ .99, 100
Data Link Connector ....................... .100
Electronic Cluster Printed Circuit Board Connector .......201
Electronic Fuel Pump and Gauge System ..............36
Electronic Vehicle Information Center Connector ........189
Electronic Vehicle Information Center Engine Compartment Sensors ...................... .97, 98
Brake Fluid Level Sensor ......................98
Coolant Level Sensor .........................98
Data Link Connector .........................97
EVIC Engine Node ...........................98
Engine Air Conditioning and Heater System (3.0L, 3.3L & 3.8L Engine) ................55
A/C and Heater Blower Motor Resistor ..............55
A/C Blower Motor ...........................55
A/C Low Pressure Switch ......................55
A/C Switch ...............................55
A/C Variable Output Compressor Clutch .............55
Blower Switch .............................55
Defrost Switch .............................55
Illumination Lamps ..........................55
Engine Coolant Temperature Sending Unit ........30, 31, 32
Engine Coolant Temperature Sensor ..............19, 25
Engine Oil Level Sensor ..................... .31, 32
Engine Oil Pressure and Temperature Warning System (2.5L) .............................30
Engine Coolant Temperature Sending Unit ............30
Engine Oil Pressure Switch .....................30
Engine Oil Pressure and Temperature Warning System (3.0L) .............................31
Engine Coolant Temperature Sending Unit ............31
Engine Oil Level Sensor .......................31
Engine Oil Pressure Sending Unit/Switch ............31
Engine Oil Pressure and Temperature Warning System (3.3L & 3.8L) .............................32
Engine Coolant Temperature Sending Unit ............32
Engine Oil Level Sensor .......................32
Engine Oil Pressure Sending Unit/Switch ............32
Engine Starter System (2.5L) .....................12
Automatic Park/Neutral Start Switch ...............12
Back-Up Lamp Switch ........................12
Engine Starter Motor .........................12
Engine Starter Relay .........................12
Transmission Solenoid ........................12
Engine Starter System (3.0L, 3.3L & 3.8L) .............13
Engine Starter Motor .........................13
Engine Starter Relay .........................13
Electronic Fuel Pump and Gauge System ..............36
Fuel Pump Motor ...........................36
Fuel Pump Relay ...........................36
Fuel Tank Level Gauge Sending Unit Fuel Switch .......36
EVAP/Purge Solenoid .................... .15, 20, 27
Fan Control Relay ......................... .52, 54
Front End Lighting-Aero Headlamps (Dodge Dynasty) . . .69, 70 Left Headlamp (Aero) .........................70
Left Park/Turn Signal Lamp .....................70
Left Side Marker Lamp ........................70Wiring Diagram
Name Sheet Number
Right Headlamp (Aero) ........................69
Right Park/Turn Signal Lamp ....................69
Right Side Marker Lamp .......................69
Front End Lighting-Aero Headlamps with Daytime Running Lights (Dodge Dynasty) .................... .71, 72
Daytime Running Lamp Module ..................72
Left Headlamp (Aero) .........................72
Left Park/Turn Signal Lamp .....................72
Left Side Marker Lamp ........................72
Right Headlamp (Aero) ........................71
Right Park/Turn Signal Lamp ....................71
Right Side Marker Lamp .......................71
Front End Lighting Concealed Headlamps (Imperial) . . . .73, 74
Left Cornering Lamp .........................74
Left High Beam Headlamp ......................74
Left Low Beam Headlamp ......................74
Left Park Lamps ............................74
Left Park/Turn Signal Lamp .....................74
Left Side Turn Lamp .........................74
Right Cornering Lamp ........................73
Right High Beam Headlamp .....................73
Right Low Beam Headlamp .....................73
Right Park Lamps ...........................73
Right Park/Turn Signal Lamp ....................73
Right Side Turn Lamp ........................73
Front End Lighting Concealed Headlamps with D.R.L.1 (Imperial) .......................... .75, 76, 77
Daytime Running Lamp Module ..................76
Left Cornering Lamp .........................77
Left High Beam Headlamp ......................77
Left Low Beam Headlamp ......................77
Left Park Lamps ............................77
Left Park/Turn Signal Lamp .....................77
Left Side Turn Lamp .........................77
Right Cornering Lamp ........................75
Right High Beam Headlamp .....................75
Right Low Beam Headlamp .....................75
Right Park Lamps ...........................75
Right Park/Turn Signal Lamp ....................75
Right Side Turn Lamp ........................75
Front End Lighting Concealed Headlamps with D.R.L.2 (Imperial) .......................... .78, 79, 80
Daytime Running Lamp Module ..................79
Left Cornering Lamp .........................80
Left High Beam Headlamp ......................80
Left Low Beam Headlamp ......................80
Left Park Lamps ............................80
Left Park/Turn Signal Lamp .....................80
Left Side Turn Lamp .........................80
Right Cornering Lamp ........................78
Right High Beam Headlamp .....................78
Right Low Beam Headlamp .....................78
Right Park Lamps ...........................78
Right Park/Turn Signal Lamp ....................78
Right Side Turn Lamp ........................78
Front End Lighting Concealed Headlamps (New Yorker/5th Avenue) .............................. .81, 82
Ä WIRING DIAGRAMS AC-AY BODY 8W - 315

Wiring Diagram
Name Sheet Number
Left Side Marker Lamp ...................... .163
Right Back-Up Lamp ....................... .164
Right Center High Mounted Stop Lamps ............164
Right Inboard Tail, Stop & Turn Signal Lamp .........164
Right License Lamp ........................ .164
Right Outboard Tail, Stop & Turn Signal Lamp ........164
Right Side Marker Lamp ..................... .164
Recliner Position Sense Resistor ..................154
Relay Bank ............................... .171
Relay Module ............................. .171
Relays ABS System Relay ..........................47
A/C Compressor Clutch .................54, 56, 113
Air Suspension .............................42
Automatic Shut Down .................. .15, 23, 29
Automatic Load Leveling .......................40
Back-Up Lamp .............................33
Door Lock/Unlock ......................... .140
Engine Starter .......................... .12, 13
Fan Control ............................. .114
Fuel Pump ...............................36
Horn ...................................63
Headlamp ................................68
Headlamp Door ............................68
Park Lamp .............................. .125
Power Antenna/Name Brand Speaker Relay ..........118
Pump and Motor Relay .......................46
Radiator Fan Control Relay A/C ................54, 56
Radiator Fan Relay ATC ..................... .114
Radiator Fan Relay-Heater ......................52
Safety Shut Down ...........................35
Yellow Lamp Relay ..........................49
Remote Keyless Entry ..................... .141, 142
Program Module .......................... .141
Remote Keyless Entry Module ...............141, 142
Right Body to Instrument Panel Wiring ...........192, 193
Right Front Wheel Sensor .......................50
Right Rear Wheel Sensor ........................50
RS Amplifier ........................... .122, 123
Safety Shut Down Relay ........................35
Seat Belt Warning System .......................67
Seat Belt Switch .............................67
Seat Track Position Sense Resistor .................154
Security Alarm Module Connector (Elec Cluster) ........202
Security Alarm Module Connector (Mech Cluster) ........203
Security Alarm System (Electronic Cluster) ........135, 136,
137, 138
Deck Lid Key Cylinder ...................... .135
Data Link Connector ....................... .136
Left Door Key Cylinder ...................... .135
Relay Bank ............................. .138
Relay Module ............................ .137
Right Door Key Cylinder ..................... .135
Security Alarm Hood Switch ...................136
Security Alarm Module .............135, 136, 137, 138
Security Lamp ........................... .136Wiring Diagram
Name Sheet Number
Security Alarm System (Mech Cluster w/VMC) ......127, 128,
129, 130
Deck Lid Key Cylinder ...................... .127
Data Link Connector ....................... .130
Left Door Key Cylinder ...................... .127
Relay Bank ............................. .130
Relay Module ............................ .129
Right Door Key Cylinder ..................... .127
Security Alarm Hood Switch ...................128
Security Alarm Module .............127, 128, 129, 130
Security Lamp ........................... .128
Security Alarm System (Mech Cluster w/o VMC) . . . .131, 132,
133, 134
Deck Lid Key Cylinder ...................... .131
Data Link Connector ....................... .134
Left Door Key Cylinder ...................... .131
Relay Bank ............................. .134
Relay Module ............................ .133
Right Door Key Cylinder ..................... .131
Security Alarm Hood Switch ...................132
Security Alarm Module .............131, 132, 133, 134
Security Lamp ........................... .132
Sensors Airbag Sensor .............................58
Ambient Sensor .......................... .117
Brake Fluid Level Sensor ......................98
Camshaft Position Sensor ......................28
Coolant Level Sensor .........................98
Crankshaft Position Sensor .....................28
Engine Coolant Temperature Sensors ..........17, 19, 25
Engine Oil Level Sensor .................... .31, 32
Heated Oxygen Sensors ................. .14, 19, 25
Height Sensors ............................44
In Car Senso r............................ .115
Left Front Wheel Sensor .......................50
Left Rear Wheel Sensor .......................50
MAP Sensors ........................ .18, 21, 26
Right Front Wheel Sensor ......................50
Right Rear Wheel Sensor ......................50
Sun Sensor ............................. .115
Throttle Position (Sensors) ................18, 21, 26
Transmission Output Speed Sensor ................34
Turbine Speed Sensor ........................34
Vehicle Speed Sensor .................. .17, 19, 25
Water Sensor ............................ .117
Windshield Washer Low Fluid Level Sensor ...........61
Solenoids Air Exhaust-Automatic Load Leveling Solenoid .........42
Air Suspension Solenoid ................... .41, 44
Deck Lid Release Solenoid ................... .159
EVAP/Purge Solenoids .................. .15, 20, 27
Exhaust Gas Recirculation Solenoids ..........14, 21, 26
Transmission Solenoid .................... .12, 35
Transmission TCC LU Solenoid ..................12
Splices Splice A1 ...........................4,6,8,10
Splice A3 .........................2,37,59,66
Splice A3-1 .....................2,6,8,10,69,71
Ä WIRING DIAGRAMS AC-AY BODY 8W - 319

Wiring Diagram
Name Sheet Number
Right Tail Lamp .......................... .131
Right Tail, Stop & Signal Lamps .................131
Rear Lighting w/Lamp Outage (AJ) .......136, 137, 138, 139
Lamp Outage Module ....................... .138
Left Back-Up Lamp ........................ .137
Left Side Marker Lamp ...................... .136
Left Tail Lamp ........................... .136
Left Tail/Stop Lamps ....................... .136
License Lamps ........................... .137
Right Back-Up Lamp ....................... .138
Right Side Marker Lamp ..................... .139
Right Tail Lamp .......................... .138
Right Tail/Stop ........................... .139
Turn Lamp .......................... .136, 139
Rear Lighting without Lamp Outage ......132, 133, 134, 135
Left Back-up Lamp ........................ .133
Left Side Marker Lamp ...................... .132
Left Tail/Stop Lamp ........................ .132
Left Tail Lamp ........................... .132
License Lamp ............................ .133
Right Back-Up Lamp ....................... .134
Right Side Marker Lamp ..................... .135
Right Tail Lamp .......................... .134
Right Tail/Stop Lamp ....................... .135
Turn Lamp .......................... .132, 135
Relay Block ..................... .60, 162, 163, 164
Relays ABS Pump Motor Relay .......................68
ABS System Relay ..........................69
A/C Compressor Clutch Relay ...................91
ADL Relay .............................. .115
Automatic Shut Down Relay ...............20, 27, 33
Backup Lamp Relay ..........................38
Diode Package Relay ..................... .56, 83
Engine Starter Relay ................... .13, 14, 15
Fan Control Relay ...........................89
Fog Lamp Relay ............................55
Fuel Pump Relay .......................... .108
High Beam Relay ..........................6,53
Horn Relay ...............................65
Left Front Turn Signal Relay ....................57
Left Rear Turn Signal Relay .....................57
Low Beam Relay ..........................6,53
Name Brand Speaker Relay .....................60
Park Lamp Relay ..........................5,53
Power Top Relay ...........................96
Right Front Turn Signal Relay ...................57
Right Rear Turn Signal Relay ....................57
Safety Shut Down Relay .......................36
Washer Relay .............................66
Resistors .............................. .90, 93
A/C and Heater Blower Motor Resistor ..............90
Heater Blower Motor Resistor ...................93
Right Instrument Panel to Body Wiring ...........148, 149
RS Amplifier ............................ .63, 64
RS Amplifier Connectors ...................... .159
Security Alarm Module .................... .127, 172Wiring Diagram
Name Sheet Number
Security Alarm System ....................... .127
Sending Unit, Fuel Tank ....................... .107
Sensors Airbag Sensor .............................85
Ambient Air Temperature Sensor .............117, 119
Brake Fluid Level Sensor ......................72
Camshaft Position Sensor ......................30
Charge Air Temperature Sensor ..................32
Crankshaft Position Sensor .....................33
Coolant Level Sensor .........................72
Engine Coolant Temperature Sensor ..........21, 26, 32
Engine Oil Level Sensor .......................41
Heated Oxygen Sensor .................. .17, 24, 32
Knock Sensor .............................33
Left Front Wheel Sensor .......................71
Left Rear Wheel Sensor .......................71
MAP Sensor ........................ .18, 29, 30
Output Speed Sensor .........................39
Right Front Wheel Sensor ......................71
Right Rear Wheel Sensor ......................71
Throttle Position (Sensor) .................17, 27, 34
Turbine Speed Sensor ........................39
Vehicle Speed Sensor .................. .21, 25, 35
Windshield Washer Low Fluid Level Sensor ...........67
Solenoids Barometer ................................30
EMCC Solenoid ............................13
EVAP/Purge Solenoid ................... .18, 29, 30
Exhaust Gas Recirculation Diagnostic Solenoid ......18, 24
Transmission Solenoid ........................36
Waste Gate Solenoid .........................30
Speakers .......................... .61, 62, 63, 64
Splices Splice A3 .......................... .10, 12, 53
Splice A11 ............................ .10, 12
Splice A21-1 ...................... .11, 20, 25, 33
Splice A21-2 ..............................38
Splice A142 ........................9,27,28,32
Splice A142-1 .................. .10, 12, 19, 23, 32
Splice A142-2 .............................28
Splice A142-3 .......................... .28, 31
Splice B47 ...............................69
Splice C7 ............................. .90, 93
Splice C15 ...........................8,94,95
Splice D1 ...................... .77, 86, 117, 119
Splice D1-1 ........................... .29, 86
Splice D2 ...................... .77, 87, 117, 119
Splice D2-1 ........................... .29, 87
Splice E2 .......................... .51, 52, 87
Splice E17 ...............................51
Splice F12-1 ...................9,11,18,19,25,32
Splice F12-2 ...................... .11, 18, 29, 30
Splice F13 ................................67
Splice F20 .........................8,84,92,96
Splice F21-2 ......................... .110, 111
Splice F30 ...................... .60, 84, 88, 127
Splice F35-1 ......................... .113, 115
8W - 538 WIRING DIAGRAMS AG-AJ BODY Ä

Wiring Diagram
Name Sheet Number
Right Rear Motor ...........................58
Right Rear Switch ...........................58
Printed Circuit Board ....................... .74, 75
Printed Circuit Board Connectors ...................73
Radiator Fan Fuse ......................... .45, 50
Radio Speakers-Door and Rear ....................66
Radio-Stereo ................................65
Name Brand Speaker Relay .....................65
Rear Lighting ....................... .69, 70, 71, 72
Back-Up Lamps .................... .69, 70, 71, 72
Center High Mounted Stop Lamps ..............70, 72
Courtesy Lamps ............................72
License Lamps ......................... .70, 72
Side Marker Lamps ................. .69, 70, 71, 72
Tail, Stop and Turn Signal Lamps .........69, 70, 71, 72
Relay Module ...............................77
Relays ABS System Relay ..........................28
A/C Compressor Clutch Relay ...................50
ABS Yellow Light Relay .......................28
ABS Pump Motor Relay .......................27
Automatic Shut Down ....................2,14,22
Back-Up Lamp Relay .........................23
Engine Starter Relay ....................7,8,9,10
Fuel Pump ............................ .14, 22
Horn ...................................42
Fan Control Relay ....................... .45, 50
Name Brand Speaker .........................65
Safety Shut Down Relay .......................25
Time Delay ...............................44
Right Front Wheel Sensor .......................26
Right Instrument Panel Interface ...................89
Right Rear Wheel Sensor ........................26
Seat Belt Warning System and Courtesy Lamps .......43, 44
Halo Lamp ...............................44
Seat Belt Warning Chime ......................43
Seat Belt Switch ............................44
Time Delay Relay ...........................44
Seat-Power System, Left ........................60
Sensors ABS Wheel Sensors ..........................26
A/C Ambient Temperature Sensor .................41
Airbag ..................................35
Engine Coolant Temperature ..................15, 18
Heated Oxygen ......................... .17, 18
MAP ................................ .15, 20
Output Speed Sensor .........................24
Throttle Position ........................ .16, 20
Turbine Speed .............................24
Vehicle Speed Sensor ..................... .15, 18
Washer Low Fluid Sensor ......................53
Solenoids EVAP/Purge Solenoid ..................... .13, 19
Exhaust Gas Recirculation .................. .13, 20
Transmission EMCC Solenoid ....................8
Transmission Solenoid ........................25
Speakers, Radio ..............................66Wiring Diagram
Name Sheet Number
Splices Splice A0-1 ...........................1,2,4,6
Splice A0-2 ............................2,4,6
Splice A1 ..............................2,4,6
Splice A2 ..............................2,4,6
Splice A3 ..............................1,36
Splice A3-1 ............................1,4,6
Splice A4 ..............................2,3,5
Splice A4-1 ............................2,4,6
Splice A11 .............................1,4,6
Splice A14 .............................2,4,6
Splice A14-1 ..............................14
Splice A14-2 ..............................22
Splice A15 .............................1,3,5
Splice A15-1 ...........................1,3,5
Splice A16 .............................2,4,6
Splice A20 ...............................28
Splice A21 ...............................11
Splice A21-1 ..........................2,13,21
Splice A21-2 ........................... .13, 21
Splice A21-3 ..............................23
Splice A142-1 .............................14
Splice A142-2 ..........................4,6,14
Splice B47 ...............................28
Splice C7 ............................. .46, 48
Splice D1 ................................24
Splice D2 ................................24
Splice E2 .............. .31, 33, 37, 41, 46, 47, 65, 67
Splice E2-1 ............ .31, 33, 37, 41, 46, 47, 65, 67
Splice F20 .......................... .35, 41, 67
Splice F20-1 .........................7,8,9,23
Splice F30 .......................... .35, 42, 65
Splice F35 ............................ .61, 63
Splice G5 ............................. .35, 43
Splice G7 .......................... .15, 18, 30
Splice K4 ................................15
Splice K4-1 ........................... .15, 18
Splice K4-2 ........................... .19, 20
Splice K6 ............................. .16, 20
Splice K7-1 ........................... .15, 18
Splice K22 ...............................20
Splice K24 ...............................18
Splice L3 ............................. .31, 33
Splice L4 ............................. .31, 33
Splice L7-1 ........................... .32, 34
Splice L7-2 ........................... .31, 33
Splice L7-3 ...............................36
Splice L7-4 ........................... .69, 71
Splice L7-5 ........................... .31, 33
Splice L20 ..............................1,36
Splice L39 ............................ .31, 33
Splice L50 ...............................52
Splice L60 ............................ .31, 33
Splice L60-1 ..............................52
Splice L61 ............................ .32, 34
Splice L61-1 ..............................52
Splice M1-1 ...................... .39, 44, 55, 65
8W - 720 WIRING DIAGRAMS AP BODY D-P Ä

STEERING
CONTENTS
page page
ACUSTAR STANDARD AND TILT STEERING COLUMN ............................ 28
AUTOMATIC TRANSMISSION SHIFTER/IGNITION INTERLOCK .......................... 36
GENERAL INFORMATION .................. 1 POWER STEERING GEAR
................ 25
POWER STEERING PUMPS ................ 1
SPECIFICATIONS AND TIGHTENING REFERENCE .......................... 42
GENERAL INFORMATION
Safety goggles should be worn at all times
when working on any steering gear or pump. Throughout this group, references may be made to
a particular vehicle by letter or number designation.
A chart showing the breakdown of these designations
is included in the Introduction Section at the front of
this service manual. The power steering system consists of these four
major components. Power Steering Pump, Power
Steering Gear, Pressure Hose, and Return Line.
Turning of the steering wheel is converted into lin-
ear travel through the meshing of the helical pinion teeth with the rack teeth. Power assist steering is
provided by an open center, rotary type control valve.
It is used to direct oil from the power steering pump
to either side of the integral steering rack piston. Road feel is controlled by the diameter of a torsion
bar which initially steers the vehicle. As steering ef-
fort increases as in a turn, the torsion bar twists,
causing relative rotary motion between the rotary
valve body and valve spool. This movement directs
oil behind the integral rack piston, which in turn,
builds up hydraulic pressure and assists in the turn-
ing effort.
POWER STEERING PUMPS
INDEX
page page
Checking Power Steering Fluid Level .......... 9
Flow Control Valve Fitting O-Ring Seal ........ 23
General Information ........................ 1
Power Steering Hoses ..................... 11
Power Steering Pressure Switch ............. 10
Power Steering Pump Fluid Reservoirs ........ 22 Power Steering Pump Pressure Test
........... 9
Power Steering Pump Pulley Service .......... 20
Power Steering Pump Removal .............. 12
Power Steering Pump Service ................ 2
Power Steering PumpÐInitial Operation ....... 24
Steering Components Service Diagnosis ........ 2
GENERAL INFORMATION
Hydraulic pressure for operation of the power
steering gear is provided by a belt driven power
steering pump. The power steering pump is a con-
stant flow rate and displacement, vane type pump.
Different styles of Saginaw power steering pumps are
used depending on the engine application of the ve-
hicle. On all four cylinder and 3.0-liter V-6 applications
the Saginaw Ham Can power steering pump is used
(Fig. 1). On the 3.3 & 3.8-liter V-6 and Turbo III applica-
tions, different versions of the Saginaw T/C style
power steering pump is used (Fig. 2). The 3.3 & 3.8 liter V-6 engine application uses the T/C style power
steering pump with a remote mounted reservoir for
the power steering fluid. On the Turbo III application
of the T/C style power steering pump, the power
steering fluid reservoir is integral to the power steer-
ing pump. On the integral reservoir type pump (Fig. 1) the
pump housing and internal components are combined
with the reservoir to form a one-piece mechanism. The Saginaw T/C style power steering pump (Fig.
2), consists of the power steering pump internal com-
ponents and pump housing. The Saginaw T/C style
power steering pump though has no internal reser-
voir for the power steering fluid. Depending on vehi-
Ä STEERING 19 - 1

When steering conditions exceed maximum pres-
sure requirements, such as when the wheels are
turned against the stops. The pressure built up in
the steering gear exerts pressure on the spring end of
the flow control valve. The high pressure lifts the re-
lief valve ball from its seat and allows oil to flow
through a trigger orifice located in the outlet fitting.
This reduces pressure on the spring end of the flow
control valve which then opens and allows the oil to
return to the intake side of the pump. This action
limits maximum pressure output of the pump to a
safe level. Under normal power steering pump operating con-
ditions, pressure requirements of the pump are below
maximum, causing the pressure relief valve to re-
main closed.
CHECKING POWER STEERING FLUID LEVEL
WARNING: FLUID LEVEL SHOULD BE CHECKED
WITH ENGINE OFF TO PREVENT INJURY FROM
MOVING PARTS. DO NOT USE AUTOMATIC TRANS-
MISSION FLUID IN THE POWER STEERING SYS-
TEM. DO NOT OVERFILL THE POWER STEERING
SYSTEM.
Wipe reservoir filler cap free of dirt, before check-
ing power steering fluid level. The dipstick should in- dicate FULL COLD when fluid is at normal ambient
temperature, approximately 21ÉC to 27ÉC (70ÉF to
80ÉF). In all pumps add fluid as necessary to obtain
proper level, using only MopartPower Steering
Fluid, or equivalent. DO NOT USE ANY TYPE
OF AUTOMATIC TRANSMISSION FLUID.
POWER STEERING PUMP PRESSURE TEST
The following procedure can be used to test the op-
eration of the power steering system on the vehicle. (1) Check power steering pump drive belt tension
and adjust as necessary. (2) Disconnect power steering fluid pressure hose,
at steering gear or power steering pump. Use a con-
tainer for dripping fluid. (3) Connect Pressure Gauge, Special Tool C-3309-E
(Fig. 1) to both hoses using adapter fittings. Connect
spare pressure hose to gear or pump. (4) Completely open valve on Special Tool
C-3309-E (Fig. 1). (5) Start engine and let idle.
(6) Check power steering fluid level, and add fluid
as necessary. (7) Gauge should read below 862 kPa (125 psi), if
above, inspect the hoses for restrictions and repair as
necessary. The initial pressure should be in the
range of 345-552 kPa (50-80 psi).
PUMP LEAKAGE DIAGNOSIS
Ä STEERING 19 - 9