Plymouth Plaza 1957 User manual

AA
11111131 piV 11M ND
PDF compression, OCR, web optimization using a watermarked evaluation copy of CVISION PDFCompressor

permoaa
SERVICE MANUAL
Model
P30 and P31
LP1 and LP2
DIAGNOSIS PROCEDURES
ADJUSTMENTS RECONDITIONING
LUBRICATION -MAINTENANCE
Price $3.50 Net
Postage Prepaid in United States
Order by Number P58-501
CHRYSLER CORPORATION
PLYMOUTH DIVISION
SERVICE DEPARTMENT
DETROIT 31, MICHIGAN
Litho in U.S.A.
20M 1-58 P58-501
QUICK REFERENCE INDEX
To find Sections, bend manual back
to locate black spots
SECTION
1 Front Suspension
2 Rear Axle
3 Brakes-Power
4Clutch
5 Wheels and Tires
Page
Brakes
21 00
39 100
59 1110
61 10
Universal Joints and
6Propeller Shaft 75 00
81 00
135 010
9Transmission-Overdrive-143 110
PowerFlite-TorqueFlite
7 Steering-Power Steering
Q Frame-Rear Springs-
%) Shock Absorbers
SECTION Page
1Engines-V-8 and
6 Cylinder
2 Ignition System
Starting System
4 Generating System
5 Cooling System
6 Fuel and Exhaust System
275
325
335
341 00
353 00
361
SECTION Page
1Body
2 Accessories
3 Air Conditioning
4Instruments-Gauges-
Horn-Windshield Wipers
5 Lighting System
405
443
451 00
477
489 00
SECTION Page
1 Lubrication-Maintenance
2 Wiring Diagram
Alphabetical Index
495
501
511 00
PDF compression, OCR, web optimization using a watermarked evaluation copy of CVISION PDFCompressor
MyMopar.com

!
PDF compression, OCR, web optimization using a watermarked evaluation copy of CVISION PDFCompressor
MyMopar.com

PLYMOUTH SERVICE MANUAL 3
7tee/4et4 POtito,w,d .5,ece.,.
Vceei,ea Oww,et Sawo,pewa
Customer confidence pays dividends over the years. Treating a customer's
car as you would your own makes an owner feel that you are rendering a
service, not simply selling a repair job. There's a great difference between an
honest desire to be of friendly service to a customer and a desire to simply
sell a job of service! A customer quickly recognizes the service man who takes
a personal interest in his welfare, and gets a feeling of confidence and
satisfaction that makes "habit" customers out of "now-and-then" customers.
Experience has shown that one of the best ways to create customer con-
fidence is to offer safety inspections and road tests as a part of your service
to the motorists in your community. Like other successful service men, you will
find that motorists appreciate rather than resent having your recommenda-
tions about what should be done to maintain safe vehicle operation.
There are over fifty-six million automotive vehicles in operation in the
United States. Every year as new vehicles are put into use, new inexperienced
drivers take the wheel, increasing the problem of handling traffic on our
streets and highways. There must be greater effort on the part of everyone
concerned to help keep these cars in safe operating condition. Much of the
responsibility falls on the shoulders of service men.
Service men have the responsibility of keeping motorists informed about
the overall condition of their vehicles-particularly those units upon which
the driver depends for safe operation.
Service men have the responsibility of educating drivers about the hazards
of driving an unsafe vehicle.
Service men have the responsibility of advising drivers about the need for
periodical safety-inspections.
Service men have the responsibility of keeping drivers informed about the
need for periodical safety maintenance.
Service men who accept these responsibilities and treat each customer's
car as though it were his own, will reap the benefits of customer confidence
and satisfaction.
PDF compression, OCR, web optimization using a watermarked evaluation copy of CVISION PDFCompressor
MyMopar.com

4PLYMOUTH SERVICE MANUAL
PLYMOUTH VEHICLE NUMBERS
MODEL Starting Vehicle Numbers
Detroit Evansville Los Angeles Newark
P-30 Plaza, Savoy, Belvedere 14,280,001 20,860,001 25,215,001 28,100,001
P-31 Plaza, Savoy, Belvedere 16,083,001 22,330,001 26,595,001 28,525,001
LP1 (6 cyl.) Plaza, Savoy, Belvedere LP1-1001 LP1E-1001 LP1L-1001 LP1N-1001
LP2 (8 cyl.) Plaza, Savoy, Belvedere LP2-1001 LP2E-1001 LP2L-1001 LP2N-1001
VEHICLE NUMBER LOCATION
The vehicle number (serial number) is located on a plate which is attached to
the left front face of the cylinder block.
ENGINE NUMBER LOCATION
The engine number is stamped on a boss on the left side at the front of the cylin-
der block on 6 cylinder engines. On 277,301 and 318 cu. in. V-8 engines, the
number is stamped on the left front face of the cylinder block. On 350 cu. in. V-8
engines, the number is stamped on the right side of cylinder block between the
coil and distributor.
BODY NUMBER LOCATION
The body number is stamped on a plate which is attached to the left side of the
engine side of the dash.
GENERAL DATA AND SPECIFICATIONS
Model -30andLP-1 P-31 LP-2
Number of Cylinders 6V-8
Bore and Stroke 31/4x45/9
in. 33/4x31/4 in. 32%2x31/8 .32%2 x 3%6 in. 4%6x33/4
in
Piston Displacement 230 cu. in. 277cu.in. 301 cu. in. 318 cu. in. 350 cu. in.
Compression Ratio 8.0 to 1 8.5 to 1 9.25 to 1 9.0 to 1 9.25 to 1 10.0 to 1
Maximum
Brake Horsepower 132 at
3600 rpm 197 at 4400 rpm 215 at 4400 rpm *235 at 4400 rpm 1-290 at 5400 rpm 225 at 4400 rpm *250 at 4400 rpm 1290 at 5200 rpm *305 at 5000 rpm
Taxable Horsepower 25.4 45.0 48.9 52.8
Maximum Torque 205 at
1600 270 at 2400 285 at 2800 305 at 2800 325 at 4000 330 at 2800 340 at 2800 330 at 3600 370 at 3600
Wheelbase 118 in. (122 in. Suburban Only)
Tread-Front 60.9 in.
Tread-Rear 59.6 in.
Overall Length 204.6 in.
Overall Width 78.2 in.
Turning Diameter 45.33 ft.
*Super-Pak frury *Golden Commando
PDF compression, OCR, web optimization using a watermarked evaluation copy of CVISION PDFCompressor
MyMopar.com

PLYMOUTH SERVICE MANUAL 5
9ofteulaftell
This Plymouth Service Manual has been prepared as a reference book of
complete service information for the 1957 and 1958 Plymouth models.
For convenience, the contents of the manual have been arranged in four
parts. Each part has been subdivided into sections. Each section contains charts
of data and specifications, adjustments and repair information, and diagnosis
procedures. A list of the subjects covered in each section will be found at the
beginning of the section. A complete alphabetical index appears in the back
of the manual.
To help diagnose the service needs of the Plymouth car, this manual con-
tains over 300 diagnosis procedures. In most instances it is advisable to make
a road test to verify the condition.
Throughout the manual, service data and specifications are given in chart
form. The clearances and specifications shown are based on the type of
equipment normally available for service work and do not in all cases
represent the manufacturing specifications.
This manual contains service information for units originally installed on
Plymouth cars as "special equipment." No attempt has been made to designate
such units as "special equipment" in this manual.
CHRYSLER CORPORATION
Plymouth Division
Service Department
Detroit, Michigan
PDF compression, OCR, web optimization using a watermarked evaluation copy of CVISION PDFCompressor
MyMopar.com

COTTERPIN
NUTRETAINER
WASHER
NUTCOTTERPIN---A
BUSHING
STRUT
RETAINER
BO LT-
SUPPORT BRACKET-_
BUSHING
UPPER CONTROL ARM
SHOCK ABSORBER
NUT
WASHER
BUSHING
SHAFT
SHIM
LOCKWASHERS SUPPORT BRACKET SWIVEL-04°
BOLT LOCK
LUBE FITTING
BALL JOINT-UPPER
BUSHING
NUTS
SHIM
NUT
BUMPER BUSHING-
WASHER'"
CAM
SEAT
TORSION BAR
SEAL-INNER
SEAL-OUTER
RETAINER
BUMPER
STEERING KNUCKLE
FLAT WASHER
NUTCOTTERPIN
NUTFLAT WASHER
COTTERPIN
BOLT
-SEAL
LOWER CONTROL ARM
LOCKWASHERS
NUT
oFBOLT
BOLT
BOLT
RETAINER
JOINT-LOWER
NUTS
WASHER LUBE FITTING
NUT
Figure 1-Front Suspension
58P 18
n cot
PDF compression, OCR, web optimization using a watermarked evaluation copy of CVISION PDFCompressor
MyMopar.com

PART ONE-CHASSIS
SECTION 1FRONT SUSPENSION SYSTEM
9Pages
Data and Specifications
1. General Information 7
2. Front Shock Absorbers 8
3. Ball Joints 10
4. Lower Control Arm 11
5. Upper Control Arm 12
6. Steering Knuckles 13
7. Lower Control Arm Strut 14
8. Torsion Bars 14
9. Checking Front Suspension Height 14
10. Front Wheel Alignment 15
11. Front Suspension Lubrication 18
12. Diagnosis Procedures 18
1. GENERAL INFORMATION
Torsion bar suspension used on Plymouth cars, con-
sists of two torsion bars (right and left hand), two sets of
upper and lower control arms, four ball joints and two
struts, used to position the lower control arms.
The front ends of the torsion bars engage the lower
control arms at the inner pivot points. The rear ends of
the bars engage adjustable anchor assemblies, which
are supported by brackets welded to the frame side rails,
as shown in Figure 2.
The inner end of the upper control arm has two rubber
bushings which are mounted in two brackets which are
bolted to the frame. The outer end of the upper control
arm is attached to the upper ball joint assembly, as
shown in Figure 3. Shim packs inserted between the
EXHAUST PIPE CROSSMEMBER ATTACHING BOLTS
TORSION BAR ANCHOR
LOCK RING
ADJUSTING BOLT
ANCHOR BRACKET
ORSION BAR PART NUMBER
FRAME CROSSMEMBER
CROSSMEMBER ATTACHING BOLT
Figure 2-Torsion Bar Rear Support Assembly
BRACKETS -UPPER CONTROL ARM
SHIM PACK
57P69 Figure 3-Upper Control Arm Mounting
AI LOWER CONTROL ARM SHAFT
STRUT BUSHING STRUT
57P71 LOWER CONTROL ARM
Figure 4-Lower Control Arm Mounting
7
57P70
PDF compression, OCR, web optimization using a watermarked evaluation copy of CVISION PDFCompressor
MyMopar.com

8CHASSIS
COTTER PIN SHAFT WASHERNUT TORSION
BAR
NUT ASHER
FRAME CROSSMEMBER
brackets and the frame side rails, establish the caster
and camber settings for each front wheel. See Figure 3.
The lower control arms are attached to the frame
crossmember by a pivot shaft and bushing assembly,
as shown in Figure 4. The pivot shafts are mounted in
replaceable rubber bushings, located at the rear of
number two crossmember. The shafts extend through
the crossmember and are secured by nuts and cotter-
pins, as shown in Figure 5.
The steering knuckles are connected to the upper and
COTTER PIN lower control arms by the ball joints, as shown in Figure
LOWER CONTROL ARM 6.
BUSHING 58P1 9 This eliminates the procedure of checking king pin
inclination. The term "steering axis inclination" will
hereafter be used.
Figure 5-Lower Control Arm Shaft and Bushing
*STEERING KNUCKLE
virUPPER CONTRO ARM BALL JOINT
STRUT MOUNTING BOLTS
LOWER CONTROL ARM BALL JOINT 57P68
Figure 6-Upper and Lower Control Arm Ball Joints
Figure 7-Lower Control Arm Strut Mounting
To maintain a fixed position in relation to fore and aft
movement of the lower control arm, a strut is attached
to the number one crossmember and to the lower control
arm on each side, as shown in Figures 4 and 7. The
forward ends of the struts are mounted in replaceable
rubber bushings, as shown in Figure 7. The rear end of
the struts are bolted securely to the lower control arm,
as shown in Figure 6.
The ball joints and the tie rod ends are the only points
in the new suspension requiring lubrication.
2. FRONT SHOCK ABSORBERS
REMOVAL
Remove dirt from around the shock absorber upper
mounting area, then raise front of vehicle off floor, to
release tension on torsion bars. Slide a 1/4 inch wrench
over the flats on the top of shock absorber piston rods,
to keep rod from turning. Now, remove nut and cup
washers.
57x71Figure 8-Removing or Installing Shock Absorber
Lower Bushing
PDF compression, OCR, web optimization using a watermarked evaluation copy of CVISION PDFCompressor
MyMopar.com

FRONT SUSPENSION 9
FRONT SUSPENSION SYSTEM
DATA AND SPECIFICATIONS
Models P-30, LP-1 P-31, LP-2
Type Torsion Bar-Independent Suspension
Camber Left wheel + 'A to 0 degrees (Ye degree preferred)
Right wheel + 1/2 to -1/2 degree (0 degree preferred
Caster Manual Steering 0 to - 11/2
Power Steering + 11/2 to 0
(Set left and right side the same)
Toe-In %2 inch to 5/32 inch (1/s inch preferred)
Toe-Out on Turns With inside wheel at 20 degrees, outside
wheel should be 171/2 to 19 degrees
Steering Axis Inclination 61/2 degrees
Tie Rods Symmetrical
Wheel Bearing Type Tapered Roller
Tread Front 60.9 inch
Rear 59.6 inch
Wheel Base 118 in. all except Suburban
122 in. Suburban
TORQUE SPECIFICATIONS
Upper Ball Joint Stud Nut 100 ft. lbs.
Lower Ball Joint Stud Nut 135 ft. lbs.
Upper Control Arm Inner Pivot Bushing Bolt Nut 55 ft. lbs.
Upper Control Arm Support Bracket Screw-Lower 50 ft. lbs.
Upper Control Arm Support Bracket Screw-Upper 70 ft. lbs.
Lower Control Arm Shaft Nut-Outer 180 ft. lbs.
Lower Control Arm Shaft Nut-Inner 125 ft. lbs.
Lower Control Arm Strut Bushing Nut 40 ft. lbs.
Lower Control Arm Strut Bolt Nut 65 ft. lbs.
Tie Rod Clamp Bolts 10 to 15 ft. lbs.
Remove shock absorber lower eye mounting bolt and Remove the lower mounting bushing from the shock
nut from mounting bracket. Push the shock absorber up absorber eye using Tool C-3553, as shown in Figure 8.
sufficiently to retract piston rod, then slide shock ab- Press bushing out of eye.
sorber down and out between lower control arm and
frame. The lower cup washer may remain in place or
drop through when shock absorber is removed. Place the lower mounting in position. Using Tool
Using a suitable drift, force the inner steel sleeve out C-3553, press bushing into shock absorber eye until
of bushing, then remove bushing from frame opening. centered.
Check bushing for deterioration or fatigue. Install new
bushing as required. Before installing new bushing, in-
sert steel sleeve then dip bushing in water. Place in
position on frame. Using a hammer and rod of suitable
size, drive bushing into opening of frame. When in-
stalled properly, the groove in bushing will index with
opening in frame.
INSTALLATION
CAUTION
Always press against steel sleeve to avoid dam-
age to the assembly.
PDF compression, OCR, web optimization using a watermarked evaluation copy of CVISION PDFCompressor
MyMopar.com