FRONT WHEEL SUSPENSION
Contents
1. Frame bent Straighten frame and check alignment Bent steering knuckle Replace as required 23 EXCESSIVE PLAY OR LOOSENESS IN STEERING SYSTEM Loose stabilizer Tighten bolts torque to proper Worn or loose front wheel bearings Re place or adjust as required Worn ball joints Replace as required Worn upper or lower control arm bushings Replace as required Worn tie rod ends Replace as required 24 FRONT WHEEL SHIMMY Uneven tire pressure lInflate to proper pres sure Worn or loose front wheel bearings Replace or adjust as required FRONT WHEEL SUSPENSION 23 Inoperative shock absorber Replace as re quired Worn ball joints or tie rod ends Replace as required Worn upper or lower control arm bushings Replace as required Loose or worn strut mounting bushings Tighten to proper torque or replace bushings Incorrect front end alignment Check and adjust front end alignment Loose or bent steering knuckle Tighten or replace Wheels and tires out of balance Balance wheels and tires Excessive wheel and tire runout Correct as necessary 25 CAR PULLS TO ONE SIDE Low or uneven tire pressure inflate to proper pressure Rear wheels are not tracking with front wheels Check alignment to determine cause and correct as necessary Brake dragging Adjust brakes Inoperative shock absorber Replace as re quired Incorrect front wheel alignment Ch2. LOWER CONTROL ARM Fig 32 Installing Lower Control Arm Pivot Bushing b Assembly Position new bushing flanged end of bushing first on shaft and install washer and nut Tighten nut 100 to 150 foot pounds torque and install cotter pin With lower control arm supported install shaft and bushing assembly by using Tool C 3557 and pressing bushing into the lower con trol arm until flanged portion of bushing is seated all the way into control arm Install lock ring making sure it is seated properly in the ring groove Install torsion bar spring cushion in control arm Install lower contro arm Refer to Lower Control Arm Installation Para graph 13 15 UPPER CONTROL ARM SUPPORT MOUNTING BRACKETS The upper control arm support mounting brack ets are bolted to the frame side rails and should not be removed unless they have been damaged due to accident etc When removing the mount ing brackets extreme care should be taken so not to lose the alignment shim pack located between the bracket and frame side rail In event a shim pack is lost a selection of shims 54g inch thick may be used as a starting point when reassembling 16 FRONT WHEEL BEARING END PLAY ADJUSTMENT A new front wheel bearing adjusting nut and lock is used on the 1957 cars to provide greater 22 FRONT WHEEL SUSPENSION GREASE CAP THRUST WASHER STEERING KNUCKLE BEARING CUP HUB SEAL dd EARING CONE 57x309 BEARING CUP
3. Refer to Fig 20 Shim may be changed at either front or rear bracket to change the caster setting or equally at both brackets to change camber The removal of shims at the rear bracket or addition of shims to front bracket will decrease positive caster One shim 4 inch will change caster approximately 34 The addition of shims at both front and rear support brackets will decrease positive camber One shim Mg inch at each bracket will change camber ap proximately 14 Caster and camber adjust ments are made as follows Remove load from upper control arms and frame bracket by placing a jack under lower control arm as near to the front wheel as pos sible Raise car off floor Loosen upper control arm support bracket bolts and add or remove shims as required as shown in Figure 20 Re tighten bolts remove jack and bounce front of vehicle to allow car to assume its normal op erating position before checking wheel align ment The total thickness of the shim pack at either of the support brackets should NOT exceed 945 inch 4 ADJUSTING FRONT WHEEL TOE IN Toe In means that wheels are closer together 4 FRONT 4 GROUND MARK TIRES HERE Fig 21 Front Wheel Toe in FRONT WHEEL SUSPENSION 15 Fig 22 Steering Geometry on Turns at front than they are at rear To measure spin front wheels and scribe a thin line in center of tread of each tire Fig 21 Jounce front end up and down several times
4. and position wheels in straight ahead position Gauge and scriber Tool C 695 can be used for scribing tire treads and measuring toe Measure distance at hub height between points A and B Fig 21 The distance between point B should be 4 inch less than distance e tween point A To adjust toe lengthen or short HAIR LINE ON ZERO POINTER ON CRATCH MARK TURNTABLE LOCK PIN 754x247 Fig 23 Gauge C 3409 and Turntable DD 435 on Right Wheel 16 FRONT WHEEL SUSPENSION en the tie rods an equal amount until the wheels toe in 14 inch plus or minus 45 inch V4 inch preferred and recheck measurements at points A and B NOTE The steering wheel hub steering gear arm steering tube and steering gear roller shaft are machined with master serrations to place front wheels straight ahead when steering wheel is in center position Do not alter these serrations to change position of these parts Improper position of steering wheel must be corrected by adjusting tie rod lengths Toe out turns When car makes a turn front wheels travel in circles which have a common center Fig 22 The arc of circle traveled by the inside front wheel is smaller than arc of circle traveled by outside front wheel Consequently when turned to right or left the wheels will be far ther apart at front than at rear The amount that front wheels toe out depends upon how far they are turned With front wheels on turntables set ri
5. ball joint threads en gage those of the control arm squarely With the lubrication fitting removed screw ball joint into control arm as far as possible by hand Using Tool C 8461 tighten until ball joint housing is seated on control arm Tighten to a minimum of 250 foot pounds torque Slide seal and dust cover up into position over stud and position stud in steering knuckle Install washer and nut Tighten 135 foot pounds torque Install cotter pin and lubrication fitting Lubricate ball joint with a good grade of chas sis lubricant c Removal of Lower Ball Joint Raise wheel off floor supporting weight under STEERING Fig 28 Removing Lower Ball Joint CHRYSLER SERVICE MANUAL the lower control arm allowing enough clear ance to remove lower ball joint and remove wheel and tire assembly Remove upper and lower ball joint stud nuts install Tool C 3564 Fig 28 as described in Upper Ball Joint Removal Paragraph 9 procedure Rap knuckle at stud boss sharply with a hammer to loosen stud To avoid damaging stud do not attempt to hammer stud out of knuckle Remove grease fitting using Tool C 3561 screw out ball joint NOTE When installing new hall joint it is very important that the ball joint threads engage those of the control arm squarely d Installation of Lower Ball Joint To reinstall screw bal joint into control arm as far as possible by hand Using Tool C 3561 tighten until ball joint housing is
6. cam swivel bolt seat oval side up and bolt in frame anchor bracket Check for torsion bar cushion in lower control arm housing with cam bolt barely entered in cam swivel Slide torsion bar into rear cam Rotate cam and tor sion bar assembly until cam is positioned as close as possible to floor pan Engage front of torsion bar in lower control arm shaft assem bly as far as bar will go CAUTION Unless anchor blade is in the position just de scribed when installing torsion bar it will be impossible to adjust front suspension to the proper suspension height Center and install lock ring in rear of cam housing Pressure may have to be applied to torsion bar to enable lock ring to be installed in housing After installation of lock ring tighten cam bolt until approximately 1 inch of threads are showing above the anchor bolt swivel NOTE This is an approximate setting and is to be used merely as a starting point when ad justing suspension height This setting is also necessary to place load on the torsion bar spring before lowering vehicle to the floor Check and adjust suspension height Refer to Checking Front Suspension Height Para graph 2 CAUTION Caster and camber and front suspension height should always be checked whenever the tersion bars are replaced Refer to Checking Front Spring Height Paragraph 2 of this section 20 FRONT WHEEL SUSPENSION 11 SERVICING THE UPPER CONTROL ARM a Re
7. in front cross member Use a hammer and brass drift for loosening then remove nut from shaft Slide lower control arm and shaft assembly from rear of crossmember CAUTION Do not lose torsion bar spring cushion small dise located in end of shaft assembly b Installation Position shaft and lower arm assembly in erossmember in normal position and install washer and nut Tighten 175 to 200 foot pounds torque and secure with cotter pin Position lower ball joinc stud in steering knuckle and install washer and nut Tighten nut 135 foot pounds torque and secure with cotter pin Place shock absorber in position in lower mounting bracket and install bolt and nut Tighten to 40 foot pounds torque Install wheel and tire as sembly Do not lower front of vehicle at this time Install torsion bar spring Refer to Serv icing Torsion Bar Installation Paragraph 10 4 LOWER CONTROL ARM PIVOT SHAFT BUSHING REPLACEMENT FIGS 31 and 32 Remove lower control arm assembly Refer to Lower Control Arm Removal Paragraph 13 Remove torsion bar spring cushion small disc from end of shaft assembly a Disassembly Remove lock ring from end of bushing housing Support lower control arm assembly in an ar bor press and using a brass drift press shaft and bushing assembly from control arm Re move cotter pin nut and washer and slide bushing assembly from shaft FRONT WHEEL SUSPENSION 21 SHAFT AND BUSHING
8. the groove in bushing will index with opening in frame bracket Thread sway bar into position over top of lower contro arm struts Engage sway bar cushion housings with struts and install lock plates Insert bolts lockwashers and nuts Tighten to 25 foot pounds torque Install wash ers over ends of links concave side up then slide links up through bushings Install wash ers concave side down over ends of links and down on bushings Install nuts and tighten to 15 foot pounds torque 7 SERVICING THE LOWER CONTROL ARM STRUT FIGS 6 and 9 a Removal Remove the nuts lockwashers and bolts that attach the sway bar bushing housing to struts Disconnect sway bar from struts Remove the 57x368 Fig 25 Removing or Installing Steering Knuckle FRONT WHEEL SUSPENSION 17 strut to lower contro arm mounting bolts and nuts Remove the cotterpin nut and bushing re tainer from forward end of strut at front cross member Slide strut and inner bushing retainer from bushing in frame as shown in Figure 9 Using a knife cut bushing out front of frame b Installation Dip new bushing in water and with tapered portion toward rear of vehicle install in open ing in frame using a twisting motion until groove in bushing indexes properly with frame With cupped side out slide washer over threaded end of strut Push strut through bushing in frame Fig 9 Slide outer washer over end of strut cupped side in Install nu
9. 9 cr Fig 15 Adjusting Torsion Bar Cam Bolt ear is used by salesman for carrying samples etc car should be loaded with its normal amount of weight before checking front wheel alignment All factors of front wheel alignment are in terrelated but each angle has specific purpose Four different angles are used in positioning front wheels for proper steering under varying conditions of weight and speed When making adjustments or installing new suspension parts the alignment angles in both front wheels should be checked in the following order Cam ber Caster Steering Axis Inclination and Toe ung FRONT NEGATIVE CASTER POSITIVE CASTER VERTICAL STEERING LINE KNUCKLE 57x199 Fig 16 Caster Angle 14 FRONT WHEEL SUSPENSION CAMBER ANGLE VERTICAL LINE ry AXIS ANGLE B AXIS CENTER LINE E y SCA al AN R 1 a f lia aga IH B SH ll 57x198 Fig 17 Camber Angle Axis Inclination NOTE Front suspension parte are heat treated if they are damaged or bent they should be replaced Under no circumstances should these parts be heated in order to straighten Before checking front wheel alignment the following inspections should be made to deter mine the necessity for repair or replacement of parts Inflate all tires to recommended pressure Check adjustment of front wheel bearings Re fer to Se
10. BEARING CONE NUT LOCK COTTERPIN Fig 33 Front Wheel Bearing Adjustment front wheel bearing adjustment accuracy Fig 33 CHRYSLER SERVICE MANUAL To adjust the front wheel bearings proceed as follows Remove any burrs or nicks on the spindle thread to insure accurate torque read ings Tighten the wheel bearing adjusting nut with an inch pound torque wrench to 90 inch pounds torque while rotating the wheel Selectively position the nut lock over the ad justing nut so that the spindle cotter pin hole is in line with one set of slots in nut lock With out removing the nut lock back off the nut un til the next set of slots in nut lock is lined up with spindle cotter pin hole Insert and bend the cotter pin to secure the nut lock NOTE This procedure should result in from 000 inch no pre load to 003 inch bearing free play measured axially SERVICE DIAGNOSIS 17 FRONT END NOISY POSSIBLE CAUSES AND CORRECTIONS Lack of lubrication in ball joints or tie rod ends Worn upper or lower contro arm pivot bush ings rubber or loose mounting brackets Tighten brackets or replace bushings Loose or worn strut mounting bushings rub ber Tighten mounting nut to proper torque or replace bushing Worn ball joints or tie rod ends Replace as necessary Front shock absorber noisy Tighten mount ing nuts or replace bushing or shock absorber as required Sway eliminator noisy Check attaching bolts
11. CHRYSLER SERVICE MANUAL FRONT WHEEL SUSPENSION 7 Section I TORSION AIRE FRONT WHEEL SUSPENSION CONTENTS Page Servicing the Front Wheel Suspension 0000000 ee ee eee 10 Checking Front Suspension Height 2 200 cece eere 12 Front Wheel Alignment 0 0 0 2 cee cence leen 18 Adjusting Front Wheel Toe IM sis SE Es ss Se se eene 15 Checking Steering Axis Inclination ss ss ss EE ss se Ese N eee rae 16 Servicing the Torsion Bars 0 ccc cee cee cece ee hh nnn 19 Front Wheel Bearing End Play Adjustment 0 005 22 Service Diagnosis 60s wl i kw ew aye a SR EER ewe a EU 22 DATA AND SPECIFICATIONS MANUAL STEERING Caster 5 to 7 0 14 right 14 14 left WITH POWER STEERING Steering Axis Camber Inclination 14 Ve 14 Preferred At 0 Camber Caster 0 14 right 5 to 7 l le 144 EOM left At 0 Camber OA Preferred SPECIAL TOOLS BEE ee i e Remover and Installer Shock Absorber Lower Bushing OAR SE OE Installer Lower Control Arm Bushing Bi N RA EE ee te ORE Remover and Installer Upper Control Arm Bushing ei EE EO AO epe Wrench Ball Joint Assembly to Upper and Lower Control Arm 3504 AE e EE EN Remover Bail Joint Stud 8 FRONT WHEEL SUSPENSION CHRYSLER SERVICE MANUAL TIGHTENING SPECIFICATIONS Foot Pounds Shock Absorber Upper Mounting N
12. HAFT S4195 FRONT SWAY BAR SHAFT M BUSHING ASSEMBLY ADJUSTING BOLT TORSION BAR ANCHOR BRACKET 5x98 Fig 11 Torsion Bar Spring Cam and Height Adjustment Bolt Assembly to frame and the lower control arm Figs 6 and 10 The front end of the torsion bars are indexed with lower control arms at frame front cross member pivot points Figs 1 and 2 The rear end of torsion bars are indexed in anchors which are supported by brackets welded to frame side rails and crossmember as shown in Figure 11 The torsion bar springs Fig 12 CHRYSLER SERVICE MANUAL are marked L and R in manufacture and are not interchangeable EXHAUST PIPE CROSSMEMBER ATTACHING BOLTS ADJUSTING CAM ADJUSTING BOLT F ANCHOR BRACKET LOCK RING RIGHT HAND SIDE TORSION BAR X FRAME CROSSMEMBER s CROSSMEMBER ATTACHING BOLT CROSSMEMBER ATTACHING BOLTS ADJUSTING CAM t FRAME CROSSMEMBER ANCHOR BRACKET LOCK RING LEFT HAND SIDE TORSION BAR CROSSMEMBER ATTACHING BOLT 57x78 Fig 12 Torsion Bar Spring Rear Mounting SERVICE PROCEDURES 2 CHECKING FRONT SUSPENSION HEIGHT Front suspension height should be checked and if necessary reset whenever service work has been done on the torsion bars The vehicle should be placed on a level floor with weight of vehicle on the torsion bars No passenger load full gas tank Using a steel rule measure from the lowest point of th
13. LINK BUSHING Ladies Taie af LOWER CONTROL ARM SWAY BAR BUSHING Fig 6 Lower Control Arm Strut and Sway Bar Assembly through the crossmember and from the axis of lower contro arms The steering knuckles are connected as shown in Figures 7 and 8 to up per and lower arms through ball joints thus eliminating the king pins This also eliminates the king pin inclination procedures and the term Steering Axis Inclination will be used hereafter To prevent the possibility of any fore and aft movement of the lower control arms a strut is attached from frame crossmember to lower control arm as shown in Figure 6 The forward end of the struts are mounted in the front cross member with replaceable rubber bushings as shown in Figure 9 The sway bar shaft is insulated and mounted nad KNUCKLE we P STEERING e UPPER CONTROL ARM BALL JOINT l D Y k LOWER CONTROL ARM BALL J Fig 7 Steering Knuckle and Ball Joint Assembly FRONT WHEEL SUSPENSION 11 UPPER BALL JOINT ASSEMBLY UPPER CONTROL OUTER SEAL INNER SEAL OUTER SEAL STEERING RETAINER KNUCKLE NUT COTTER PIN STEERING KNUCKLE LOWER BALL JOINT ASSEMBLY LOWER CONTROL ARM 57x65A Fig 8 Upper and Lower Steering Knuckle Ball Joint Assembly BUSHING 57x64 Fig 9 Front Strut Bar Bushing Assembly 12 FRONT WHEEL SUSPENSION LOWER CONTROL ua ARM STRUT i KTA SWAY BAR S
14. e ball joint to floor as shown in Figure 13 Again using steel rule measure from the underside of lower control arm bushing housing at center line of lower control arm as shown in Figure 14 Under car weight the bushing housing will always be higher than the ball joint housing The differ ence between these two points should be held to 2 inches plus or minus 4 inches Check measurements on the opposite side of car in same manner After the differential measure ments have been established for each side they should be compared The results must be held within 14 inch of each other NOTE Jounce front of car and allow it to find its free height before checking CHRYSLER SERVICE MANUAL Fig 13 Measuring Front Spring Height Make correction by tightening or loosening the adjusting bolt at torsion bar anchor Fig 15 until correct height has been obtained When front suspension height has been changed by adjustment check alignment of front wheels and aiming of headlight beam Adjust as neces sary 3 FRONT WHEEL ALIGNMENT CASTER AND CAMBER Correct front wheel alignment produces easy positive steering with a minimum of scuffing action between tire and load Normally when checking front wheel alignment car should be empty all luggage or load should be removed If a constant load is carried such as when a Fig 14 Measuring Front Spring Height at Control Arm FRONT WHEEL SUSPENSION 13 57x26
15. eck cas ter camber and toe in and adjust as required Bent upper or lower control arm Replace as required 24 REAR AXLE Section II REAR AXLE CONTENTS CHRYSLER SERVICE MANUAL Page Removal of Differential Carrier Assembly 00005 28 Differential Drive Gear and Cage Disassembly 29 Drive Pinion Shaft and Bearing Disassembly 30 Pinion Bearing Pre Load and Pinion Setting 34 Gear Adjustment for Correct Tooth Contact llus 39 Axle Assembly EER Og salad ie eel ERES SL UEBER 40 Setting Axle Shaft End Play se eee 42 Removing Broken Axle Drive Shaft 0002 ss 43 Rear Axle Housing Alignment sees 43 Service Diagnosis c v cue eer ha e hen 44 DATA AND SPECIFICATIONS Rear Axle C 75 C 76 IM 1 2 4 TYDE os EER OE Se Oe OE gee ee Semi Floating Semi Floating Semi Floating Gear TYDE sos EER ESE erect Hypoid Hypoid Hypoid Ring Gear Diameter 8 75 8 75 8 75 Pinion Bearing 2 2 2 Type c Ee EG Ee EE ee year Tapered Roller Tapercd Roller Tapered Roller Adijustment ee EE ee Shim Pack Shim Pack Shim Pack Differential Bearings 2 2 2 Types anae Ge e bea ubt eg ae is Tapered Roller Tapered Roller Tapered Roller Adjustment ssi esses Threaded Adjuster Threaded Adjuster Threaded Adjuster
16. for tightness and rubber bushings for wear If rubber bushings are worn replace sway eliminator assembly Worn or loose front wheel bearings Adjust or replace as required 18 BODY HAS TENDENCY TO PITCH AND ROLL Low or uneven tire pressures Inflate tires to proper pressure Shock absorber inoperative Replace as re quired Loose sway eliminator Tighten mounting bolts to proper torque Improper front suspension height Adjust torsion bar springs as required 19 TIRE WEAR The same items which caused excessive tire wear in the previous suspension will also apply to the 1957 series suspension 20 STEERING The following is a list of steering problems which may be checked after it has definitely been established that difficulty is caused by the front suspension system 21 WHEEL BOUNCE Unequal tire pressure Inflate tires to recom mended pressure Unbalanced wheels tires or brake drums A wheel and tire assembly that is out of statie balance can cause an up and down action which will affect steering ability and control CHRYSLER SERVICE MANUAL Damaged or in some instances repaired tires Inoperative shock absorber Replace shock absorber 22 HARD STEERING Lack of lubrication in ball joints or tie rod ends Low or uneven tire pressure inflate to prop er pressure Improper caster Check and adjust front end alignment Upper or lower control arms bent or twisted Replace as required
17. ght wheel to 20 degrees The turntable under left wheel should indicate 2115 degrees plus or mi nus 1 degree If reading is not within these limits the steering knuckle arm or steering gear arm may be bent Before above check is made make sure that camber caster steering axis inelination and toe in are within limits 5 CHECKING STEERING AXIS INCLINATION Steering axis inclination is amount in degrees that axis of the ball joints lean away from ver tical toward center of car Fig 16 If camber ean be adjusted within the recommended limits it is unnecessary to check steering axis inclina tion To check axis inclination refer to Figs 16 and 17 and proceed as follows Inflate tires to recommended pressure place front wheels in straight ahead position on turn tables and set foot brakes Grasp front bumper at center and move front end of car up and down several times to permit front suspension parts to settle in normal unloaded position Assemble gauge to right wheel Fig 23 and pull out turntable loek pins Turn front wheels to left until right wheel has turned more than CHRYSLER SERVICE MANUAL 54x248 Fig 24 Checking Steering Axis Inclination Gauge C 3409 20 degrees then return to 20 degrees Adjust secondary serew Fig 24 which controls the short pointer until bubble is centered in spirit level Do not disturb gauge setting or release brakes Turn front wheels to right until right wheel is tu
18. h f el AU BUSHING NUTS LUBE FITTING 3 gt BALL JOINT UPPER N MR EED ARM SHiM 4 shim Fa CAM X ORBER y ms SEAT Kk NUT ERS F y kon SNES TORSION BAR SEAL INNER SEAL OUTER 9 x RETAINER pa ation BUMPER STEERING KNUCKLE FLAT WASHER NUT COTTERPIN BUSHING WASHER LINK SWAY BAR BOLT SEAL ri LOWER CONTROL ARM V RETAINER LOCKWASHERS WASHER NUI PLATE i COTTERPIN i BUSHING UN ie STRUT BOLT v RETAINER RETAINER 57x70 Fig 2 Front Suspension Disassembled View Fig 3 Lower View Front Suspension Assembly i0 FRONT WHEEL SUSPENSION CHRYSLER SERVICE MANUAL Section I TORSION AIRE FRONT WHEEL SUSPENSION The 1957 Chrysler and Imperial Cars are equipped with a completely new rubber mounted ball joint type independent suspension system using torsion bars instead of coil spring Figs 1 2 and 3 Torsion bars make more efficient use of metal increases the fatigue life of the metal and permit accurate re adjustment of car height to compensate for settling of the suspension which might occur after long pe riods of service This new suspension gives im proved steering and directional stability and with the anti brake dip principle built into the design the tendency of the nose of the car to dip when braking is reduced to a minimum Torsion bar springs also permit relocating of steering linkage and control arm inner
19. moval FIG 2 Place a jack under lower control arm and raise front wheel off floor Remove wheel and tire assembly Remove cotter pin nut and washer from upper ball joint stud Install tool and load studs Using a hammer remove ball joint stud from steering knuckle by striking the ball joint boss on knuckle sharply Do not hammer on threaded section of stud Remove upper control arm front and rear pivot bolt Remove control arm from support mountings Do not remove brackets from frame b Installation Position upper control arm in support mounting bracket and install front and rear mounting bolts washers and nuts With control arm in normal position tighten nuts to 65 foot pounds torque Place upper ball joint stud in steering knuckle and install washer and nut Tighten nut to 135 foot pounds torque and secure with cotterpin 12 UPPER CONTROL ARM BUSHING REPLACEMENT Remove upper control arm Refer to Upper Control Arm Removal operations 1 through 7 Remove bushings by either pressing them out with Tool C 8558 Fig 29 or using a hammer and suitable drift UPPER CONTROL ARM WOOD BLOCK BUSHING 57x77 N Fig 29 Removing Upper Control Arm Bushing CHRYSLER SERVICE MANUAL WOOD BLOCK UPPER CONTROL ARM BUSHING 7 Fig 30 Installing Upper Control Arm Bushing NOTE Make definitely sure control arm is properly eupported when removing bushings If hammer and drift are used extreme ca
20. pivot points so that their steering geometrics are more nearly matched resulting in less wheel fight because the vertical movements of the road wheels have little effect on the steering linkage The new system also offers a number of other advantages in terms of longer part life and ease of servicing Lubrication The number of lubrication points has been re duced to 8 in the new suspension system The suspension pdints requiring lubrication are ef fectively sealed against entry of dust dirt water or other contaminants Rubber bushings should not be oiled or greased The use of lu bricant causes pre mature failure of bushings COTTER PIN WASHER FRAME CROSSMEMBER 57x63 BRACKETS pe UPPER CONTROL ARM WWO NN A n SHIM PACK Fig 4 Upper Control Arm Shim Pack and Bracket 1 SERVICING THE FRONT SUSPENSION SYSTEM The upper control arms are mounted on remov able brackets which are bolted to the frame sub side rail Shim packs are mounted between brackets and frame side rail to establish caster and camber settings for each front wheel as shown in Figure 4 The lower control arms are assembled to pivot shafts and mounted to frame crossmem ber in replaceable rubber bushings as shown in Figures 5 and 6 The pivot shafts extend WASHER CUSHION TORSION BAR Fig 5 Lower Control Arm Pivot Shaft and Bushing Assembly CHRYSLER SERVICE MANUAL STRUT BAR BUSHING
21. re must be exercised to avoid damaging bushing surface in the control arm When installing new bushings always make sure control arm is supported squarely at the point bushing is being pressed in Position fiange end of new bushing in Tool C 3558 Fig 30 and support control arm squarely Using an arbor press install bushings flange out into control arm until the flanged portion of bushings seat on arm Install upper control arm Refer to Control Arm Installation operations 1 through 3 13 LOWER CONTROL ARM a Removal Raise car by placing jack under frame cross member Remove wheel and tire assembly Re move torsion bar spring from lower control arm to be removed Refer to Servicing Torsion Bar Removal Paragraph 10 Remove shock ab sorber lower eye attachment nut and bolt from mounting bracket Push lower portion of shock absorber up into frame opening Remove the two strut to lower control arm mounting bolts and nuts Remove cotter pin nut and washer from lower ball joint stud Remove lower ball joint stud from knuckle Refer to Paragraph 9 a Remove cotter pin nut and washer from lower control arm shaft assembly With washer CHRYSLER SERVICE MANUAL WASHER FLANGE E S ad 57x74 Fig 31 Removing or Installing Lower Control Arm Pivot Shaft Bushing removed reinstall nut to protect threads un til it is flush with end of shaft The lower con trol arm shaft is a tapered fit
22. rned to an angle of more than 20 degrees mark Allow wheel to back off to exactly 20 de grees Adjust primary screw Fig 24 until bubble centers in spirit level The reading on 40 degree scale of gauge will be steering axis inclination for right wheel To check angle of left front wheel place gauge on left wheel turn front wheels to right and repeat procedure outlined above NOTE If the steering axis inclination does not conform with limits listed in Specifications check for bent frame steering knuckle or con trol arms or damaged ball joints 6 SERVICING THE SWAY BAR FIGS 6 and 10 a Removal The front sway bar is attached to frame and strut bars through insulated rubber mounting brackets To remove the sway bar proceed as follows Remove two sway bar link retaining nuts and concave washers Remove two sway bar cushion retaining nuts lockwashers and bolts one on each strut Slide sway bar out through con CHRYSLER SERVICE MANUAL trol arm struts and away from vehicle The sway bar cushions are not serviced separately If replacement is necessary install new sway har assembly Remove lower concave washers Remove sway bar link insulating bushings from frame bracket by forcing out of position If bushings are worn or deteriorated install new ones as required b Installation Dip new sway bar link bushing in water in stall in opening in frame bracket using a twist ing motion When installed properly
23. rvicing the Steering Knuckles Para graph 8 of this Section Check tire wear as outlined in Wheels and Tires Section XII Check upper and lower ball joints tie rod ends and idler arm for excessive looseness Check for bent frame and rear spring U bolts for tightness or shifted axle housing CHRYSLER SERVICE MANUAL Fig 19 Checking Camber Tool C 3409 Grasp the front and rear bumper at center and jounce car up and down several times This will place the torsion bar springs and shock absorbers in their normal unloaded position The car must remain in the normal unloaded position while checking camber caster and steering axis inclination Negative Caster is amount in degrees that the axis of the ball joint leans from vertical toward front of car Fig 16 Positive Caster is the amount of degrees that ball joints lean toward rear of car Camber is amount that front wheels lean out ward or inward from the vertical when viewed from front of car Fig 17 With positive cam 54x250 Fig 18 Checking Caster Right Wheel Fig 20 Removing Shims to Adjust Camber or Caster CHRYSLER SERVICE MANUAL ber wheels are farther apart at top than at bottom With negative camber this condition is reversed Caster and camber adjustment Figs 18 and 19 is accomplished by the use of 4 and Vs inch shims placed between the upper control arm support brackets and the frame sub side rails
24. seated on con trol arm Tighten to minimum of 250 foot pounds torque Slide seal and dust cover down into position over stud then position stud in steering knuckle Install washer and nut Tight en 135 foot pounds torque Install cotterpin lubrication fitting and lubricate ball joint us ing a good grade of chassis lubricant and rein stall wheel and tire assembly 10 SERVICING THE TORSION BARS The torsion bars are not interchangeable side for side The left hand bar cannot be used on the right side and vice versa The bars will be marked left or right by L or R stamped on the end of the rod as shown in Figure 12 The bars should always be installed with letters toward the rear of car a Removal of Torsion Bar Cam Swivel and Bolt To replace torsion bar cam refer to Fig 2 and proceed as follows Raise vehicle off floor by jacking under frame crossmember Release load from torsion bar by unscrewing the cam ad justing bolt partly out of swivel CAUTION To prevent swivel from falling into frame brack et do not loosen the swivel bolt all the way ont until torsion bar is removed FRONT WHEEL SUSPENSION 19 Remove the lock ring from rear of anchor Fig 12 Slide torsion bar rearward enough to disengage forward end of bar from lower control arm then forward to disengage torsion bar from cam Remove bar bolt swivel and cam from frame bracket anchor b Installation With car raised off the floor assemble
25. t Tighten nut sufficiently to install strut to lower contro arm mounting bolts Install bolts lock washers and nuts and tighten to 65 foot pounds torque Tighten strut nut to 30 foot pounds torque and install cotter pin Check caster and camber 8 SERVICING THE STEERING KNUCKLES FIG 25 a Removal Remove wheel tire and drum Cover brakes with clean cloth to protect lining from becom ing covered with grease Remove the cotterpins nuts and lockwashers attaching the steering arm and brake dust shield to steering knuckle Remove steering arm and brake assembly from steering knuckle but leaving the brake hose attached Do not allow assembly to hang by the brake hose Remove ball joint studs from steering knuckles as described in Servicing the Upper and Lower Ball Joints Paragraph 9 using Tool C 3564 Lift steering knuckle out and away from vehicle b Installation To install steering knuckle refer to Fig 25 and slide upper and lower ball joint studs into steering knuckle and install lockwashers and nuts Tighten the ball joint stud nut to 135 foot pounds torque Install cotterpins Slide brake assembly over knuckle and into position Install lockwashers and nuts on upper rear and lower front bolts Install upper front and lower rear bolts through dust shield and Steering knuckle then slide steering arm over 18 FRONT WHEEL SUSPENSION bolts Install lockwashers and nuts Tighten nuts evenly to 55 foo
26. t pounds torque Install cotterpins Remove covering from brake shoes replace wheel tire and drum assembly Adjust front wheel bearings as per Front Wheel Bear ing End Play Adjustment Paragraph 16 Re fer to Front Wheel Alignment Caster and Camber Paragraph 8 9 SERVICING THE BALL JOINTS UPPER AND LOWER FIGS 26 and 27 a Removal of Upper Ball Joint CAUTION Upper and lower ball joints are not interchange able The upper ball joint is a preloaded joint and should not be used in the lower control arm Remove wheel and tire assembly With support under the lower control arm remove upper and lower ball joint stud nuts Install Tool C 3564 Fig 26 Apply load to studs and rap knuckles at ball joint boss sharply with hammer to loosen stud To avoid damaging stud do not at tempt to hammer stud out of knuckle Remove tool and disengage ball joint from knuckle Remove ball joint dust cover and grease seal Remove lubrication fitting from top of ball joint using Tool C 356 as shown in Figure 27 unscrew ball joint from upper control arm b Installation o Upper Ball Joint NOTE When installing new ball joint it is BALL JOINT STEERING KNUCKLE Fig 26 Removing Upper Ball Joint Removal Tool C 3564 CHRYSLER SERVICE MANUAL TOOL UPPER CONTROL ARM d die KNUCKLE BALL JOINT 57x73 Fig 27 Removing or Installing Upper Control Arm Ball Joints very important that the
27. ut 0 0 0 000 ccc cece cece rs 25 Shock Absorber Lower Mounting Nut 0 0 0 00 0 00 00 Se cece cece mas 40 Sway Eliminator Shaft Link Nuts 0 200 00 c ccc ce eee s 15 Sway Eliminator Insulator Retainer Nuts 00 0 000 000 0002 cee eee ee 25 Upper and Lower Control Arm Ball Joint iii EE ES ER Se Se eee 250 Lower Ball Joint Stud Nut 2 cette ea 135 Strut to Lower Control Arm Mounting Bolts 2000 cee ee sel sd 65 Lower Control Arm Strut Bushing Nut 0000 0 000 0000 ccc ee eese 35 Shaft to Lower Control Arm Bushing Retaining Nut Inner 0 0 125 Upper Ball Joint Stud Nut ie cece en 135 Lower Control Arm Shaft to Crossmember Mounting Nut 0 0 00 0 0 000008 200 Upper Control Arm to Support Bracket Mounting Bolt Nuts 55 65 Control Arm Support Bracket to Frame Bolt 14 DM E cp Lb rM N 70 Steering Knuckle to Brake Support Bolt leise eee 55 Steering Knuckle to Steering Knuckle Arm Nut EE Ge isses 50 SHOCK ABSORBER CAR HEIGHT MANUAL UPPER CONTROL ARM LEVELING DEVICE TORSION BAR SPRINGS UPPER CONTROL ARM FRONT SWAY BAR LOWER CONTROL ARM AND HINGE L BALL JOINTS LOWER CONTRO ARM STRUT 578R 197 Fig 1 Frame and Front Suspension CHRYSLER SERVICE MANUAL FRONT WHEEL SUSPENSION 9 LOCKWASHERS SWIVEL e BOLT 5 f AN dp re ve RANGERS SUPPORT BRACKET ft w
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