FRAME, SPRINGS AND SHOCK ABSORBERS DATA
Contents
1. CYLINDER TUBE CHECK VALVE O A RESERVOIR TUBE CHECK VALVE SPRING CHECK VALVE SEAT RING AND CUP ASSEMBLY s4X525 Fig 13 Rear Shock Absorber Sectional View CHRYSLER SERVICE MANUAL FRAME SPRINGS AND SHOCK ABSORBERS 385 UPPER NUT MOUNTING Ze SHOCK ABSORBER ASSEMBLY AN WASHER BUSHING SPACER LOWER MOUNTING ASSEMBLY SCREW LOWER MOUNTING LOCK WASHER 55P1014 Fig 14 Front Shock Absorber Installed Fig 15 Rear Shock Absorber Installed b Installation To install a new mounting bracket and bushing bolts and tighten to 35 foot pounds torque refer to Figure 14 and proceed as follows 4 Slide cup washer concave side down over piston rod and down on bushing Install nut and tighten to 35 foot pounds torque or until the upper and lower concave washers bottom against steel sleeve 1 Position the new mounting bracket so that the mounting holes are at a right angle to the shock absorber Using Tool C 3413 press mounting bracket into eye until centered CAUTION Always press 12 REMOVAL AND INSTALLATION OF against steel sleeve to avoid damage to the REAR SHOCK ABSORBERS Fig 15 assembly To remove a shock absorber remove nuts from 2 Extend the shock absorber piston rod to pins which pass through eyes at top and bottom its full travel and slide lower cup washer of shock absorber Slide unit off pins concave side up over rod and down into i2. 2 Slide a 4 inch wrench over the flats on the top of shock absorber piston rod to keep rod from turning Now remove nut and cup washer 3 Remove the two lower mounting bolts then withdraw shock absorber through opening in the bottom of spring seat The lower cup washer may remain in place or drop through when shock absorber is removed 4 Using a suitable drift force the inner steel sleeve out of bushing then remove bushing from frame opening Check bushing for de terioration or fatigue Install new bushing 5 Before installing new bushing dip bushing in soapy water then insert in position in frame using a twisting motion When in stalled properly the groove in bushing will index with frame 6 Now force steel sleeve through opening in bushing and down into position 7 Remove the mounting bracket from the shock absorber eye using Tool C 3413 Press mounting bracket and bushing out of eye The mounting bracket and bushing are serviced as an assembly only 384 FRAME SPRINGS AND SHOCK ABSORBERS CHRYSLER SERVICE MANUAL PISTON ROD OIL SEAL PISTON ROD OIL SEAL CAP SEAL RETAINER OIL SEAL GASKET p ARO TA conan sus T em on 9 MB MIT OIL SEAL SPRING O ROD GUIDE eo of ce eo gt eee en DUST SHIELD BAFFLE COMPRESSION RELIEF O VALVE A lt lt ee Nr SS am rd pP PPP X aE ff SD nn 500 BOOS PISTON NUT A PISTON
3. and corrected if necessary Whenever possible the parts should be securely fastened with hot rivets In cases where no riveting equipment is available finished bolts snugly fitted in reamed holes may be used The nuts should be securely tightened and non spreading lockwashers used Cold rivets are not recommended unless ade quate power press equipment is available to do a secure riveting job When welding frame members care must be taken to localize the heat so that the steel hard ness of frame will be retained Reinforcement welds should run lengthwise along the side of the reinforcement Figures 1 2 3 and 4 show the various dimen sions to be used as a guide for checking frame alignment These dimensions are the true dis tance between the two points as measured with a steel tape Figure 4 shows a few of the various measure ments that may be taken to check the square ness of the frame Diagonal measure will quickly determine which section of the frame is bent and where force should be applied to restore correct alignment 3 FRAME ALIGNMENT To properly check a frame for alignment diag onal measurement should be performed with great care When the body is removed the frame may be easily checked for alignment by meas uring diagonals as shown in Figure 4 with trammels or steel tape and checking dimensions given in Figure 1 2 and 3 Measurements may be taken without removing the body from the chassis by
4. and the resistance offered by the shock absorber are low at those points Mounting the shock ab sorbers within the coil spring allows for softer dampening action and more complete front end control 10 TESTING ORIFLOW SHOCK ABSORBERS Oriflow shock absorbers are designed to operate with low resistance when operated slowly and with high resistance when operated rapidly Since they operate with little resistance when compressed by hand or by bench test methods their true operating efficiency can be determined best by a road test It is impossible to determine the operating efficiency of Oriflow shock ab sorbers by rocking the car by the bumper When road testing drive the car over a fairly rought road first to test the resistance under fast shock absorber piston speed Then drive over a fairly smooth road to test the resistance during slower shock absorber piston speeds Hand testing Oriflow shock absorbers will only reveal complete failure The amount of ride control evident from a hand test on the bench is small compared with the control exerted under actual riding conditions For this reason it is im possible to feel any sudden resistance in an Ori flow shock absorber no matter how fast it is operated by hand 11 REMOVAL AND INSTALLATION OF FRONT SHOCK ABSORBER a Removal Refer to Figure 14 and then proceed as follows 1 Raise the hood and remove dirt or grease from around the shock absorber upper mounting area
5. INCHES AND ARE PLUS OR MINUS Ms UNLESS OTHERWISE NOTED TOP OF FRAME LINE TOP OF FRAME LINE 75 4 tM GAUGE HOLE IN EACH SIDE OF FRAME DARA e rt o o oo o 13 9 00 o 1 o o PRR I a o lt TL S YI y EOI Mosis S reia 55 x 38 Fig 2 Frame Dimensions Custom Imperial CHRYSLER SERVICE MANUAL FRAME SPRINGS AND SHOCK ABSORBERS 377 Section IX FRAME SPRINGS AND SHOCK ABSORBERS FRAME 1 DESCRIPTION Double channel box type frames are used on all 1955 Chrysler Models The frames are rigidly re inforced with lap welled crossmembers The rear engine support is removable and of the open channel design with double flange instead of single If the frame becomes misaligned due to a col lision stresses may result which may affect the normal operation of rear axle body front sus pension and other chassis units A misaligned frame can cause body and door opening misalign ment Any attempt to cold straighten a severely bent frame may cause rupture of the welds if any and may also cause the bent portions to 58146 A7 Ke 41 55 TOP OF FRAME LINE 7 a th SIDE OF FRAME o 9 09 GAUGE HOLE IN EACH crack If heat is required to straighten a frame member do not heat the member to more than a dull red color Strength and frame hardness may be reduced if excess heat is applied to the frame during straightening processes After a bent frame has been straightened inspect it closely for cracks or s
6. i position When installing a shock absorber first install the bushings in the shock absorber s eyes Install 3 Slide shock absorber up through opening in the inner bushing retainers the shock absorber spring seat be sure the extended piston and bushing assembly and the outer retainers rod enters steel sleeve through upper bush The concave face of each retainer must fit ing and up into position Install retaining against the convex face of the adjacent bushing
7. using a plumb bob and chalk line on a level floor Attach the line of a plumb bob to the center of one of the rear body bolts The plumb bob should be suspended slightly above the floor When the plumb bob comes to rest mark the floor directly underneath it The marks made on the floor will represent various points of the frame to be checked diag onally Move the car away so that the distance can be measured to compare with the diagonal measurements shown in Figures 1 2 3 and 4 4 REPLACING BODY SUPPORT BRACKETS 1 The body support brackets are welded to the frame in manufacturing Due to the Box construction of the frame rivets cannot be used to attach a new body bracket to the frame 33 x 40 Fig 4 Typical Frame Diagonal Measurements CHRYSLER SERVICE MANUAL FRAME SPRINGS AND SHOCK ABSORBERS 379 2 Cut the damaged bracket off the frame file surface smooth Clamp the new bracket in the correct position and weld securely to the frame member 3 The shielded arc weld method is recom mended for frame welding or the replace ment of body frame support brackets The heat generated from the welding operation is localized and burning of material is held to a minimum when a mild steel welding rod is used 4 Install the body bolt and washers insulator and nut Tighten to 18 foot pounds torque On Convertibles install a solid spacer bolt and nut and tighten securely SPRINGS 5 DESCRI
8. CHRYSLER SERVICE MANUAL FRAME SPRINGS AND SHOCK ABSORBERS 375 FRAME SPRINGS AND SHOCK ABSORBERS DATA AND SPECIFICATIONS FRAME Models C 67 C 68 C 69 C 70 C 300 TYPE Welded Double Channel Box Section Side Rails DIMENSIONS See Figures 1 2 3 and 4 REAR SPRINGS TYPE Semi Elliptic NO OF LEAVES SEDANS 5 6 6 7 7 STATION WAGON 7 7 WIDTH 2 5 2 5 2 5 2 5 2 5 LENGTH 55 55 55 55 55 E SHACKLE Silent Block Rubber Bushings HANGER Side Strapped With Rubber Bushed Bolts SHOCK ABSORBERS TYPE Oriflow Double Acting Hydraulic TORQUE SPECIFICATIONS Foot Pounds REAR SPRING SILENT BLOCK NUT 60 UPPER obesse 60 SHOCK ABSORBER STUD NUT 14 LOWER 70 REAR SPRING U CLIP BOLT NUTS 70 REAR SPRING SHACKLE NUTS e 50 SWAY BAR BRACKET TO FRAME BOLTS 55 SWAY BAR SHAFT RETAINER TO CONTROL ARM BOLT NUT 55 ESSENTIAL TOOLS CO IL nut dee we ea ee Remover and Installer Shock Absorber Lower Mounting Assembly 276 FRAME SPRINGS AND SHOCK ABSORBERS CHRYSLER SERVICE MANUAL E 31 NOTE 52 DIMENSIONS ARE SHOWN AS INCHES AND ARE PLUS OR MINUS Me UNLESS OTHERWISE NOTED TOP OF FRAME LINE TOP OF FRAME LINE 75 4 th GAUGE HOLE IN EACH pm NAO Y 1933754 G lU 5 55 x 37 SIDE OF FRAME y E 411 tu o lt MIA k 9 a 96 r1 D Fig 1 Frame Dimensions Windsor and New Yorker BE 411346 47 293 4 52 48 na 7 6 35 NOTE 56 DIMENSIONS ARE SHOWN AS
9. PTION The rear springs used on Chrysler cars are of the semi elliptical design The front ends of the rear springs are mounted to removable hangers which are bolted to brackets welded to the outer sur face of the frame side rails See Fig 5 The spring front pivot bolts are cushioned in rubber which tends to help reduce noise and allows increased riding comfort through a reduc tion in torque and brake reaction shock No lubrication is required at this point The rear ends of the springs are attached to the frame through the medium of flat plate shackles rubber shackle bushings shackle bolts SPRING ASSEMBLY 56x53 Fig 5 Rear Spring Front Mounting and nuts See Fig 6 Thus the suspension of the rear springs in rubber tends to reduce road noise to a minimum No lubrication is required at the rear shackles The width of the spring leaves are 215 inches refer to Data and Specifications Thus with outboard mounted rear springs rear end roll is greatly reduced and car stability on curves or sharp turns is maintained Should it become necessary to install new springs or silent blocks it will be necessary to remove the four bolts nuts and lockwashers that hold the spring hanger to the frame bracket The pivot bolts cannot be removed unless this is done 6 SPRING MAINTENANCE It is important that spring U bolts be inspected at regular intervals and kept tight to prevent spring breakage Tighte
10. Separating Spring Leaf Fig 9 Prying Interliner Fastener Through Leaf 382 FRAME SPRINGS AND SHOCK ABSORBERS CHRYSLER SERVICE MANUAL 54x362 Fig 10 Positioning Wrap Around Aligning Clip b Installation of Interliner 1 Slip the new interliner in place by opening the gap between the spring leaves again with the tapered bar and moving the inter liner until the prongs of the metal fasteners are aligned with the holes in the shorter leaf as shown in Figure 8 2 With the tapered bar still in place pry the prong end of each metal fastener through the hole in the spring leaf as shown in Figure 9 3 Remove the tapered bar which has re mained between the leaves during these operations The bar may be withdrawn Fig 11 Tightening Aligning Clip while a screwdriver is placed alongside Then the screwdriver may be pulled out reversing the operation which was used to insert the bar in position A faster method for withdrawing the bar is to insert the end of a bar with a short tapered hook along side the tapered bar After the tapered bar has been withdrawn the bar with the hook can be slipped out easily using leverage mo tion inward on the far end of the hooked bar 4 Position the wrap around alignment clip and tighten retainer nut as shown in Fig ures 10 and 11 Peen the end of the bolt over the nut so it will not loosen SHOCK ABSORBER 8 DESCRIPTION Chrysler cars are equipped with
11. double acting Oriflow shock absorbers as shown in Figures 12 and 13 Oriflow shock absorbers cannot be dis assembled for servicing If test reveals the shock absorber is not functioning properly it must be replaced as a complete unit The shock absorber is a device which provides control of the spring s movement and dissipates the majority of the energy which would other wise be stored in the springs resulting in pas senger discomfort and lack of stability The shock absorber converts the energy of the spring into friction when the fluid in the CHRYSLER SERVICE MANUAL FRAME SPRINGS AND SHOCK ABSORBERS 383 FLATS ON ROD s STEEL SLEEVE INSULATOR BUSHING SHOCK ABSORBER ASSEMBLY MOUNTING BRACKET AND INSULATOR ASSEMBLY css aay Af 54x619 Fig 12 Front Shock Absorber shock absorber is forced to escape through the restricted passages causing the spring to return to its normal position without shock to the body 9 OPERATION In the Oriflow shock absorber the resistance is built up slowly at the beginning of the stroke so as not to jolt the passengers This resistance is increased to a maximum at a mid stroke and is tapered off to zero at the end of the movement The major part of the dampening is accom plished at the high velocity mid portion of the stroke where no jolt can originate There can be little jolt at the beginning and at the end of the stroke because both the velocities of movement
12. emoval 1 Unload the rear springs by jacking up the rear end of the frame until the rear shock absorbers are fully extended 2 Remove the alignment clips from the springs If any of the removed parts nut bolt spacer clip are damaged use corre sponding replacement parts 3 Examine the spring interliners If any of them are missing or if any of them have lost their metal fasteners they must be re placed For replacement of these interliners proceed as outlined below 4 Pry out the metal fasteners directly be neath the spring leaf surface and slip out the old interliner after separating the spring leaf to which the interliner was fas tened from the next longer spring leaf To effect this separation pry open the slight 5 Fig 8 Positioning New Interliners gap between the leaves with a screwdriver until a tapered bar can be hammered in place between the screwdriver and the in terliner as shown in Figure 7 Keep the tap ered bar in place Clean the lower grooved surface of the longer spring leaf as far as the interliner makes contact Use sandpaper wrapped around a flat file and scrub vigorously to remove any dirt or rust spots and to obtain smooth metallic surfaces to the left and right of the groove Wipe off excess par ticles including dirt in the groove itself with a clean cloth In order to reach between the leaves open the gap by bearing down on the end of the tapered bar Fig 7
13. n spring U bolt nuts to 70 foot pounds torque The spring shackles should be inspected occasionally to make sure they are tight but not binding Tighten to 50 foot pounds torque No lubrication of any kind must be used on rubber bushings Front spring heights may be affected if the rear spring height varies more than 34 inch on one side as compared with the other side To check this measure the vertical distance from the top of the rear spring main leaf to the under side of the frame side rail on both sides of the 380 FRAME SPRINGS AND SHOCK ABSORBERS CHRYSLER SERVICE MANUAL map papo dx3 uoisuedsng Buds spay pord 41 9 B14 VVSXyg SJHSVAA 9 she EN N I H AN OH NE DA bU SONIHSNY AI8W3SSV YIGIOSEY NDOHS 777 i ih z 32018 INS InN li 43HSVAM Yo CAO Mee didWhas 7 7 7 ds 00 MHBHSVA n os SONIHSNE INIA nos f NJHSVAM eo Pe Ld Se NN CHRYSLER SERVICE MANUAL FRAME SPRINGS AND SHOCK ABSORBERS 38 car If these distances differ by more than 94 inch this is an indication that one of the rear springs should be replaced This condition could be due to a bent frame kick up or an incorrectly welded spring saddle 7 REPLACEMENT OF REAR SPRING INTERLINERS The 1955 Chrysler rear springs are similar to those previously used with the exception of the rear spring interliners To replace the inter liners proceed as follows a R
14. trains If any defects are apparent the frame should either be reinforced or replaced If a damaged or cracked frame is to be rein forced the crack should be prepared to insure a good weld To prevent the crack from spread ing it is advisable to drill a 14 inch hole at the root of the crack Grind or enlarge the crack so as to insure weld penetration to the surface of the reinforcement 48 56 NOTE DIMENSIONS ARE SHOWN AS INCHES AND ARE PLUS OR MINUS M6 UNLESS OTHERWISE NOTED TOP OF FRAME LINE y 41146 1 13 o oo o AU 3 d 217 55 x 39 Fig 3 Frame Dimensions Crown Imperial 378 FRAME SPRINGS AND SHOCK ABSORBERS CHRYSLER SERVICE MANUAL 2 CHECKING FRAME ALIGNMENT The diagrams shown in Figures 1 2 3 and 4 will greatly assist in checking the alignment of a car frame that has been distorted by collision or otherwise In case of collision frame members can often be satisfactorily straightened to the required limits Since the front crossmember brace and upper control arm support are made to unusually close limits necessary for proper front wheel alignment straightening of these units may not be successful It is possible that ordinary straightening methods will suffice for minor damage In case of serious damage or fracture however the entire front suspension crossmember brace and support must be re placed Before the member is replaced it is essential that the frame alignment be checked
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