Clutch discs9. Push the gasket to the back of the spindle. They provided a better ride and reduced the unsprung weight of the rear suspension. Two people may be required to reinstall the rear steel spring. The steering knuckle spindle plays a crucial role in front suspension dynamics. Much has happened since our kick-off of the Project. You will also need a shop, component and assembly manual for your year Corvette, a hydraulic jack, jack stand, and tools. Use engine assembly lube to perform this task. Remove the races and seals and clean the trailing arm in a parts washer to remove the grease and grit. 05: Remove the power steering ram retaining nut from the mounting bracket. The 15/16-inch shock mount nut was torqued to 75 ft-lbs. Now you have a special control arm support tool. 37: Mount the entire steering linkage assembly to the steering arms and Pitman arm. Clamp Four 1/2-inch or 9/16-inch bolts, depending on the year the car was built, fasten the brackets to the frame. The upper control arm bushings are now fitted with new rubber units. For power levels up to about 500 hp, theres really not much that needs changing, other than to [Click here to read more], Selecting a camshaft is one of the most important decisions youll face when building a high-performance small-block for street or bracket racing. It connects the upper and lower control arms via two ball joints. Place the frame on four safety stands that are sturdy and protected with pieces of cardboard. Increase engine speed to approximately 1500 rpm. 20 Invert the control arm and repeat the process on the other bushing. Be sure the cotter key hole lines up. 1963-82 Corvette Rear Suspension Parts - Duntov Motor Company Is your Pitman arm on upside down by chance? The steering linkage must be assembled to the pitman arm, idler arm, and to the steering arms using the correct fasteners and assembly torques. A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Once they are snug go one quarter of a turn more. You will notice that there are both right and left hand threads on the tie rods. Lower the car and turn wheels right and left on the ground. (If you are using steel shims, this is not a problem.) 22: Coat the bushings and the shaft ends with white lithium grease. You can also potentially get hydraulic lines backward during installation from the control valve to the ram and steering becomes erratic quickly. Vette. When all of the pressure is off the spring, pull the control arm down as far as it will go and remove the coil spring. Torque the bolts to 70 ft-lbs. (You can also use a large punch or another piece of solid metal.) THE RUGGED 40 SERIES TORQUE CONVERTER is composed of heavy gauge stamped steel to withstand the extreme rigors of rough applications. Torque the side caps to 60 ft-lbs. 80 80 in/lbs, Jounce Bumper to Frame You can adjust the strut rods to change the rear suspension camber setting on your Corvette. Remember to buy springs in pairs because each manufacturer has slightly different production methods that affect spring rate and height. These bump stops play a very important role in protecting the suspension in case you hit an unexpected bump too fast and the suspension bottoms out. Needless to say, if this type of deformation is noted, throw the gear away and purchase a new one. 120 The store will not work correctly in the case when cookies are disabled. The kits include all of the necessary parts. The ideal contact pattern (centered on the teeth) is the drawing in the middle. It must not slip because it can cause injury if it does. 20 They perform an important function. 30, Torque Arm Backlash occurs when you take your foot off the throttle; you hear a clunking noise coming from the rear of the car. Insert it through the control arm steel shaft from the top. (888) 581-3838. Congratulations! The weight and type of engine (small- or big-block) largely determines the spring rate of the particular car. Clutch plates10. The block is attached to the Pitman arm gear that turns the steering system when it moves back and forth. However, if you are going to aggressively drive your Corvette or use it for autocross competition, install a front spring with a higher spring rate. This cutaway of a C3 steering box shows the inner workings of this critical part. lower the weight of the car on it, roll the car, go back and torque the spring & arm bolts with the suspension loaded to the specified AIM torque rating. 80 1963-1982 Corvette Front Suspension Rebuild Farmers Branch, TX 75234. After the clutches and side gears are installed, insert a thrust washer on each side of the unit. This can be corrected with proper adjustment at the control valve via an adjustment screw with the engine running and both front tires off the ground. Pitman Arm Nut Torque | Team Chevelle Distributor 18: To remove the control arm bushings, start by removing the end cap bolts, lock washers and collars. Slowly lower the jack to see if the upper and lower control arms securely hold the coil spring in place. It should not bind after installation. Flywheel If the hydraulic lines are not properly seated and tightened in the control valve and ram, they can leak. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The second way is to do it in the car but you must remove the pitman arm and take torque measurements by placing a torque wrench on the steering wheel hub and measuring steering gear torque through the steering column. At this stage, the frame has been inspected, repaired, and finished. Repeat this step on the opposite side. Do not overtighten. The leader in Corvette Parts parts since 1977. Do not stand in front of the spring. Repeat this process on the other side. C2 and C3 Corvettes used the same idler arm from 1963-'82 for both manual and power steering applications. Run the steering wheel lock to lock several times to bleed out air. (This will allow you to drive the car without doing any real damage to the front tires and suspension.) 19:Install a 3/8-242 1/4 cap screw in one end of the shaft. You are on the upper end of the torque range with your 150# reading. Remove the parking brake hardware (reverse the procedure that starts in Step 3). After the bushings, ball joint, and steel shaft have been removed from the control arm, the shop inspects for cracks or other damage. Filter Bypass Valve The lower control arm includes a steel shaft and is attached with two 7/16-20 x 1.-inch bolts at each end of the arm. Crankcase Once the spring is in the proper position, loosen and remove the hose clamp. Check and make sure you can turn the shaft by hand. 1963 - 1982 Corvette: Technical Article: In-Vehicle Corvette Steering 165, Shock Absorber: Camshaft Sprocket 20 Many Corvette part suppliers sell complete suspension components that have been refurbished. Click Here For Details. A large-diameter steering wheel and skinny, pizza-cutter tires reduced steering effort, but not by much. This cutaway of a C3 differential reveals the components to inspect when the rear case cover is removed. Replacement of this system is straightforward because Chevrolet made it so simple to service. 30, Strut Rod to Spindle Support 75 (+ to Align Cotter Pin) The recirculating ball unit is attached to an arm connected to a relay rod. This is a good procedure to complete before taking the car to the alignment shop. Add or remove shims to adjust the toe-in or toe-out of the rear suspension. 11: Loosen the upper control arm mounting bolts and carefully remove the shims. Optional equipment, such as air conditioning, also impacts the spring rates that are recommended by the factory. I just installed my new power steering box and pitman arm. A couple of spacer plates are employed between the subframe and framerails. C3 C4 C56 C56-A C59 C6 C66M-R CD4E Chrysler CIB5 Cruise-O-Matic . IN VEHICLE C2/C3 CORVETTE STEERING GEAR ADJUSTMENT. Axle As you raise the jack, position the upper ball joint into the spindle. Gary 69 vert 350 M20-373's 72 coupe 350,TH400,336's. Reply . Cars that are equipped with FTL and big blocks are fitted with larger front bars and rear anti-roll bars to help balance the handling. The major mechanical components have now been correctly installed into your refurbished frame. Corvette engine front accessory drive packages were revised over time as vehicle design changed. With the center of the spring secure, install the spring end links. The bump stop is a triangle of rubber mounted to a metal bracket. The most important change occurred in 1981 when the factory installed a composite rear leaf spring. 36: With the new steering linkage assembled, measure the length of one side of the old tie rod assembly. It is much easier to do it this way. 50, Upper Ball Joint Nut By leaving them just snug, the arm is able to move up and down freely during the next steps. (outer) Need Pitman and Idler torque specs | Diesel Place 32878 - 53-62 Pitman Arm/3rd Arm Ball Stud. - Corvette Parts Worldwide Flywheel The power ram shaft A-bracket attaches to the lefthand framerail. 32: Now we can start assembling the steering linkage. Reinstall the suspension with the same number of shims to return it to its previous setting. It uses rubber bushings and washers to minimize noise in the car. When installing the new power steering system, begin with all new components and fresh fluid. Fax (972) 243-3828. performance and installation facility here, 63-82 Pitman Arm To Steering Box Nut w/Washer. These are fairly inexpensive and it is a good idea to install fresh bump stops when putting the front suspension together. Torque specifications for 68-82 Corvettes FT/LBS (Unless specified) Front Suspension: Rear Axle: Front Wheel Bearings 12 Differential Cover Bolts 50 Upper Ball Joint Nut 70 Driveshaft to Pinion Flange 15 Lower Ball Joint Nut 90 Differential Front Mounting Bolt 65 Ball Joint Attachment Nut 28 Steering Arm to Spindle 70 Brake System: 2628 Views 4 Replies 2 Participants Last post by gtr1999, Dec 13 . 50, Upper Cover Bolts Torque these bolts to 35 ft-lbs. Notice that these rotors have been matched to the spindle for trueness with White- Out. Free shipping on many items | Browse your favorite brands | affordable prices. The rear shock absorbers are attached to the trailing arms at the bottom and to the frame at the top. 6 watching. 53-74 Electronic Tachometer Conversion Kit. Clip off any excess wire with a pair of cutting pliers. Install the outer bearing and follow that with a fl at washer. Shown here are a front lower control arm (front) and a rear trailing arm (back). This is done with thin shims inserted between the frame and the control arms steel shaft. 26: Install the new ball joints into the arms and torque them to specs. As you know, both the Eaton 65-79 and the Dana 80-82 Corvette differentials use springs to preload the clutch pack that transfers torque to the unloaded tire. When you move the steering wheel left or right you are moving a control valve bolted to the pitman arm that directs hydraulic pressure to one side of the power ram (also known as a slave cylinder) at the drag link to assist steering effort. Get some friends to sit on the frame as you perform the next part. 4 Items. 80, (Finger tight and align cotter pin hole.) Your objective here is to install fresh bearings, seals, clutch packs, and races to replace any worn parts in the differential. Torque Converters (CVT's) | Comet Clutches Removing Pitman arm from steering box - YouTube Apply some dye according to the kit instructions. Housing The front wheels should have a toe-in of 1/8 to 3/8 of an inch. A new ball joint is installed and the steel shaft receives new rubber or poly bushings. Both are now ready to be installed into the frame. Our performance and installation facility is open Monday-Friday from 8:30am-5:30pm (EST). The relay rod also connects to the idler arm (far right). Simply reverse the disassembly procedure discussed in Chapter 6. Corvette Central Project Split Mod Part 3: Chassis | CC Tech It has been said you can move the world with the power of hydraulics. When they have separated, remove the ball joint nut and pull the control arm out of the spindle. Pump Cover These bolts should be torqued to 30 ft-lbs and the tabs on the French locks need to be bent (shown). in/lbs, Link Bushing Bolts Make sure the guide pin on the spring aligns with the guide hole in the differential. Does the new picture look ok as far as the shaft sticking thru the nut far enough? The relay rod connects to tie rods on both ends, and those are attached to the steering knuckles. 55 Just be sure to dial them down after you are finished playing or your fillings might fall out. Oil Water 21: To make the bushing installation easier, place all of the bushings in a freezer overnight. Now position the jack under the control arm as you did before. There is one of each screwed to each sleeve so be careful and do not try to force a tie rod onto the new sleeve. 24: When installing the shafts in the lower control arms, make sure that the two mounting holes in the shaft are on the same end as the stabilizer bar end link mount. Fuel Inlet This new design can be found in all 19801982 Corvettes. The difference in pumps is more about pump reservoir shape, fittings and shaft type than anything else. 55 Visit our showroom to setup an appointment to have your Corvette tuned, accessorized, enhanced or more. Universal This bolt has a 13/16- inch head. This illustration shows some but not all of the major parts in a Posi-Traction unit.1. This photo shows a typical pinion bearing with a crush sleeve between the inner and outer bearing. 09: The stabilizer bar end links can be removed along with the stabilizer to frame bushings and brackets. 04:Loosen the power steering pump hoses from the control valve and let them drain into a container. Trestle Systems 2470 Island Dr, Suite 308 Spring Park, MN 55384 Slowly raise the jack making sure the spring stays seated in the control arm. The C2/C3Corvette has two identical tie rod assemblies that connect the left and right steering arms to the steering relay rod. 54.23 N-m. Years: 1984-1996. Bolts 28, Upper Control Arm to Frame Reassemble the powdercoated arms. The Fora platform includes forum software by XenForo. Slide the control arm steel bracket through the two bolts and thread on the 11/16-inch nuts. (See Photo #16A.) Zora was exactly what Corvette neededhe was very European, a trained engineer, and passionate about sports cars. Standard non-performance Corvettes are fitted with a front antiroll bar that is designed to provide a smooth ride. All of the light rust damage has been repaired. Housing The 19801982 automatics use 12-mm x 1.75 x 10.9 x 35-mm bolts and 19801981 4-speeds use 12-mm x 1.75 x 10.9 x 80-mm bolts. You need to have properly functioning brakes with no thumping or pulsating from out-of-spec rotors. The outer case material changed to aluminum in 1980 to reduce the weight of the rear suspension. 24, Upper Control Arm, Shaft Bolts Your completed front suspension should look like this unit, which is installed on a 1980 Corvette. Classic C2 and C3 Vettes have a conventional Saginaw worm-and-sector steering gear, which does the job quite well unless you'd prefer less steering effort. The measurement should be .006 to .008 inch. 40: The stabilizer bar end link kits can be assembled and installed. 25, Shock Mount Bolt (Upper) 40, Shifter Levers to Shafts Van Steel constructed this tool to spin the Posi-Traction unit on a jig that is mounted to a post. Caliper ft. and install cotter pin. 30, Upper New clutches usually cure this problem. 17: On the lower control arm, remove the rubber bumper and mounting plate. To check the gear pattern, hold the yoke with one hand and turn the ring gear back and forth with the other hand and a 9/16-inch wench on the ring gear bolt. The easiest way to do this is to make a support using 1 3/4 or 2 pipe (fence post will work). 45, Front Bumper Bolts The C3 AIM sheet for tie rod clamping indicates that when you tighten the adjuster tube Heads 23: Place the control arm in the press and install one bushing using a 1 5/16 socket to press the bushing into place. Oil Mounting Bolts A J tool from General Motors is required to accomplish this task. in/lbs, Stabilizer Bar Link nuts These shims will have to go back in their same location to keep the front end aligned. You are now ready to remove the dash assembly. Four bolts with 9/16-inch heads fasten both strut rods. If one wheel loses traction the clutches engage and lock both wheels to provide added traction. Just try one with a different thread. Use a mallet to carefully tap the side bearings into the case. If you take two shims out of one side, for example, you must place the same number onto the other side. 65, Spring Link Bolt to Torque Arm.- The shaft is fitted with rubber bushings. Before attempting to [Click here to read more], Choosing big-block cylinder heads depends entirely on the application. Pinion gears5. 2, Wheel Nuts If your backlash is too large or too small you can shift the shims from one side to the other. If the cotter key hole doesnt line up, adjust the nut until the hole is located. If you find that the ball joint was bolted in place, then you know the ball joint had been replaced sometime in the past. The dust caps are used to cover and protect the front wheel bearings. Transmissions | O'Reilly Auto Parts A piece of wood or a half piece of pipe is placed on the inside of the control arm to keep the arm from bending while the bushings are being pressed into the control arm. This has to be done with the weight of the car on the suspension. SAFETY NOTE: To minimize any danger, you may want to use a coil spring compressor tool available at any tool rental or auto parts store to help with the coil spring removal. Rod Cap Contact us here24 hours a day 7 days a week. $61.99 Each. There's the 1963-'74 "long-neck" Saginaw pump, which is clearly different than the "canned-ham" 1975-'82 Saginaw pumps to follow. They are attached to the frame between the upper control arms with one bolt. Spray the flared mounting end with silicone to make installation easier. It is fine, once tight the nut can be removed and the arm will never fall off. It is important to make sure that this seal is correctly seated into the top of the differential housing. You use shims to make it match the desired pattern. Outlet When you disassembled the frame, you paid particular attention to how many shims were installed before removing them. This puts the trailing arm in the correct ride height position and makes putting the half-shafts and strut rods into the car much easier. Manifold This will ease installation. (Photo Courtesy Van Steel). Supporting the center of the dash is critical so as to not crack or damage it [Click here to read more], General Motors, like all the other car manufacturers of the time, did not put much valuable information on the vehicle identification number (VIN) plate. 35 This bumper is designed to hit the lower frame rail if the suspension is fully compressed; this helps avoid damaging any suspension components if a bump is taken too hard. He was quickly promoted to [Click here to read more], It was much easier to stockpile Muncie spare parts and cores in the 1970s than it is today. 30, Mount Bolts Install the wheel bearing dust cap along with the caliper bracket and dust shield. Torque Use a 1/2-inch-drive torque wrench with a 7/8-inch nut and torque it to 75 ft-lbs. The lower control arm shaft and bushings remove in the same way except you will need a 7/16-202 cap screw to install in the end of the shaft. Torque these bolts to 70 ft-lbs with a 5/8-inch socket. The good people at Zip Corvette Parts, 8067 Fast Lane, Mechanicsville, VA 23111, 1-800-962-9632, were able to supply us with every part we needed. Our inventory selection includes new pitman arms and slotted hex nuts, along with pitman arm to steering box nuts with washers to fulfill your Corvette restoration needs. Manifold The suspension must have time to settle on the springs before these bolts are tightened. Now mount the stabilizer bar and brackets to the frame. The strut rods attach to the differential bracket with an adjustable camber bolt with two reducing washers inside the bushing on the differential side only. PDF 1955-1964 STEERING LINKAGE IDENTIFIED - Chevy Classics Club Torque to specs. If restoration is your goal, your choice is limited to locating the correct casting for your original engine. Removing Pitman arm from steering box 1,948 views Apr 5, 2018 Like Dislike Share Save Fun with cars - mostly Corvettes 640 subscribers Frame off refresh of a 1974 Corvette. This will allow it to fit around the shaft and bushings. After the powdercoating has been applied to the control arm, it is returned to the assembly area. Dont be afraid to hit the heads forcibly because they are designed for this procedure. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 18 This is how toe-out and toe-in are adjusted on the front suspension. In my opinion, this is money well spent. Spark When draining the oil from the differential, check for a burning odor, which indicates overheating of the gears and case. Corvette Tie Rod Adjustment Specs Explained Same spec as the grease zerks. The relay rod connects to the steering box Pitman arm (lower left). You will find the fit, finish and function will work superbly for your restoration. Distributor The endplay on the side yoke should be .005 to .010 inch. Van Steel uses this square piece of aluminum cut to the proper specification to measure the distance between the two upper control arm brackets. Make sure you have the correct bolts. 50 A torque converter system concept of driver, driven and belt member, the opposing halves or sides of each member being unequal in angle.
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