Rear Suspension Strut Rods and Shock Absorbers. This is the perfect time to install the gas tank between the back frame rails. Raise the differential and cross frame with the floor jack until you can secure it to the frame with two 5/8-inch bolts. There's the 1963-'74 "long-neck" Saginaw pump, which is clearly different than the "canned-ham" 1975-'82 Saginaw pumps to follow. Insert the lower ball joint stud into the opening on the steering knuckle. When properly assembled, these power steering systems perform reliably. If the control valve is out of adjustment too much pressure will be applied in one direction or the other and steering will pull left or right. Now that the frame has been returned to your work area, reconfirm your factory frame measurements. Clutch plates10. We call it power-assist because it provides hydraulic assistance to the Corvette's existing steering system. Housing Cover Fitment. Step 1 01: Here are all of the components that Zip supplied for the front suspension rebuild: Springs, power steering pump, ram, valve, hoses, idler arm, drag link, tie rods, sleeves, control arm bushings, bumpers, stabilizer bar bushings, end kits, shocks, and all of the mounting hardware kits. Slowly lower the jack to see if the upper and lower control arms securely hold the coil spring in place. Install the rear brake rotor over the hub and check it for runout to verify that the rotor and bearings are within factory tolerances. 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. Torque the bolts to 70 ft-lbs. The old shaft protruded about 1/8" past the nut and the new one sticks out just a little past flush. This cutaway of a C3 steering box shows the inner workings of this critical part. The 15/16-inch shock mount nut was torqued to 75 ft-lbs. If your original differential is not making noise and does not show any evidence of abnormal wear, reinstall the old shims. Starting in 1963, the VIN denoted coupe or convertible and build sequence. Shot peen the rear trailing arm until all the paint and grime have been removed. As with any major rebuild, you will need more than average mechanical ability and some specialized tools along with factory shop, component and assembly line manuals. 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. Tighten the nuts evenly on both sides. 70, Lower Control Arm Shaft Bolts: The other side connects to the bearing support leg and the shock mount is pushed through the legs and the strut rod. You can adjust the strut rods to change the rear suspension camber setting on your Corvette. It should not bind after installation. 60 Lubricate all of the clutch discs thoroughly on both sides with GM Posi-Traction additive. The rods mount under the differential and connect to the trailing arms on the same bracket as the lower shock mount. 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. After the shims have been installed, attach a dial indicator to the differential housing to check the gear backlash. Zora was exactly what Corvette neededhe was very European, a trained engineer, and passionate about sports cars. Lonestar Caliper power steering pumps are not equipped with drive pulleys, which means you will need to use your existing pulley or order the right one for your application. 80 The relay rod also connects to the idler arm (far right). Ensure proper installation with the diagram below. For the best experience on our site, be sure to turn on Javascript in your browser. Laying them out on your workbench in the proper order will help you identify the correct placement of these parts during reassembly. 02: Jack the front of the Corvette up and let the front suspension hang. Van Steel constructed this tool to spin the Posi-Traction unit on a jig that is mounted to a post. 1-32878 Corvette Pitman Arm/3rd Arm Ball Stud. At the time, emissions standards were tightening and General Motors was hard-pressed to increase fuel economy across the board for their production vehicles. This cutaway of a C3 differential reveals the components to inspect when the rear case cover is removed. Camber in/lbs, Lower Tighten the 11/16-inch locking nuts to 50 ft-lbs. 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. The best place to start is with the shim that came out when it was disassembled. Install the wheel bearing dust cap along with the caliper bracket and dust shield. Other questions? 150 in/lbs The two rear lower control arm attachments must also be securely welded to the frame. It must not slip because it can cause injury if it does. Placing it on a large piece of non-shag gray (or any light color) carpet makes it easier to locate dropped parts. This illustration shows some but not all of the major parts in a Posi-Traction unit.1. On used gears it is 15 to 17 inch-pounds. 20 A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Why tighten more?? You will find the fit, finish and function will work superbly for your restoration. 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. The correct measurement is 26-3/8 inches. Corvette engine front accessory drive packages were revised over time as vehicle design changed. 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. Slowly raise the jack, while the upper knuckle ball joint opening is placed into the top control arm ball joint stud. Zip Corvette sales and customer service representatives are here to serve you during the following hours: Our showroom is open to the public Monday-Friday from 8:30am-5:30pm (EST). After you have installed the first bushing, install the cross shaft into the arm. Axle If you are refurbishing these trailing arms yourself it is wise to include new bearings. I call it a refresh. The large gray carpet remnant makes the reassembly process more comfortable and dropped parts are more easily found. 55 Get the best deals on Pitman & Idler Arms for Chevrolet Corvette when you shop the largest online selection at eBay.com. Replacement of this system is straightforward because Chevrolet made it so simple to service. Outer Carefully continue to tap the seal in place while moving the shim around to ensure that the gap is the same all around. 50 Insert it through the control arm steel shaft from the top. (888) 581-3838 Phone (972) 243-3838 Fax (972) 243-3828 HOURS M-F 9am - 5pm Sat - by appt follow us on Facebook Instructions for Removing and Reinstalling 65-82 Corvette Rear Spindles The following Special Tools are all but REQUIRED to do a proper job: Spindle Knocker (spindle removal tool) Get some friends to sit on the frame as you perform the next part. Pinion thrust washers6. 12 Required fields are marked *. 50, Lower 70, Oil 18, Bracket Bolts Rod Cap They spin it fifty times to the left and 50 times to the right. the power steering fluid whenever you change the transmission and rear axle lubrication, which should be roughly every 30,000 miles. 45, (+ to Align Cotter Pin) Keep each set together and mark them for each side along with either front or rear. 26: Install the new ball joints into the arms and torque them to specs. Observe the coil spring and make sure it stays securely in its upper and lower wells. 30, Strut Rod to Spindle Support 75 (+ to Align Cotter Pin) Ford used this Bendix-design "power-assist" steering design on a wide variety of vehicles ranging from the humble Falcon to the behemoth Lincoln. Also, the distance between the box and pitman arm on the old box was 1/2" and the new setup is 5/8". Install the lower washer and rubber bushing onto the shock shaft. Manifolds In many ways, the camshaft is the command center of the engine. 22: Coat the bushings and the shaft ends with white lithium grease. Four 9/16-inch bolts fasten the half-shaft to the trailing arm bearing. Push the inner seal onto the spindle assembly. Any mismeasurement makes it difficult to align the chassis correctly. Save my name, email, and website in this browser for the next time I comment. Apply some dye according to the kit instructions. Any accident damage or rust that has eaten through the frame has been cut out. Cut it to fit between the inside flange of the control arm. 20, 3/8" Bolts - 65 Be careful; the seal is easily damaged. When they have separated, remove the ball joint nut and pull the control arm out of the spindle. Find Us. To take the desired measurements, refer to the top right photo on page 87. This process is the best for identifying any cracks. The steering box contains worm gears that turn the Pitman arm, which is attached to the bottom of the unit. Manifold Then press the second bushing into the arm or onto the shaft. This frame has been carefully placed on four safety stands and four large pieces of cardboard to protect the frame from any scratches. This is a good procedure to complete before taking the car to the alignment shop. The body was dropped off at the body shop for all the necessary repairs and painting. Torque Oil in/lbs, Stabilizer Bar Link nuts Large tables are an excellent place to organize these pieces. 1963-1982 Corvette Front and Rear Suspension Assembly. The new shock runs up the middle of the spring and is attached to the upper frame and the lower control arm. A large rubber bumper is attached to the lower control arm. Remember that the threaded end of the link kit must point up. This marks the gears with the dye and shows your gear pattern. in/lbs, Carrier to Frame Let's get started. The box output shaft isn't sticking out past the nut as much as the box I removed. The long-neck pump has a keyed shaft and pulley versus the pressed-on pulleys used from 1975-'82. The control arms, spindles and springs should now be in place. Do not tighten the upper and lower control arm bushing bolts yet. New clutches usually cure this problem. Apply silicone lubricant before installing the seal gear into the housing. A torque converter system concept of driver, driven and belt member, the opposing halves or sides of each member being unequal in angle. 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. If you use the original ring-and-pinion gear that was removed the fit does not require much adjustment. Install pinch bolt being certain that it aligns properly with the machined slot in the relay rod. :crazy: It says the lower ball joint nut should be at 70-95 lb-ft with a max of 125 when the slot is lined up for the cotter pin. 65, Wheel Nuts Cars equipped with a big-block require a firmer spring as does the F-41 sports suspension option. Start engine and run only for about two seconds. Standard non-performance Corvettes are fitted with a front antiroll bar that is designed to provide a smooth ride. C3 C4 C56 C56-A C59 C6 C66M-R CD4E Chrysler CIB5 Cruise-O-Matic . They will be tightened and torqued when the completed car is sitting on its wheels and ready to drive around the block. With the C3 rear suspension design, the differential is mounted to the center of the frame and two halfshafts connect to the rear wheels. Water Lower the car and turn wheels right and left on the ground. Use a 5/8-inch wrench to snug these bolts. Depending on your driving style and the type of shock installed, expect to get 15,000 to 30,000 miles on a new set. Distributor Four bolts with 9/16-inch heads fasten both strut rods. Place a solid bar such as a damaged pin (shown) on the driveshaft yoke. 30, Bracket to Carrier If it is not properly seated use a pipe wrench to rotate the spring into the correct position. After the clutches and side gears are installed, insert a thrust washer on each side of the unit.
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