Make sure you have the correct bolts. If the hydraulic lines are not properly seated and tightened in the control valve and ram, they can leak. The 3/4-inch inner camber bolt was torqued to 70 ft-lbs. Once they are snug, go one-quarter turn more with a wrench. Posi case2. Use a 24 or its equivalent to hold the upper control arm up out of the way as you install the rubber bumper. Insert the lower ball joint stud into the opening on the steering knuckle. Why tighten more?? The parts are then sent to the powdercoating shop to have their surfaces covered and protected. Steering knuckle to lower ball joint: 90 Ball joint to control arm fasteners: 25 Upper control arm cross-shaft end cap bolts: 35-40 Upper control arm cross-shaft to frame: Lower control arm cross-shaft end cap bolts: 45-55 Lower control arm rear cross-shaft to frame: Lower control arm front cross-shaft to frame: Idler arm to frame: Drop the end link into the opening at the rear of the trailing arm. Increase engine speed to approximately 1500 rpm. Torque Converters (CVT's) Comet has been manufacturing torque converters for recreational vehicles for over 60 years.Our torque converters are designed and built to withstand the extreme rigors of rough applications. Torque them to 35 ft-lbs. 50, Lower Start engine and run only for about two seconds. This is how the steering knuckle looks when it is properly secured to the upper and lower control arms. We're working with technician Paul Taylor of Hot Rods by Dean in Phoenix, who is going to walk you through the C2/C3 power steering system. Flywheel Also, the distance between the box and pitman arm on the old box was 1/2" and the new setup is 5/8". They provided a better ride and reduced the unsprung weight of the rear suspension. Install the rear brake rotor over the hub and check it for runout to verify that the rotor and bearings are within factory tolerances. When installing the control arm, dont forget to replace the factory alignment shims (two in the rear and one in the front). Manifold Use a long pry bar or long screwdriver to push the lower part of the spring into the lower spring well. Outlet If you are refurbishing these trailing arms yourself it is wise to include new bearings. The shims will be installed later; do not put them in now. When the ball joint stud threads are exposed, install and tighten the nut. Step-3: Install Nut on Control Arm A 9/16x18x2532-inch bolt secures the rear lower control arm to the frame. 130, Rear Bolt 60 Repeat above procedure until oil level remains constant after running engine. Oil Filed Under: C3 Corvette Restoration Guide, Chevy Tech Tips, The 700-R4 transmission first came into production in the early 1980s. Torque these bolts to 70 ft-lbs with a 5/8-inch socket. The installation procedure is the same for all front coil springs. 29: Start the re-assembly by installing the lower control arms first, then install the upper control arms and shims and torque the mounting bolts and nuts to specs on both control arms. Torque the two front bolts to 70 ft-lbs with a 5/8-inch socket. 65, Wheel Nuts Also do not tighten the trailing arm. Recheck the adjustment after putting 100 miles on the car. Rocker It has been said you can move the world with the power of hydraulics. It is much quicker to exchange your old trailing arm for a refurbished one. 34: Install the new rubber insulators and sleeve into the steering ram frame mount. Make sure that they are completely seated. These systems leak at the control valve and they can also leak at the power ram. Torque these bolts to 35 ft-lbs. The springs push against the clutches with more force as the cars speed increases. Simply reverse the disassembly procedure discussed in Chapter 6. When the ball joint is aligned, continue to raise the jack while pushing the ball joint stud through. This should be part of your routine maintenance check under the car. Dont forget to do this; its important. Worn Posi-Traction clutches often chatter at low speeds when making a sharp turn. 75, Lower Shock Mount Bolt Click the button below and we will send you an exclusive deal on this book. 30, Strut Rod to Spindle Support 75 (+ to Align Cotter Pin) They perform an important function. Mounting Bolts Observe the coil spring and make sure it stays securely in its upper and lower wells. Particularly problematic with C2/C3 power steering systems is control valve adjustment and leak issues. 20, Drive Spindle Support to- $14.75 shipping. Van Steel constructed this tool to spin the Posi-Traction unit on a jig that is mounted to a post. Four discs without tabs are on each side. 12 The ideal contact pattern (centered on the teeth) is the drawing in the middle. This would once again be a good time to solicit the help of a buddy to aid in its removal. 28, Upper Control Arm to Frame Water Refurbished units are fairly inexpensive and return a Corvettes steering to its original responsive feel. When Zora Duntov unveiled the independent rear suspension of the 1963 Corvette, he elevated the American sports car to a world class level. Once the knuckle has been pushed into the ball joint stud, secure it with a 3/4-inch nut and torque to 45 ft-lbs. Chevrolet added optional power steering to the Corvette's underpinnings beginning in 1963, encompassing an engine-driven pump, pitman arm control valve, pressure and return hoses, and a power ram to provide assistance in turns. A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Torque these bolts to 100 ft-lbs. 28: The new pump came with a pulley installation tool. Each bolt has a wedge near the head (arrow) that prevents it from moving once the suspension has been mounted. The front wheels should have a toe-in of 1/8 to 3/8 of an inch. The suspension undergoes a lot of stress, and this is the perfect time to rebuild or refurbish these parts before they are reinstalled. The final piece is a shim that determines the side yoke measurement. the power steering fluid whenever you change the transmission and rear axle lubrication, which should be roughly every 30,000 miles. 19:Install a 3/8-242 1/4 cap screw in one end of the shaft. The long-neck pump has a keyed shaft and pulley versus the pressed-on pulleys used from 1975-'82. You can also kick it with your shoe to push it into its deep well. They are fitted with universal joints so they move through the arc of the suspensions travel as it encounters changes in the road surface. 50 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. Similar to a turnbuckle, there are right hand (RH) and left hand (LH) threaded connections at each end of the tie rod adjuster tube. 25 It is much easier to install the strut rod with the trailing arm in this position. Oil Plug A belt drives the power steering pump. Sometimes this sounds a lot easier than it actually is. The bolts that you bagged and tagged when you removed this unit should be the correct size. It is fine. Refer to the Chevrolet Shop Manual or other authorized manuals for the correct assembly and torque information. 35, Brackets to Hub Carrier Our inventory selection includes new pitman arms and slotted hex nuts, along with pitman . 60, Upper 65 45 38: The front shocks can now be re-installed. Small-blocks from 1968 to 1979 use two U-bolts on each side to attach the shaft to the differential, which are secured with 9/16-inch nuts. Service the pump with just enough fluid to submerge the pump inside the housing. We take orders in our showroom or you may call your order in over the phone and we will prepare your items in advance so you do not have to wait. 25, Shock Mount Bolt (Lower) 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. It also has the front and rear suspension and the differential. Note that a shim (.028 in this case) is below the inner bearing and the driveshaft yoke has been attached to the outer part of the pinion bearing. Four 9/16-inch bolts fasten the half-shaft to the trailing arm bearing. This wasn't a GM exclusive. 50, Cross Shaft Bolts The box output shaft isn't sticking out past the nut as much as the box I removed. 80 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. Each part is cleaned, inspected for cracks, aligned, and powdercoated. This bolt has a 13/16- inch head. Add or remove shims that were installed in step 8 on page 105, depending on how far the measurement is from the desired specification. Tighten the nuts evenly on both sides. Also, the distance between the box and pitman arm on the old box was 1/2" and the new setup is 5/8". Power-assisted versions feature a hydraulic pump that is driven off the engine, and it pushes fluid into a ram that greatly reduces the steering effort. 30, Bracket to Torque Arm Tolerances of .005 or less are the runout target. Make sure it sits evenly on the lip of the housing then use a hammer to gently tap the seal into place. Change the power steering fluid whenever you change the transmission and rear axle lubrication, which should be roughly every 30,000 miles. The C2/C3Corvette has two identical tie rod assemblies that connect the left and right steering arms to the steering relay rod. 30, Camber Cam Nut Zora was exactly what Corvette neededhe was very European, a trained engineer, and passionate about sports cars. Count on Zip Corvette for the best quality Corvette Parts available for your 1968-1982 Corvette. Start gathering various bits and pieces, such as small bolts and brake and fuel lines, and place them in your work area. Bolts Lift them and spread the shoes to mount them on the upper pivot bolt. Many Corvette suppliers offer bearing and clutch pack kits that make an overhaul procedure much easier. The date code is irrelevant unless youre really trying to re-create [Click here to read more], If oil is the lifeblood of your engine, then the oil pump and lubrication system are indeed the heart and circulation system of your big-block Chevy. You will find the fit, finish and function will work superbly for your restoration. This differential has been assembled and is ready for installation. Thermostat Place a floor jack under the lower control arm so it rests on the jack. The transverse leaf spring bolts to the differential and is connected to the rear suspension trailing arms. The upper control arm rubber bushing bolts should remain loose until the project has been completed. If one wheel loses traction the clutches engage and lock both wheels to provide added traction. Reliable sources to validate information regarding serial and casting numbers will get scarcer as time passes. The frame has now been completed and rolled outside for a final inspection. Slowly rotate the gears to check for any obvious signs of one gear rubbing on another. In my opinion, this is money well spent. 50, Manual When they have separated, remove the ball joint nut and pull the control arm out of the spindle. 67-69 Firebird/Camaro and 68-74 Nova, Skylark, Apollo, & Ventura Only Throughout the chapter on ram charging, air filters, [Click here to read more], Shortly after the birth of Corvette in 1953, a Russian immigrant named Zora Arkus-Duntov joined Corvette. 03: We are going to remove the entire steering linkage as one unit. Main Install a cotter key through the hole and bend the two wires back to prevent the nut from coming loose (as you did on the lower ball joint). These springs were installed on Corvettes built at the new Bowling Green assembly plant. If your backlash is too large or too small you can shift the shims from one side to the other. Starting in 1963, the VIN denoted coupe or convertible and build sequence. 1963 - 1982 Corvette Idler Arm C2 C3 Midyear NEW (Fits: Chevrolet Corvette) $44.00. Your completed front suspension should look like this unit, which is installed on a 1980 Corvette. Be careful to not over tighten them, as it damages the roller bearings. Use a large piece of pipe or something that is the same diameter as the seal. Now position the jack under the control arm as you did before. in/lbs, Carrier Front Support to "X" Member This is a manual steering application, which is why power steering components are not seen in this photo. This part takes a lot of stress and should be closely inspected to ensure that it is in excellent condition before installation. Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! Lubricate all of the clutch discs thoroughly on both sides with GM Posi-Traction additive. 45: The last thing you will need to do is to check the toe-in of the front suspension. It uses rubber bushings and washers to minimize noise in the car. However, cornering speed is greatly increased with bigger units. 30, Leaf Spring Anchor Plate This simple but effective design is very robust and gives long, trouble-free service when maintained properly. The completed differential now needs to be attached to the frame crossmember. 90 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. 07: After the Pitman arm has been separated from the control valve, the whole steering linkage will fall to the floor in one unit. . Pinion gears5. When you disassembled the frame, you paid particular attention to how many shims were installed before removing them. Oil These are fairly inexpensive and it is a good idea to install fresh bump stops when putting the front suspension together. Pump Fill and bleed the system. The two rear lower control arm attachments must also be securely welded to the frame. With all the new parts installed, you want to have your Corvettes front suspension set to factory specifications. The difference in pumps is more about pump reservoir shape, fittings and shaft type than anything else. The suspension must have time to settle on the springs before these bolts are tightened. This has to be done with the weight of the car on the suspension. When this is done, the sway bar can be removed. New clutches usually cure this problem. (Van Steel uses a special fixture to press the spindle out of the bearing support.) C2 and C3 Corvettes used the same idler arm from 1963-'82 for both manual and power steering applications. Torque to 25 lb. This cutaway of a C3 differential reveals the components to inspect when the rear case cover is removed. Placing it on a large piece of non-shag gray (or any light color) carpet makes it easier to locate dropped parts. This pitman arm isused on all 1958-1964 power steering set-ups and the 1958-1962standard steering set-ups. Install the spindle dust shield gasket onto the spindle. The control arms, spindles and springs should now be in place. Use a 9/16-inch wrench to remove the four nuts that are located underneath the parking brake hardware. The idler arm provides support to the steering system and is connected to the passenger side of the frame. Vette. Torque the two front bolts to 70 ft-lbs with a 5/8-inch socket. Front Cover They start the process by disassembling the old parts. This saves a lot of time during the reassembly process when trying to locate the next part to install onto the frame. 80, (Finger tight and align cotter pin hole.) The endplay on the side yoke should be .005 to .010 inch. Now install the new pump, new hoses, and then tighten the belt to specs. Raise the differential and cross frame with the floor jack until you can secure it to the frame with two 5/8-inch bolts. Add or remove shims to adjust the toe-in or toe-out of the rear suspension. Use a liberal application of silicone on the washer (shown) to make sure there are no differential oil leaks. The relay rod connects to the steering box Pitman arm (lower left). Profile. The old shaft protruded about 1/8" past the nut and the new one sticks out just a little past flush. The thickest shim in your clutch pack (.045 inch) is used to ensure that the bottom part of the seal does not bottom out, which causes leakage. 25 The control arm has a dimple stamped into it and the end of the bottom coil must rest next to this dimple. Do this to both assemblies. This will allow it to fit around the shaft and bushings. 25: After the shaft and bushings are installed, screw the cap screws, lock washers and collars into place. Make sure the spring is properly seated in the control arm so it does not slip. Be careful to not over tighten them, as it will damage the roller bearings. All of the power steering hydraulic hoses are installed. C3 C4 C56 C56-A C59 C6 C66M-R CD4E Chrysler CIB5 Cruise-O-Matic .
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