c3 corvette pitman arm torque

The relay rod connects to the steering box Pitman arm (lower left). 35: Assemble the tie rods and sleeves. The design was so successful that it was carried over for the entire C3 production run with only minor changes. Connect the anti-roll bar to the lower control arm via an end link on each side of the front suspension. This is a manual steering application, which is why power steering components are not seen in this photo. 33: Mount the idler arm to the other end of the drag link. When taking a differential apart, be sure to mark the left- and right-side pieces. After the bushings, ball joint, and steel shaft have been removed from the control arm, the shop inspects for cracks or other damage. Depending on your driving style and the type of shock installed, expect to get 15,000 to 30,000 miles on a new set. Make sure that they are completely seated. Also install the gas tank at this time. Ford used this Bendix-design "power-assist" steering design on a wide variety of vehicles ranging from the humble Falcon to the behemoth Lincoln. 30, Upper Use a locking adhesive on the threads and torque each one to 60 ft-lbs. New parts have been welded into place by a professional Corvette repair shop. Pinion gears5. 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. 60, Upper 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). Torque them to 35 ft-lbs. 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. Toll Free Order Line. 60 15 Drop the end link into the opening at the rear of the trailing arm. Add or remove shims to adjust the toe-in or toe-out of the rear suspension. The control valve screws onto the end of the draglink. 03: We are going to remove the entire steering linkage as one unit. These rubber bushing are strong enough to absorb the impact under most conditions. 50, Manual Power Torque Transmission Mount - A2327. It is fine, once tight the nut can be removed and the arm will never fall off. 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. The Posi-Traction unit has small clutches that are stacked on each side of the springs; they are held in place with these springs. 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). The outer case material changed to aluminum in 1980 to reduce the weight of the rear suspension. Slowly lower the jack to see if the upper and lower control arms securely hold the coil spring in place. Mounting Bolts The parts are then sent to the powdercoating shop to have their surfaces covered and protected. The Fora platform includes forum software by XenForo. C3 C4 C56 C56-A C59 C6 C66M-R CD4E Chrysler CIB5 Cruise-O-Matic . The ideal contact pattern (centered on the teeth) is the drawing in the middle. Screw it on and line up the slot in the valve with the groove in the threads. This configuration is why the small piece of wood was placed in the trailing arm to keep the ride height closer to factory specs. With the C3 rear suspension design, the differential is mounted to the center of the frame and two halfshafts connect to the rear wheels. Do not tighten the nuts yet. 35 50 Find Us. The relay rod connects to tie rods on both ends, and those are attached to the steering knuckles. This has to be done with the weight of the car on the suspension. All of these components should be evaluated, inspected, and repaired or replaced as necessary. 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. Once they are snug, go one quarter of a turn more with your wrench. You can also kick it with your shoe to push it into its deep well. It is virtually impossible to get this wrong because the sector shaft is splined. Do not overtighten this nut because the bearing could seize. Cars equipped with a big-block require a firmer spring as does the F-41 sports suspension option. Removing Pitman arm from steering box - YouTube Install and adjust the parking brake assembly prior to mounting the rear brake rotor. Install the washer. Use a 1/2-inch-drive torque wrench with a 7/8-inch nut and torque it to 75 ft-lbs. Simply reverse the disassembly procedure discussed in Chapter 6. The measurement should be .006 to .008 inch. When properly assembled, these power steering systems perform reliably. Oil Now position the jack under the control arm as you did before. Front Cover New ball joints with rubber or polyurethane bushings are included in the rebuild process. Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! The 19681982 Corvettes use a steel coil spring in the front suspension. Placing it on a large piece of non-shag gray (or any light color) carpet makes it easier to locate dropped parts. 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. Torque sensitive drives are particularly suited to those applications where immediate response to torque demand is required for down shifting and engine speed is ideally maintained at its peak rpm. The upper shock bolts (5/8- and 11/16-inch nuts) were torqued 60 ft-lbs. Now torque to specs. 41: Re-pack the front wheel bearings and install them into each rotor along with the grease seals. the power steering fluid whenever you change the transmission and rear axle lubrication, which should be roughly every 30,000 miles. A new ball joint is installed and the steel shaft receives new rubber or poly bushings. The relay rod also connects to the idler arm (far right). Great Prices. Cylinder Bolts Be careful because the spindle will only be attached at the bottom ball joint and it will try to flop down. I will not describe them here. The seals tend to leak if they sit or have high mileage. After this is done, your first stop should be the local Corvette alignment shop. 70, Rear Corvette Central Project Split Mod Part 3: Chassis | CC Tech C2 and C3 Corvettes used the same idler arm from 1963-'82 for both manual and power steering applications. If not, you will not be able to install the lower control arms. Subtle changes were made to the rear frame to accommodate this new differential. This is a good time to refurbish or replace the steel control arms. Camber Cautiously tap the side shims into the case to avoid damaging the cast-iron shims. 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. What lubricant / grease did you use when you rebuilt - Corvette Forum 70, Lower Control Arm Shaft Bolts: We're installing a new idler arm from Lonestar Caliper. Start by installing the control valve onto the end of the drag link. (The front trailing arm bushings have already been installed here.). Lubricate all of the clutch discs thoroughly on both sides with GM Posi-Traction additive. When installing the control arm, dont forget to replace the factory alignment shims (two in the rear and one in the front). This saves a lot of time during the reassembly process when trying to locate the next part to install onto the frame. Reinstall the suspension with the same number of shims to return it to its previous setting. Ball Joint Torque Specs - DigitalCorvettes.com Corvette Forums Insert a pickle fork between the trailing arm and the bearing support legs. 20, Drive Spindle Support to- Your completed front suspension should look like this unit, which is installed on a 1980 Corvette. 53-74 Electronic Tachometer Conversion Kit. C3 Corvette Pitman Arm (1968-1982) 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. Remember that the threaded end of the link kit must point up. Install the spindle dust shield gasket onto the spindle. Torque Arm Throttle Cable Included No Yes Transfer Case Assembly Included . A large-diameter steering wheel and skinny, pizza-cutter tires reduced steering effort, but not by much. C3 Chevrolet Corvette Suspension Control Arm | Top Flight 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. Install ball stud shaft into pitman arm. Observe the coil spring and make sure it stays securely in its upper and lower wells. With all the new parts installed, you want to have your Corvettes front suspension set to factory specifications. Comet Torque Converter Clutches & Parts for Go Karts & Mini Bikes 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. The endplay on the side yoke should be .005 to .010 inch. Recheck the side yoke endplay. About 18-inch pounds is common for this step. Check theside plate end play again. A bit of a big-block famine occurred in the 1990s as racers, high-performance street enthusiasts, restorers, and boat builders sucked up every available big-block; recycled [Click here to read more], If you were to read this book without realizing that in almost every instance the goal Im trying to achieve is more horsepower, youd thinkand rightly sothat Im obsessed with airflow. Some even include multistep adjustments to dial in the ride you want. 07: After the Pitman arm has been separated from the control valve, the whole steering linkage will fall to the floor in one unit. Part #: A2327 Line: PTQ performance and installation facility here, 63-82 Pitman Arm To Steering Box Nut w/Washer. Place the frame on four safety stands that are sturdy and protected with pieces of cardboard. 50 70, Upper Make sure to keep the jack in place securely under the lower control arm. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Your email address will not be published. Posi case2. Three bolts fasten the steering box to the left side of the frame. If you use the original ring-and-pinion gear that was removed the fit does not require much adjustment. Whether you're maintaining your Shark Corvette or completing a full restoration, our selection of C3 Corvette Power Steering parts is unsurpassed. Teeth marks on the Posi- Traction case indicate that the bearings are worn and the pinion gear is hitting the case. You can also potentially get hydraulic lines backward during installation from the control valve to the ram and steering becomes erratic quickly. Clutch pack guide8. For autocross or track day events, set the shocks on the firmest setting as this provides the best handling. The 15/16-inch shock mount nut was torqued to 75 ft-lbs. Two hydraulic hoses connect to the ram and provide fluid pressure to make the unit operate. 35, Differential Spring Bolts Bearing Cap Housing to Engine 80 in/lbs, Jounce Bumper to Frame 02: Jack the front of the Corvette up and let the front suspension hang. Housing Bolts (rear) 40, Front Bolt This part takes a lot of stress and should be closely inspected to ensure that it is in excellent condition before installation. Move the gears back and forth to check for looseness and play from side to side. Increase engine speed to approximately 1500 rpm. We left off with the Project Split Mod body on a dolly for transport to the body shop and a severely rusted frame. 28: The new pump came with a pulley installation tool. Clip off any excess wire with a pair of cutting pliers. Whether youre maintaining your Shark Corvette or completing a full restoration, our selection of C3 Corvette Power Steering parts is unsurpassed. Now that the frame has been returned to your work area, reconfirm your factory frame measurements. 18 The frame is light enough for two people to carry it to your work area for assembly. This tool will seat the pulley onto the pump shaft. You can use the social sharing buttons to the left, or copy and paste the website link: https://www.chevydiy.com/c3-corvette-restoration-guide-suspension-differential-reassembly/. Leave it alone. Get the best deals on Pitman & Idler Arms for Chevrolet Corvette when you shop the largest online selection at eBay.com. Each part is cleaned, inspected for cracks, aligned, and powdercoated. Confirm the drag or load on the pinion by using an inch pound torque wrench. The larger the bars, the more taut the ride. Use two 11/1616 x 7/8-inch bolts to attach the front caliper bracket and dust shield to the knuckle. They start the process by disassembling the old parts. The clutch discs and their preload springs upgrade an 'open . Change the power steering fluid whenever you change the transmission and rear axle lubrication, which should be roughly every 30,000 miles. It connects the upper and lower control arms via two ball joints. Make sure the springs coil ends are positioned in their respective slots in the frame bucket and control arm. 120 In addition, Zip stands behind all of our Corvette parts with our "No-Hassle Guarantee" - That\'s customer service the Zip way! 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. Front Suspension: How To Rebuild Your 1963-1982 Corvette Front Suspension, Source:ZipCorvette Parts8067 Fast Lane | Mechanicsville, VA 23111 | (800) 962-9632, Your email address will not be published. When draining the oil from the differential, check for a burning odor, which indicates overheating of the gears and case. It is much easier to do it this way. Three basic types of Saginaw power steering pumps were used in C2 and C3 Corvettes. Place a dial indicator over the rotor to to verify rotor trueness. PDF COMET INDUSTRIAL PRODUCTS - Comet Clutches If your backlash is too large or too small you can shift the shims from one side to the other. 40, Shifter Levers to Shafts Use an adjustable micrometer to verify the thickness of any shim before installing it. The C2/C3Corvette has two identical tie rod assemblies that connect the left and right steering arms to the steering relay rod. The completed differential now needs to be attached to the frame crossmember. This includes the upper and lower control arms, steering knuckle with brake rotor, installed wheel bearings, and coil spring. Shot peen the rear trailing arm until all the paint and grime have been removed. The shock absorber is inserted from the bottom of the lower control arm and secured with two bolts in the front suspension. 63-82 Corvette Power Steering Renew Kits (valve, ram , hoses), 63-68 Corvette Power Steering Relay Rod (drag link), 69-82 Corvette Power Steering Relay Rod (drag link), How to Rebuild 1965-1982 Corvette Rear Trailing Arm & Wheel Bearings, 1963-1982 Corvette Control Arm Bushings and Ball Joint. Nicks in the fittings and seats will cause leaks because there's a lot of pressure going on here. 36: With the new steering linkage assembled, measure the length of one side of the old tie rod assembly. 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. On the Corvette, you have power assist whereby you have a manual type of steering gear box but the drag link is actually comprised of a hydraulic valve and cylinder. Remember to buy springs in pairs because each manufacturer has slightly different production methods that affect spring rate and height. Housing Bolts (front) If your box has high mileage and exhibits free play, it should be exchanged for a refurbished unit with new gears and original equipment adjustments. Assemble the spring plate and put it into a vise. Remove the races and seals and clean the trailing arm in a parts washer to remove the grease and grit. Rear Suspension Strut Rods and Shock Absorbers. These springs were installed on Corvettes built at the new Bowling Green assembly plant. Heads 45, (+ to Align Cotter Pin) 54.23 N-m. Years: 1984-1996. This is also a good time to steam clean the parts and repaint or powdercoat before reinstallation. This cutaway of a C3 steering box shows the inner workings of this critical part. In addition it houses the front wheel bearings, brake rotors, calipers, and brake lines. Replacement of this system is straightforward because Chevrolet made it so simple to service. High Quality Products. 38: The front shocks can now be re-installed. As with the top control arm, the lower ball joint is bolted to the steering knuckle with one nut. speaking of torque specs in the AIM, mine seems to show 40-60 lb-in for the upper ball joint castle nut. The upper and lower control arms secure the coil spring. 09: The stabilizer bar end links can be removed along with the stabilizer to frame bushings and brackets. 80 Shop 1968-1982 C3 Corvette Suspension Control Arm at Top Flight Automotive. All of the light rust damage has been repaired. The upper control arm rubber bushing bolts should remain loose until the project has been completed. The suspension undergoes a lot of stress, and this is the perfect time to rebuild or refurbish these parts before they are reinstalled. 04:Loosen the power steering pump hoses from the control valve and let them drain into a container. The pitman arm bends away from the box as it goes down to the center link end. Start gathering various bits and pieces, such as small bolts and brake and fuel lines, and place them in your work area. If one wheel loses traction the clutches engage and lock both wheels to provide added traction. Torque Use two 1/2-inch bolts and two 1/2-inch nuts to secure the rubber bump stop to the lower control arm. If your rotors are new and out of spec, return them to the vendor for a refund. Why tighten more?? Largest Inventory. If it meets specifications, it is shot peened to remove all accumulated grime and paint. 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. Lift the trailing arm from the rear and place a 1 x 1-inch piece of wood into the same place that the shims go. specifications for 68-82 Corvettes, Front Wheel Bearings Place a floor jack under the spring and slowly lift the spring until you are able to attach a nut to the bottom of the end link bolt. If you marked these parts during disassembly, re-torque the bolts to the same location. C3 Corvette Forums. 1963 - 1982 Corvette: Technical Article: In-Vehicle Corvette Steering Place the new coil spring into the lower control arm seat and frame bucket. This won't happen if you pay strict attention to how the lines and hoses are routed and installed before taking the system apart. These systems leak at the control valve and they can also leak at the power ram. 150 The fl at washer has a notch that matches the one on the spindle to prevent it from turning. Cut it to fit between the inside flange of the control arm. I don't think it's upside down. Once the bolt is attached with the nut and washer, slowly lower the jack. Slide the control arm steel bracket through the two bolts and thread on the 11/16-inch nuts. The 19681982 Corvette steering linkage was first used in the 1963 Stingray. The frame has now been completed and rolled outside for a final inspection. Be careful to not over tighten them, as it damages the roller bearings. 24, Upper Control Arm, Shaft Bolts Thermostat This tab piece goes onto the side gear first, and then every other disc added to the stack does not have tabs. Cross tighten them as you do to secure a tire using the star method. The two rear lower control arm attachments must also be securely welded to the frame. Once this nut is secure, your helper can exit his or her perch on the frame. If it is not within this range, the assembly needs to be removed and a different-size shim installed. 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. Check and make sure you can turn the shaft by hand. Two 7/16-13 x 214-inch bolts secure the upper control arm to the frame. Fitment. Backlash occurs when you take your foot off the throttle; you hear a clunking noise coming from the rear of the car. Standard non-performance Corvettes are fitted with a front antiroll bar that is designed to provide a smooth ride. Our performance and installation facility is open Monday-Friday from 8:30am-5:30pm (EST). Recheck the adjustment after putting 100 miles on the car. Make sure the sponge washer is installed. Gary 69 vert 350 M20-373's 72 coupe 350,TH400,336's. Reply . When this is done, the sway bar can be removed. It also has the front and rear suspension and the differential. When Zora Duntov unveiled the independent rear suspension of the 1963 Corvette, he elevated the American sports car to a world class level. Do this to both assemblies. Chevrolet Corvette Torque Specifications - TorkSpec - Knowledge for the Place a solid bar such as a damaged pin (shown) on the driveshaft yoke. (Van Steel uses a special fixture to press the spindle out of the bearing support.) The power ram shaft A-bracket attaches to the lefthand framerail. Profile. Axle PDF 1955-1964 STEERING LINKAGE IDENTIFIED - Chevy Classics Club Yellow or white dye (or marking compound) is usually found in a differential kit. Trestle Systems 2470 Island Dr, Suite 308 Spring Park, MN 55384 Our inventory selection includes new pitman arms and slotted hex nuts, along with pitman . The dust caps are used to cover and protect the front wheel bearings. Torque these bolts to 70 ft-lbs with a 5/8-inch socket. 1963 - 1982 Corvette Idler Arm C2 C3 Midyear NEW (Fits: Chevrolet Corvette) $44.00. If using a differential rebuilding kit, it includes a dye to help determine the gear mesh pattern. You may have to use a small wrench on the upper shaft to prevent it from turning as you tighten the 9/16- inch nut. Manifold 27, Flywheel to Engine For the best experience on our site, be sure to turn on Javascript in your browser. Specs. If it is not properly seated use a pipe wrench to rotate the spring into the correct position. 13906-C Denton Drive. 17: On the lower control arm, remove the rubber bumper and mounting plate. When Chevrolet introduced the new Corvette in 1963 it was hailed as a technological breakthrough, and when 1968 rolled around the C3 was about as close as one could get to a spaceship on wheels. 14: Loosen and remove the lower control arm retaining bolts and remove the lower control arm and spindle. 65 After the powdercoating has been applied to the control arm, it is returned to the assembly area. Notice where the relay rod is attached to the passenger-side idler arm sleeve. THE RUGGED 40 SERIES TORQUE CONVERTER is composed of heavy gauge stamped steel to withstand the extreme rigors of rough applications. Transmissions | O'Reilly Auto Parts Removing and Reinstalling 1965-82 Corvette Rear Spindles - Duntov Motor The upper control arms are used to adjust the cars front suspension caster and camber settings. Differential Oil Slowly rotate the gears to check for any obvious signs of one gear rubbing on another. This is how the steering knuckle looks when it is properly secured to the upper and lower control arms. If you removed the calipers from the brake hoses, you will need to bleed the front brakes. (outer) Housing The completed steering system looks like this unit underneath a 1972 Corvette. 15, Lower Ball Joint Nut Be careful; the seal is easily damaged. Just try one with a different thread. In many ways, the camshaft is the command center of the engine. Original-spec shocks have a service life thats at the lower range of this estimate, while premium aftermarket shocks last at the upper range. Be sure the cotter key hole lines up. Add a washer and use a socket and ratchet to tighten the 9/16-inch nut onto the shaft. in/lbs, Front: Tap it several times with a mallet or hammer to make sure it is seated properly on the pinion shaft. 35 You are looking for a clearance measurement of .005 to .010 inch. Driveshaft and Rear Axles, Lower Control Arm Shaft Bolts The aftermarket offers anti-roll bars for both front and rear suspension that are larger and stiffer than the stock anti-roll bars. However, if this is not in your budget, at a minimum you need to replace the ball joints and the rubber bushings. 1953-1954-1955-1956-1957-1958-1959-1960-1961-1962 : Alternative Views: Corvette Parts Worldwide Price Guarantee We will meet or beat any advertised price on internet! Use a 13/16-inch socket on the top and a 7/8-inch wrench on the bottom to tighten the bolt. Each outer end of the spring is connected to the rear of the trailing arm with a link. (You can also use a large punch or another piece of solid metal.) 20 This should be part of your routine maintenance check under the car. Your cam calls the shotsand if it [Click here to read more], Sourcing original big-block parts becomes more difficult every day. Fax (972) 243-3828. These two methods are well described and documented in the service manual for your car. Spark Place a long fl at bar onto the head of each bolt and hit the bar with enough force to push the head flush against the frame. C2 Corvette Pitman Arm & Relay Rod (1963-1967) Remember the coil spring will be pushing down on the control arm with tension. Flywheel The front suspension is the perfect place to start reassembling the foundation of your C3. The installation procedure is the same for all front coil springs. 80 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. It is much easier to install the strut rod with the trailing arm in this position. Many Corvette suppliers offer bearing and clutch pack kits that make an overhaul procedure much easier. The lower shaft is installed in the same manner although you will have to make another longer control arm support. Then its removed from the jig and turned around to repeat this process in the opposite direction. Shocks lose their effectiveness slowly, so keep this mileage in mind when you are budgeting for maintenance.

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