c3 corvette pitman arm torque

In the pitman arm thread several members talked about removing and rebuilding their steering gear. 03: We are going to remove the entire steering linkage as one unit. Two 7/16-13 x 214-inch bolts secure the upper control arm to the frame. This new design can be found in all 19801982 Corvettes. If restoration is your goal, your choice is limited to locating the correct casting for your original engine. Torque to 25 lb. Replacement of this system is straightforward because Chevrolet made it so simple to service. Main In addition it houses the front wheel bearings, brake rotors, calipers, and brake lines. Run the steering wheel lock to lock several times to bleed out air. 34: Install the new rubber insulators and sleeve into the steering ram frame mount. in/lbs, Carrier to Frame Let's get started. 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. The shims will be installed later; do not put them in now. 20: If you want to freshen up the control arms for a new look, thoroughly clean them and spray 2 or 3 light, even coats of Eastwoods Underhood Black. 35 Shocks lose their effectiveness slowly, so keep this mileage in mind when you are budgeting for maintenance. 35: Assemble the tie rods and sleeves. The fluid pressure reduces the effort it takes to turn the steering wheel. on the castle nuts I'm planning to use the torques specified in the AIM. Use a 1/2-inch-drive torque wrench with a 7/8-inch nut and torque it to 75 ft-lbs. You might have to wait until the weight of the engine compresses the springs enough to install the links, or have some friends sit on the frame to help make the connection. Connect the anti-roll bar to the lower control arm via an end link on each side of the front suspension. Now you have a special control arm support tool. The shock absorber is inserted from the bottom of the lower control arm and secured with two bolts in the front suspension. Even if you use the same shims in the same location, always take your completed Corvette to an alignment shop. 150 Tighten the control valve clamping bolt and assemble the ball stud to the Pitman Arm. Zora was exactly what Corvette neededhe was very European, a trained engineer, and passionate about sports cars. 60 Pan to Crank Case The pump is connected to the power valve and the power steering cylinder. Clutch discs9. Be careful to not over tighten them, as it will damage the roller bearings. drag link (center link) - part #3740402 (See the part in the middleof Photo #12.) PDF Revised: 28JL2009 STEERING WHEEL & STEERING SYSTEM CENTERING PROCEDURE The spring should look like this when installed in its correct position. Housing I call it a refresh. Be sure to select the correct front spring for your particular model and/or application. Trestle Systems 2470 Island Dr, Suite 308 Spring Park, MN 55384 This spring is under a lot of tension and might require the use of sandbags to be placed on the frame to help attach these end links. Place a dial indicator over the rotor to to verify rotor trueness. Differential 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. 50 If your original differential is not making noise and does not show any evidence of abnormal wear, reinstall the old shims. Install a French lock that serves as a washer. Two hydraulic hoses connect to the ram and provide fluid pressure to make the unit operate. If they pass the inspection, send them to the powdercoating shop so their surfaces can be powdercoated to prevent deterioration. 30, Upper This helps break in the limited-slip differential before it is put into service. Then press the second bushing into the arm or onto the shaft. After the oil has been drained, remove the back cover on the differential. After you have installed the first bushing, install the cross shaft into the arm. Push a rubber bushing onto the upper shock strut until it seats against the frame. Both are now ready to be installed into the frame. Use the same procedure on these bolts as discussed in step 2 above. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Make sure the sponge washer is installed. 02: Jack the front of the Corvette up and let the front suspension hang. To start, place a pair of locking pliers on one end of the leaf spring. Push the spring up into the upper control arm spring well in the frame. 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. Plugs Spark If it is not properly seated use a pipe wrench to rotate the spring into the correct position. 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. (This will allow you to drive the car without doing any real damage to the front tires and suspension.) 1963-1982 Corvette Pitman Arm With Power Steering This won't happen if you pay strict attention to how the lines and hoses are routed and installed before taking the system apart. Install the outer bearing and follow that with a fl at washer. Product Details. 13906-C Denton Drive. 65, Wheel Nuts 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 parts are then sent to the powdercoating shop to have their surfaces covered and protected. Drop the end link into the opening at the rear of the trailing arm. At the time, emissions standards were tightening and General Motors was hard-pressed to increase fuel economy across the board for their production vehicles. 15, Lower Ball Joint Nut Whenever there is a need, want and use for a torque sensitive drive system device that is infinitely variable from engagement . Three basic types of Saginaw power steering pumps were used in C2 and C3 Corvettes. Four 1/2-inch or 9/16-inch bolts, depending on the year the car was built, fasten the brackets to the frame. Free shipping on many items | Browse your favorite brands | affordable prices. Slide the control arm steel bracket through the two bolts and thread on the 11/16-inch nuts. 80 Slide the bushings onto the stabilizer bar and into place. This bolt has a 13/16- inch head. 30, Pressure Plate Bolts The difference in pumps is more about pump reservoir shape, fittings and shaft type than anything else. All of the light rust damage has been repaired. Ford used this Bendix-design "power-assist" steering design on a wide variety of vehicles ranging from the humble Falcon to the behemoth Lincoln. Corvette Central Project Split Mod Part 3: Chassis | CC Tech Oil This car received a new steering knuckle, wheel bearings, and brake rotor. You are on the upper end of the torque range with your 150# reading. The new shock runs up the middle of the spring and is attached to the upper frame and the lower control arm. I just installed my new power steering box and pitman arm. Oil Your completed front suspension should look like this unit, which is installed on a 1980 Corvette. This cutaway of a C3 differential reveals the components to inspect when the rear case cover is removed. High Quality Products. However, cornering speed is greatly increased with bigger units. The clutch discs and their preload springs upgrade an 'open . 1963-1982 Corvette Front and Rear Suspension Assembly. 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. Refurbished units are fairly inexpensive and return a Corvettes steering to its original responsive feel. They start the process by disassembling the old parts. Worn Posi-Traction clutches often chatter at low speeds when making a sharp turn. Use engine assembly lube to perform this task. New parts have been welded into place by a professional Corvette repair shop. The recirculating ball unit is attached to an arm connected to a relay rod. The block is attached to the Pitman arm gear that turns the steering system when it moves back and forth. Insert it through the control arm steel shaft from the top. Removing and Reinstalling 1965-82 Corvette Rear Spindles - Duntov Motor A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Use two 11/1616 x 7/8-inch bolts to attach the front caliper bracket and dust shield to the knuckle. Torque Get the best deals on Pitman & Idler Arms for Chevrolet Corvette when you shop the largest online selection at eBay.com. 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. Once they are snug, go one-quarter turn more with a wrench. 05: Remove the power steering ram retaining nut from the mounting bracket. Install the nut and tighten it until the hub barely turns. Shop 1968-1982 C3 Corvette Suspension Control Arm at Top Flight Automotive. Manifold The measurement should be .006 to .008 inch. 17: On the lower control arm, remove the rubber bumper and mounting plate. You can also potentially get hydraulic lines backward during installation from the control valve to the ram and steering becomes erratic quickly. The relay rod also connects to the idler arm (far right). Torque the side caps to 60 ft-lbs. Apply silicone lubricant before installing the seal gear into the housing. Install pinch bolt being certain that it aligns properly with the machined slot in the relay rod. Required fields are marked *. Just try one with a different thread. This should be part of your routine maintenance check under the car. The upper control arm bushings are now fitted with new rubber units. 30 Torque them to 30 ft-lbs. Place a solid bar such as a damaged pin (shown) on the driveshaft yoke. Any accident damage or rust that has eaten through the frame has been cut out. The ball joint rivet heads are ground down flush and then chiseled out of the upper control arm with an air chisel. 12 It is fine, once tight the nut can be removed and the arm will never fall off. When you disassembled the frame, you paid particular attention to how many shims were installed before removing them. 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. Cylinder The rods mount under the differential and connect to the trailing arms on the same bracket as the lower shock mount. Shaft to Wheel Spidle 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. When the pump shaft is flush with the inner lip of the pulley, it is seated. Raise the differential and cross frame with the floor jack until you can secure it to the frame with two 5/8-inch bolts. Flywheel Housing Cover 40, Shifter Levers to Shafts 20, Drain Plug The major mechanical components have now been correctly installed into your refurbished frame. To reassemble the trailing arms, simply reverse the disassembly procedure discussed in Chapter 6. 65, Sway Bar Link Brackets: Bolts Input from the steering gear box actuates the hydraulic valve to make the cylinder act in the direction you chose. You will also need a shop, component and assembly manual for your year Corvette, a hydraulic jack, jack stand, and tools. Sometimes this sounds a lot easier than it actually is. As you raise the jack, position the upper ball joint into the spindle. Each outer end of the spring is connected to the rear of the trailing arm with a link. One Good Turn: Rebuilding C2 and C3 Steering Boxes - MotorTrend 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. 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. 30, Torque Arm to Frame (See Photo #16A.) Water 11: Loosen the upper control arm mounting bolts and carefully remove the shims. 95, Disc Brake Caliper in/lbs, Carrier Front Support to "X" Member With the center of the spring secure, install the spring end links. 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. Clamp Insert a cotter key in the provided hole. specifications for 68-82 Corvettes, Front Wheel Bearings Four 9/16-inch bolts fasten the half-shaft to the trailing arm bearing. 1963-1982 Power Steering Valve, Ram & Pump Rebuild - Corvette Magazine Once they are snug go one quarter of a turn more. Tolerances of .005 or less are the runout target. The differential is solidly mounted to the frame and is connected to the engine with a driveshaft. It is fine. Low fluid greatly increases the pressure it takes to turn the wheel and quickly burns out the power steering pump if oil is not added. C3 Corvette Trailing Arm Bolt Question? 1963 - 1982 Corvette: Technical Article: In-Vehicle Corvette Steering Automotive Torque Specifications by Model - TorkSpec - Knowledge for Camber If the cotter key hole doesnt line up, adjust the nut until the hole is located. Outer This would once again be a good time to solicit the help of a buddy to aid in its removal. Step-3: Install Nut on Control Arm A 9/16x18x2532-inch bolt secures the rear lower control arm to the frame. There's no advantage to extra threads showing beyond the nut on any fastener. Pinion lock screw and washer4. After the shims have been installed, attach a dial indicator to the differential housing to check the gear backlash. Clip off any excess wire with a pair of cutting pliers. 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. 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. 90 Gary 69 vert 350 M20-373's 72 coupe 350,TH400,336's. Reply . A J tool from General Motors is required to accomplish this task. Two 3/8-24 x 7/8-inch bolts secure the steel shafts that are included on the refurbished upper control arms. Three bolts fasten the steering box to the left side of the frame. The upper control arms are used to adjust the cars front suspension caster and camber settings. 1963 - 1982 Corvette Idler Arm C2 C3 Midyear NEW (Fits: Chevrolet Corvette) $44.00. 07: After the Pitman arm has been separated from the control valve, the whole steering linkage will fall to the floor in one unit. This job is easier if someone is helping. 80 Subtle changes were made to the rear frame to accommodate this new differential. This is a good procedure to complete before taking the car to the alignment shop. 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. Particularly problematic with C2/C3 power steering systems is control valve adjustment and leak issues. IN VEHICLE C2/C3 CORVETTE STEERING GEAR ADJUSTMENT. Filed Under: C3 Corvette Restoration Guide, Chevy Tech Tips, The 700-R4 transmission first came into production in the early 1980s. If using a differential rebuilding kit, it includes a dye to help determine the gear mesh pattern. Because quality is so critical, Lonestar Caliper rebuilds all of its power steering pumps, rams, control valves and steering gears in-house. We call it power-assist because it provides hydraulic assistance to the Corvette's existing steering system. Profile. That design remained virtually unchanged for the next 20 years. On used gears it is 15 to 17 inch-pounds. 19:Install a 3/8-242 1/4 cap screw in one end of the shaft. Only because there aren't any threads protruding past the nut and the arm is further from the box than it was on my old box. For the best experience on our site, be sure to turn on Javascript in your browser. Bolts Trailing Arm Bolt Question? | Corvette Forum : DigitalCorvettes.com Pinion gears5. Install ball stud shaft into pitman arm. Keep each set together and mark them for each side along with either front or rear. Lay out the critical components of your front suspension assembly as shown. :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. Manifolds Same spec as the grease zerks. All new pumps come minus the pulley so you will need to use a puller such as this to remove the old pulley from the pump without damage. This is the perfect time to install refurbished or rebuilt components. You will notice that there are both right and left hand threads on the tie rods. Ensure proper installation with the diagram below. Insert the trailing arm bolt through the trailing arm. The aftermarket offers anti-roll bars for both front and rear suspension that are larger and stiffer than the stock anti-roll bars. Rotate the spring until the end rests against the lower control arm spring well dimple. It is much easier to install the strut rod with the trailing arm in this position. 3. The 19681982 Corvette steering linkage was first used in the 1963 Stingray. It is important to make sure that this seal is correctly seated into the top of the differential housing. Housing Be sure the cotter key hole lines up. speaking of torque specs in the AIM, mine seems to show 40-60 lb-in for the upper ball joint castle nut. This cutaway of a C3 steering box shows the inner workings of this critical part. Push the inner seal onto the spindle assembly. Thermostat Press out the bushing into the socket. The front wheels should have a toe-in of 1/8 to 3/8 of an inch. The C3 AIM sheet for tie rod clamping indicates that when you tighten the adjuster tube Use a torque wrench to secure the box with 9/16-inch bolts and torque to 30 ft-lbs. This part takes a lot of stress and should be closely inspected to ensure that it is in excellent condition before installation. C3 Corvette Forums. Cylinder Bolts It is best to sit the differential onto a jack and then install the frame member. Loosen the upper ball joint nut. 30, Leaf Spring Anchor Plate This illustration shows some but not all of the major parts in a Posi-Traction unit.1. 65, Auto 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. 20 All of these components should be evaluated, inspected, and repaired or replaced as necessary. They provided a better ride and reduced the unsprung weight of the rear suspension. We Mounted tires to make this job easier. 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. Vette. This will make the metal contract and make installation much easier. This photo shows a typical pinion bearing with a crush sleeve between the inner and outer bearing. Now with all of the parts, tools and manuals in hand, lets get started1963-1982 Corvette Front Suspension Rebuild: 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. Make sure it sits evenly on the lip of the housing then use a hammer to gently tap the seal into place. C3 C4 C56 C56-A C59 C6 C66M-R CD4E Chrysler CIB5 Cruise-O-Matic . Torque Arm Throttle Cable Included No Yes Transfer Case Assembly Included . The worm gear retainer and the Pitman shaft cap can be installed and torqued to specification according to your assembly manual. 70 25, Lower 45: The last thing you will need to do is to check the toe-in of the front suspension. Install the ring gear onto the Posi unit with new Grade 8 bolts and lock washers. 60 This helps keep critical parts within easy reach. Once the spring is securely in both wells, slowly raise the jack to prevent the spring from popping out of the upper and lower spring wells. 20, Joint to Upper Arm Fuel Fitment. Corvette Tie Rod Adjustment Specs Explained Four discs without tabs are on each side. These control arms come ready for installation. 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. Invert the control arm and repeat the process on the other bushing. http://www.chevelles.com/forums/album.php?albumid=2153&pictureid=21505, http://www.chevelles.com/forums/album.php?albumid=695&pictureid=6156, http://www.chevelles.com/forums/album.php?albumid=428&pictureid=4468, http://www.chevelles.com/forums/album.php?albumid=826&pictureid=7810, http://www.chevelles.com/forums/album.php?albumid=834&pictureid=7834. 50, Upper 30, Sway Bar Bracket bolts (to Frame) 25 Now mount the stabilizer bar and brackets to the frame. Yoke. Side bearings7. This aluminum. Final adjustment is complete when the brakes and new parking brake cables have been installed in the car. The front steering system connects to the spindle on each side of the car to provide steering to the front wheels. We now have a rolling chassis ready . Help me fix my sloppy steering. - Corvette Forum 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. C2/C3 Corvette Power Steering Replacement - MotorTrend The Eaton system uses four coil springs, while the Dana utilizes a conical Belleview spring to preload the clutch pack. This tab piece goes onto the side gear first, and then every other disc added to the stack does not have tabs. Find Us. Original-equipment spring rates usually give the best ride if your only intent is cruising with your restored Corvette. When Zora Duntov unveiled the independent rear suspension of the 1963 Corvette, he elevated the American sports car to a world class level. Standard non-performance Corvettes are fitted with a front antiroll bar that is designed to provide a smooth ride. Rod Cap Torque to specs. Then balance the valve. They spin it fifty times to the left and 50 times to the right. The frame has now been completed and rolled outside for a final inspection. It should not bind after installation. Flywheel 06: Disconnect the idler arm bracket from the passenger side of the frame and then use the tie rod separator to remove the control valve stud from the Pitman arm. Specs. 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. 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. Pan to Crank Case They are usually to 1 inch in circumference. This marks the gears with the dye and shows your gear pattern. Remove the wood when this is complete. The ram (shown) is attached to the relay rod. This frame has been carefully placed on four safety stands and four large pieces of cardboard to protect the frame from any scratches. 45, Front Bumper Bolts Arm Cover Maybe I'll snap some pics tomorrow and post them. The trailing arm in this 1969 convertible is being removed so it can be overhauled by Van Steel. 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. 165, Shock Absorber: Camshaft Sprocket 20 Chevrolet Corvette Torque Specifications - TorkSpec - Knowledge for the Remember the coil spring will be pushing down on the control arm with tension. The dust caps are used to cover and protect the front wheel bearings. These shims will have to go back in their same location to keep the front end aligned. Heads Fill oil reservoir to proper level and let the oil remain undisturbed for at least two minutes. Intake 32878 - 53-62 Pitman Arm/3rd Arm Ball Stud. - Corvette Parts Worldwide to Pinion Flange 42: Install the rotors and calipers and tighten the wheel bearings as per the instructions in the shop manual. 35 Do not torque the end cap bolts on the shafts yet. The endplay on the side yoke should be .005 to .010 inch. If you have someone stand on the upper control arm during this procedure, installing the steering knuckle is easier because the suspension is being compressed from above and below. You will see later why we did it this way. A large-diameter steering wheel and skinny, pizza-cutter tires reduced steering effort, but not by much. 30, Strut Rod to Spindle Support 75 (+ to Align Cotter Pin) Filter Do not tighten the two bolts that secure the upper control arms rubber or poly bushings until the car is ready to be driven. Depending on your driving style and the type of shock installed, expect to get 15,000 to 30,000 miles on a new set. Corvette engine front accessory drive packages were revised over time as vehicle design changed. 04:Loosen the power steering pump hoses from the control valve and let them drain into a container. Make sure the guide pin on the spring aligns with the guide hole in the differential. A small retainer at the front of the lower frame holds both front lower control arm bolts in place. The clutch plate stack should set in and therefore be ready for service once the differential is installed in the car. The control arm has a dimple stamped into it and the end of the bottom coil must rest next to this dimple. This is an important area to reinspect before you start installing your parts because the crosspiece that runs under the engine is prone to bending. 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. 30, Mount Bolts My assembly manual calls for the nut to be torqued to 120-160 pound feet. The steering knuckle spindle plays a crucial role in front suspension dynamics. Put the dial indicator on zero; rock the ring gear back and forth to determine how much play it has while the pinion gear remains stationary. They perform an important function. The other side connects to the bearing support leg and the shock mount is pushed through the legs and the strut rod. It is much quicker to exchange your old trailing arm for a refurbished one. Your cam calls the shotsand if it [Click here to read more], Sourcing original big-block parts becomes more difficult every day. 28, Upper Control Arm to Frame Now use a ball joint separator to loosen the ball joint from the spindle. Install the lower washer and rubber bushing onto the shock shaft. Universal Heads Place the limited slip unit in the differential housing. 15: The upper ball joint can be removed by using a drill bit, chisel or die grinder to remove the rivets. Bearing Cap ft. and install cotter pin. If your rotors are new and out of spec, return them to the vendor for a refund. The lower shaft is installed in the same manner although you will have to make another longer control arm support. Mounting Bolts Many Corvette part suppliers sell complete suspension components that have been refurbished.
Dixie Power Outage St George, Turske Serije Movtex Spisak, Articles C