Now tighten all of the nuts. 40 Ft-Lbs. The pitman arm bends away from the box as it goes down to the center link end. It is critical to catch any imperfections on the workbench and not on the car. After you have installed the first bushing, install the cross shaft into the arm. 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 should be part of your routine maintenance check under the car. Connecting When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Gary 69 vert 350 M20-373's 72 coupe 350,TH400,336's. Reply . 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: 30 Steering is a vital function for the cars safe operation and a worn or failing steering box needs to be replaced. Tighten the nut when the rubber has been slightly compressed on the shock shaft. Fill and bleed the system. I don't think it's upside down. Remember the coil spring will be pushing down on the control arm with tension. 30, Axle Shaft to Diff.. Side Yoke Largest Inventory. High Quality Products. Torque these bolts to 100 ft-lbs. Tolerances of .005 or less are the runout target. If it doesnt, adjust the nut until the opening is located. Install the lower washer and rubber bushing onto the shock shaft. 25 Adjusting the backlash is the best way to eliminate gear noise. 36: With the new steering linkage assembled, measure the length of one side of the old tie rod assembly. Then cut approximately a 1 slot into the pipe. Congratulations! 15, Lower Ball Joint Nut 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. If it is not within this range, the assembly needs to be removed and a different-size shim installed. Backlash occurs when you take your foot off the throttle; you hear a clunking noise coming from the rear of the car. This tab piece goes onto the side gear first, and then every other disc added to the stack does not have tabs. Nicks in the fittings and seats will cause leaks because there's a lot of pressure going on here. It is much quicker to exchange your old trailing arm for a refurbished one. The clutch plate stack should set in and therefore be ready for service once the differential is installed in the car. On used gears it is 15 to 17 inch-pounds. This marks the gears with the dye and shows your gear pattern. 37: Mount the entire steering linkage assembly to the steering arms and Pitman arm. The fluid pressure reduces the effort it takes to turn the steering wheel. Slide the bushings onto the stabilizer bar and into place. Make sure to keep the jack in place securely under the lower control arm. (The front trailing arm bushings have already been installed here.). Exhaust Running the Pitman shaft adjustment screw all the way in will allow you to install the cap completely and then torque to spec. All of the light rust damage has been repaired. The differential is solidly mounted to the frame and is connected to the engine with a driveshaft. The specialty rebuilders that have seen [Click here to read more], Dash Carrier Assembly Removal Spark Use a large piece of pipe or something that is the same diameter as the seal. Five of these discs have tabs. Torque to specs. A C3 Corvettes differential is the centerpiece of the cars rear suspension. Shaft to Wheel Spidle These arms need to be moved up and down during the spring and steering knuckle installation. The relay rod connects to tie rods on both ends, and those are attached to the steering knuckles. 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. Similar to a turnbuckle, there are right hand (RH) and left hand (LH) threaded connections at each end of the tie rod adjuster tube. Place the control arm in a press and support the other end of the control arm shaft with a 1 11/16 socket. 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. Start by using a tie rod separator to separate the outer tie rods from the spindle arm. 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. Two 3/8-24 x 7/8-inch bolts secure the steel shafts that are included on the refurbished upper control arms. It uses rubber bushings and washers to minimize noise in the car. 1-32878 Corvette Pitman Arm/3rd Arm Ball Stud. Once the bolt is attached with the nut and washer, slowly lower the jack. 12 Remember to do both the upper and lower control arm bushings. 38: The front shocks can now be re-installed. Now use a ball joint separator to loosen the ball joint from the spindle. 28: The new pump came with a pulley installation tool. Pulley should not wobble with engine running. Now you will have to support the inside of the control arm to keep it from collapsing. 50 The control valve screws onto the end of the draglink. 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. Read more about our performance and installation facility here. Be careful because the spindle will only be attached at the bottom ball joint and it will try to flop down. The 15/16-inch shock mount nut was torqued to 75 ft-lbs. 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. They provided a better ride and reduced the unsprung weight of the rear suspension. Be sure to select the correct front spring for your particular model and/or application. Housing Start by installing the control valve onto the end of the drag link. 165, Shock Absorber: Camshaft Sprocket 20 Two 9/16-inch nuts secure the links. 45: The last thing you will need to do is to check the toe-in of the front suspension. 23: Place the control arm in the press and install one bushing using a 1 5/16 socket to press the bushing into place. 30, Bracket to Torque Arm Make sure that they are completely seated. Phone (972) 243-3838. Place the frame on four safety stands that are sturdy and protected with pieces of cardboard. This aluminum. Invert the control arm and repeat the process on the other bushing. 60 Torque the bolts to 70 ft-lbs. Other questions? 13: With the jack securely in place under the lower control arm, slowly lower the lower control arm. 90 When draining the oil from the differential, check for a burning odor, which indicates overheating of the gears and case. In the pitman arm thread several members talked about removing and rebuilding their steering gear. The upper control arm bushings are now fitted with new rubber units. Two U-shaped brackets that fit over two rubber bushings secure the antiroll bar to the frame. If the threads engage the entire nut and you torqued to spec, you're good to go. 480 In-Lbs. This bracket is attached to the lower control arm on each side of the front suspension. The design was so successful that it was carried over for the entire C3 production run with only minor changes. This is a good preventive maintenance procedure to makes sure the parts are not dry. This process is the best for identifying any cracks. If your backlash is too large or too small you can shift the shims from one side to the other. Because quality is so critical, Lonestar Caliper rebuilds all of its power steering pumps, rams, control valves and steering gears in-house. Do not stand in front of the spring. The 3/4-inch lower nut was torqued to 40 ft-lbs. The shaft is fitted with rubber bushings. You are on the upper end of the torque range with your 150# reading. 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. 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. Remove the wheel, caliper and rotor. Required fields are marked *. Reassemble the powdercoated arms. If your original differential is not making noise and does not show any evidence of abnormal wear, reinstall the old shims. 07: After the Pitman arm has been separated from the control valve, the whole steering linkage will fall to the floor in one unit. I figger it ain't going no wheres. 80, (Finger tight and align cotter pin hole.) To take the desired measurements, refer to the top right photo on page 87. The suspension undergoes a lot of stress, and this is the perfect time to rebuild or refurbish these parts before they are reinstalled. THE RUGGED 40 SERIES TORQUE CONVERTER is composed of heavy gauge stamped steel to withstand the extreme rigors of rough applications. The 1975-'79 "canned-ham" pump is very similar to the revised Saginaw pump used from 1980-'82. It must not slip because it can cause injury if it does. Grease and pack the inner and outer bearings with wheel bearing grease. When the ball joint is aligned, continue to raise the jack while pushing the ball joint stud through. Caliper It is much easier to do it this way. Now install the new pump, new hoses, and then tighten the belt to specs. Dont be afraid to hit the heads forcibly because they are designed for this procedure. The easiest way to prepare the differential for installation is to place it onto a floor jack. It should not bind after installation. The front wheels should have a toe-in of 1/8 to 3/8 of an inch. . To start, place a pair of locking pliers on one end of the leaf spring. (Photo Courtesy Van Steel). Now you have a special control arm support tool. in/lbs, Carrier Front Support to "X" Member Arm Stud Filter Bypass Valve The weight and type of engine (small- or big-block) largely determines the spring rate of the particular car. When the ball joint stud threads are exposed, install and tighten the nut. Pump Cover Assemble the spring plate and put it into a vise. The upper control arms are used to adjust the cars front suspension caster and camber settings. Corvette engine front accessory drive packages were revised over time as vehicle design changed. 30, Torque Arm to Frame 70, Oil Your objective here is to install fresh bearings, seals, clutch packs, and races to replace any worn parts in the differential. Check theside plate end play again. It is important to make sure that this seal is correctly seated into the top of the differential housing. Fax (972) 243-3828. Transfer this measurement to the corresponding new tie rod assembly. 35 Big-block cars use a different attaching method than small-blocks. Also check the oil for any metal fragments, which tell you a gear tooth might be chipped or broken. 80, Mount Bolts 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! Install the outer bearing and follow that with a fl at washer. Insert it through the control arm steel shaft from the top. 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. 55 05: Remove the power steering ram retaining nut from the mounting bracket. Step 20 20: BALANCING THE CONTROL VALVE: The control valve must be adjusted after being dissembled as outlined in the following procedure: Balancing Instructions Water Whether youre maintaining your Shark Corvette or completing a full restoration, our selection of C3 Corvette Power Steering parts is unsurpassed. This prevents them from loosening and backing out. For autocross or track day events, set the shocks on the firmest setting as this provides the best handling. Same spec as the grease zerks. Connect the anti-roll bar to the lower control arm via an end link on each side of the front suspension. Recheck the side yoke endplay. These shims will have to go back in their same location to keep the front end aligned. This photo shows a typical pinion bearing with a crush sleeve between the inner and outer bearing. In addition, Zip stands behind all of our Corvette parts with our "No-Hassle Guarantee" - That\'s customer service the Zip way! Torque Arm Throttle Cable Included No Yes Transfer Case Assembly Included . Install the side pins with a spring cup and then install the upper spring. Flywheel 120 Then balance the valve. Reliable sources to validate information regarding serial and casting numbers will get scarcer as time passes. Does the new picture look ok as far as the shaft sticking thru the nut far enough? Lay out the critical components of your front suspension assembly as shown. 20 The front steering system connects to the spindle on each side of the car to provide steering to the front wheels. in/lbs, Rear Spring to Carrier 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. It is fine, once tight the nut can be removed and the arm will never fall off. Aftermarket suppliers offer a wide range of C3 Corvette shock absorbers. If you find this problem replacing the bearings and shims should correct the issue. This simple but effective design is very robust and gives long, trouble-free service when maintained properly. $61.99 Each. This helps keep critical parts within easy reach. Whether you're maintaining your Shark Corvette or completing a full restoration, our selection of C3 Corvette Power Steering parts is unsurpassed. With the C3 rear suspension design, the differential is mounted to the center of the frame and two halfshafts connect to the rear wheels. This will allow it to fit around the shaft and bushings. It is best to sit the differential onto a jack and then install the frame member. 35 20 Pan Drain Plug If you take two shims out of one side, for example, you must place the same number onto the other side. The upper shock bolts (5/8- and 11/16-inch nuts) were torqued 60 ft-lbs. Install the washer. When lines are backward to the ram you steer left and the ram applies pressure right snatching the steering wheel out of your hands violently. If your rotors are new and out of spec, return them to the vendor for a refund. Loosen the upper ball joint nut. Rotate the Posi clutch pack unit (shown on a jig in step 4) until you have enough room to insert the washer. 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. Use an adjustable micrometer to verify the thickness of any shim before installing it. Installation begins with a new power steering-specific pitman arm, which slips onto the sector shaft like this. 13906-C Denton Drive. Gather all necessary parts that need to be installed onto the frame. Refurbished units are fairly inexpensive and return a Corvettes steering to its original responsive feel. Also do not tighten the trailing arm. Observe the coil spring and make sure it stays securely in its upper and lower wells. 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. Our performance and installation facility is open Monday-Friday from 8:30am-5:30pm (EST). Placing it on a large piece of non-shag gray (or any light color) carpet makes it easier to locate dropped parts. The shock absorber is inserted from the bottom of the lower control arm and secured with two bolts in the front suspension. Two people may be required to reinstall the rear steel spring. The lower shaft is installed in the same manner although you will have to make another longer control arm support. 45 Once the spring has been secured, remove the jack. 45, Front Bumper Bolts 80 in/lbs, Jounce Bumper to Frame If not, you will not be able to install the lower control arms. Pitman to steering cross member nut Idler to pivot nut Idler to steering cross member nut 02 VW Jetta TDI 330K+ miles, 48-52 MPG 03 VW Jetta TDI (Wife Crashed it) 200K+ miles, 40-45 MPG 95 Silverado K2500 6.5L TD Ext Cab, 4x4 Zora was exactly what Corvette neededhe was very European, a trained engineer, and passionate about sports cars. 26: Install the new ball joints into the arms and torque them to specs. 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. The body was dropped off at the body shop for all the necessary repairs and painting. These systems leak at the control valve and they can also leak at the power ram. Two 7/16-13 x 214-inch bolts secure the upper control arm to the frame. This cutaway of a C3 steering box shows the inner workings of this critical part. Two trailing arms are bolted to the frame on each side and held up with a transverse steel spring (1968-1980). The leader in Corvette Parts parts since 1977. Depending on your driving style and the type of shock installed, expect to get 15,000 to 30,000 miles on a new set. Spray the flared mounting end with silicone to make installation easier. The lower control arm has also received new ball joints and new bushings. performance and installation facility here, 63-82 Pitman Arm To Steering Box Nut w/Washer. 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. Once this nut is secure, your helper can exit his or her perch on the frame. Pan to Crank Case Add or remove shims that were installed in step 8 on page 105, depending on how far the measurement is from the desired specification. Simply reverse the disassembly procedure discussed in Chapter 6. 12: Now remove the retaining bolts and take the upper control arms out. Original-equipment spring rates usually give the best ride if your only intent is cruising with your restored Corvette. Push a rubber bushing onto the upper shock strut until it seats against the frame. Clamp 02: Jack the front of the Corvette up and let the front suspension hang. 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. Be careful not to overtighten, as it will damage the roller bearings. 20 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. This Corvette reproduction pitman arm has been manufactured to original factory specifications using today's modern manufacturing techniques. 70. 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. 30, Torque Arm Clutch discs9. Housing Bolts (rear) 40, Front Bolt Install a French lock that serves as a washer. Caliper Cut it to fit between the inside flange of the control arm. to Pinion Flange Place the frame in a low-traffic and well-lit area so it can be safely reassembled. 2628 Views 4 Replies 2 Participants Last post by gtr1999, Dec 13 . The completed steering system looks like this unit underneath a 1972 Corvette. Heads This differential has been assembled and is ready for installation. on the castle nuts I'm planning to use the torques specified in the AIM. Notice that these rotors have been matched to the spindle for trueness with White- Out. Farm tractors were even fitted with it. Power Torque Transmission Mount - A2327. Sometimes the pitman shaft can be twisted inside the gear box. 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. 30, Pressure Plate Bolts Flywheel Crankcase 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. When the pump shaft is flush with the inner lip of the pulley, it is seated. Count on Zip Corvette for the best quality Corvette Parts available for your 1968-1982 Corvette. 14: Loosen and remove the lower control arm retaining bolts and remove the lower control arm and spindle. The 19681982 Corvette steering linkage was first used in the 1963 Stingray. Make sure the sponge washer is installed. *All work requires an appointment. These are fairly inexpensive and it is a good idea to install fresh bump stops when putting the front suspension together. In our case, we just need it to make the steering effort a little easier. 60, Upper This includes the upper and lower control arms, steering knuckle with brake rotor, installed wheel bearings, and coil spring. Notice how the end of the coil spring rests in the lower control arm. Torque 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. The Eaton system uses four coil springs, while the Dana utilizes a conical Belleview spring to preload the clutch pack. The differentials are basically all the same inside, but you find some minor changes during an overhaul. ft. Reconnect the power steering lines to the control valve. 65, Spring Link Bolt to Torque Arm.- Pinion lock screw and washer4. Farmers Branch, TX 75234. (You can also use a large punch or another piece of solid metal.) Oil This is a good time to refurbish or replace the steel control arms. Product Details. Each outer end of the spring is connected to the rear of the trailing arm with a link. The two rear lower control arm attachments must also be securely welded to the frame. The store will not work correctly in the case when cookies are disabled. Once they are snug, go one quarter of a turn more with your wrench. Do not tighten the nuts yet. Clutch plates10. The ram (shown) is attached to the relay rod. As with the top control arm, the lower ball joint is bolted to the steering knuckle with one nut. In addition it houses the front wheel bearings, brake rotors, calipers, and brake lines. Your completed front suspension should look like this unit, which is installed on a 1980 Corvette. Run the steering wheel lock to lock several times to bleed out air. C2 and C3 Corvettes used the same idler arm from 1963-'82 for both manual and power steering applications. Everything is back in the truck awaiting torque. Big-block half shafts from 1968 to 1974 use 9/16 x 14 x 33164-inch bolts and heavy-duty caps. Get some friends to sit on the frame as you perform the next part. Place a dial indicator over the rotor to to verify rotor trueness. They start the process by disassembling the old parts. Torque the two front bolts to 70 ft-lbs with a 5/8-inch socket. Add the right rear bearing support to the unit. C3 Corvette Trailing Arm Bolt Question? Install the screw and tighten to specs. 2, Wheel Nuts Shocks lose their effectiveness slowly, so keep this mileage in mind when you are budgeting for maintenance. The lower control arm has a deep well that supports the bottom of the front suspension coil spring. Profile. 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. 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. Feed the shock through the bottom of the lower control arm and insert the top of the shaft into the opening on the frame. 55 25: After the shaft and bushings are installed, screw the cap screws, lock washers and collars into place. 15, Upper Shock Mount Bolt Press out the bushing into the socket. Refer to the Chevrolet Shop Manual or other authorized manuals for the correct assembly and torque information. Large tables are an excellent place to organize these pieces. About 18-inch pounds is common for this step. The 19681982 Corvettes use a steel coil spring in the front suspension. Because the system is external, everything is easy to access. Find Us. They lock the clutches and provide power to both wheels. There's the 1963-'74 "long-neck" Saginaw pump, which is clearly different than the "canned-ham" 1975-'82 Saginaw pumps to follow.