Shaft to Wheel Spidle 25 19:Install a 3/8-242 1/4 cap screw in one end of the shaft. 15 The long-neck pump has a keyed shaft and pulley versus the pressed-on pulleys used from 1975-'82. It is fine, once tight the nut can be removed and the arm will never fall off. 21: To make the bushing installation easier, place all of the bushings in a freezer overnight. Fax (972) 243-3828. The larger the bars, the more taut the ride. Housing 1953 to 1962 C1 Chevrolet Corvette front suspension rebuild - MotorTrend 30, Leaf Spring Anchor Plate The clutch plate stack should set in and therefore be ready for service once the differential is installed in the car. Repeat this step on the opposite side. Install a cotter key through the opening and bend back the two wires to prevent the nut from coming loose. A 9/16x18x2532-inch bolt secures the rear lower control arm to the frame. 30, Upper Do not stand in front of the spring. Front Mounting Bolt 65, Ball Joint Attachment Nut Slowly rotate the gears to check for any obvious signs of one gear rubbing on another. Install the ring gear onto the Posi unit with new Grade 8 bolts and lock washers. Press out the bushing into the socket. Install the washer. You can also potentially get hydraulic lines backward during installation from the control valve to the ram and steering becomes erratic quickly. Starting in 1963, the VIN denoted coupe or convertible and build sequence. Torque to 25 lb. 16: After the ball joint is removed, drill the mounting holes out with a 21/64 drill bit to accommodate the new mounting bolts. 17-27, Steering Arm Nuts 53-74 Electronic Tachometer Conversion Kit. The rotor is now ready to be installed. Farmers Branch, TX 75234. Rocker 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. Steering is a vital function for the cars safe operation and a worn or failing steering box needs to be replaced. One bolt holds these arms in place. 1-32878 Corvette Pitman Arm/3rd Arm Ball Stud. Send as many parts as possible to the powdercoating shop in order to get the most for your money. These two methods are well described and documented in the service . This illustration shows some but not all of the major parts in a Posi-Traction unit.1. The measurement should be .006 to .008 inch. Install ball stud shaft into pitman arm. 1963-1982 Corvette Pitman Arm With Power Steering The ram mounts to the relay rod (right) and connects to a bracket on the frame on the drivers side. Install the trailing arm into the slot in the frame. (The front trailing arm bushings have already been installed here.). The Posi-Traction unit has small clutches that are stacked on each side of the springs; they are held in place with these springs. If there is excessive play, add shims to eliminate it. A large rubber bumper is attached to the lower control arm. A large-diameter steering wheel and skinny, pizza-cutter tires reduced steering effort, but not by much. Your friends can now exit the frame. 50, Manual When the pump shaft is flush with the inner lip of the pulley, it is seated. (You can also use a large punch or another piece of solid metal.) Two U-shaped brackets that fit over two rubber bushings secure the antiroll bar to the frame. C3 Corvette Forums. When the ball joint is aligned, continue to raise the jack while pushing the ball joint stud through. Inlet When properly assembled, these power steering systems perform reliably. Driveshaft and Rear Axles, Lower Control Arm Shaft Bolts Now that the frame has been returned to your work area, reconfirm your factory frame measurements. The C3 rear suspension was an engineering breakthrough when introduced in 1963 on the C2. The new shock runs up the middle of the spring and is attached to the upper frame and the lower control arm. Oil Hand tighten until the bushings are slightly compressed. Now install the new pump, new hoses, and then tighten the belt to specs. Outlet The large block moves up and down the shaft as the steering wheel is turned. Placing it on a large piece of non-shag gray (or any light color) carpet makes it easier to locate dropped parts. There's no advantage to extra threads showing beyond the nut on any fastener. Joints U-Bolts The weight and type of engine (small- or big-block) largely determines the spring rate of the particular car. In the pitman arm thread several members talked about removing and rebuilding their steering gear. Input from the steering gear box actuates the hydraulic valve to make the cylinder act in the direction you chose. Flywheel Be prepared for differences in front accessory drive packages on small- and big-block Chevys from 1963-'82, which can affect the compatibility of parts and pulley alignment. 34: Install the new rubber insulators and sleeve into the steering ram frame mount. It is easier to install the lower adjuster and the spring first on the workbench. Drop the end link into the opening at the rear of the trailing arm. 60, Control Arm front Pivot Bolt (See Photo #16A.) Master A torque converter system concept of driver, driven and belt member, the opposing halves or sides of each member being unequal in angle. 30, Camber Cam Nut Our inventory selection includes new pitman arms and slotted hex nuts, along with pitman . 45, Main Bearing Cap 67-69 Firebird/Camaro and 68-74 Nova, Skylark, Apollo, & Ventura Only 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 Start by installing the control valve onto the end of the drag link. in/lbs The bolts that you bagged and tagged when you removed this unit should be the correct size. 18 Tighten the control valve clamping bolt and assemble the ball stud to the Pitman Arm. Two 9/16-inch nuts secure the links. This simple but effective design is very robust and gives long, trouble-free service when maintained properly. If you are not replacing the caliper, you can make a hook out of mechanical wire (or a coat hanger) and let the caliper and hose hang from the frame. If your rotors are new and out of spec, return them to the vendor for a refund. Secure and tighten all lug nuts. It uses rubber bushings and washers to minimize noise in the car. Notice that it is equipped with power steering. The box output shaft isn't sticking out past the nut as much as the box I removed. Remember to buy springs in pairs because each manufacturer has slightly different production methods that affect spring rate and height. Bolts Lay out the critical components of your front suspension assembly as shown. Oil When you service the pump with fluid, keep in mind as fluid gets hot it expands and can overflow out of the pump. PDF Corvette Tie Rod Adjustment Specs Explained Loosen the upper ball joint nut. 165, Shock Absorber: Camshaft Sprocket 20 The relay rod also connects to the idler arm (far right). Place a solid bar such as a damaged pin (shown) on the driveshaft yoke. on the castle nuts I'm planning to use the torques specified in the AIM. 80, Connecting Rod Cap Be careful to not over tighten them, as it will damage the roller bearings. 25, Shock Mount Bolt (Upper) Corvette Tie Rod Adjustment Specs Explained You can also kick it with your shoe to push it into its deep well. $61.99 Each. Pump Bolts If you find that the ball joint was bolted in place, then you know the ball joint had been replaced sometime in the past. These springs were installed on Corvettes built at the new Bowling Green assembly plant. Insert it through the control arm steel shaft from the top. PDF COMET INDUSTRIAL PRODUCTS - Comet Clutches When this is done, the sway bar can be removed. Bearing Cap Camber 32: Now we can start assembling the steering linkage. Slowly raise the jack making sure the spring stays seated in the control arm. 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. That design remained virtually unchanged for the next 20 years. You will also need a shop, component and assembly manual for your year Corvette, a hydraulic jack, jack stand, and tools. 90 60 Manifolds If it is not properly seated use a pipe wrench to rotate the spring into the correct position. Replacement of this system is straightforward because Chevrolet made it so simple to service. This frame has been carefully placed on four safety stands and four large pieces of cardboard to protect the frame from any scratches. This is a very important step to remember. Place the frame on four safety stands that are sturdy and protected with pieces of cardboard. It is important to make sure that this seal is correctly seated into the top of the differential housing. C3 Corvette Restoration Guide: Suspension and Differential Reassembly Housing Torque Converters (CVT's) | Comet Clutches I figger it ain't going no wheres. The carpet stops parts from bouncing under a table or into a small crevice. 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. When taking a differential apart, be sure to mark the left- and right-side pieces. The dust caps are used to cover and protect the front wheel bearings. Big-block cars use a different attaching method than small-blocks. 20 Increase engine speed to approximately 1500 rpm. 1963-1982 Power Steering Valve, Ram & Pump Rebuild - Corvette Magazine It also has the front and rear suspension and the differential. 20, Drive Spindle Support to- Removing Pitman arm from steering box - YouTube These parts reduce the unsprung weight of your front suspension and are just as strong as the stamped-steel factory parts. 18, Bracket Bolts Cross tighten them as you do to secure a tire using the star method. Start engine and run only for about two seconds. Before attempting to [Click here to read more], Choosing big-block cylinder heads depends entirely on the application. Torque the two front bolts to 70 ft-lbs with a 5/8-inch socket. Insert it through the control arm steel shaft from the top. They spin it fifty times to the left and 50 times to the right. You can adjust the strut rods to change the rear suspension camber setting on your Corvette. After the nut is on fully, slowly remove the jack and torque both ball joints to specs and install the cotter keys. Rest the spring on a floor jack and raise it to the differential to attach it with the steel plate and four 13/16- inch bolts. 31: Install the spindle onto the lower control arm and tighten the nut. Torque Arm Throttle Cable Included No Yes Transfer Case Assembly Included . *All work requires an appointment. He was quickly promoted to [Click here to read more], It was much easier to stockpile Muncie spare parts and cores in the 1970s than it is today. It is much easier to install the strut rod with the trailing arm in this position. Each part is cleaned, inspected for cracks, aligned, and powdercoated. Running the Pitman shaft adjustment screw all the way in will allow you to install the cap completely and then torque to spec. Housing When they have separated, remove the ball joint nut and pull the control arm out of the spindle. Pan Drain Plug 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. 18, Door Hinge Bolts Be careful because the spindle will only be attached at the bottom ball joint and it will try to flop down. The shims will be installed later; do not put them in now. These rubber bushing are strong enough to absorb the impact under most conditions. Many Corvette part suppliers sell complete suspension components that have been refurbished. After this is done, your first stop should be the local Corvette alignment shop. The differentials are basically all the same inside, but you find some minor changes during an overhaul. 40, Shifter Levers to Shafts Dec . Add a washer and use a socket and ratchet to tighten the 9/16-inch nut onto the shaft. Heads At the time, emissions standards were tightening and General Motors was hard-pressed to increase fuel economy across the board for their production vehicles. 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. 35, Differential Spring Bolts As you know, both the Eaton 65-79 and the Dana 80-82 Corvette differentials use springs to preload the clutch pack that transfers torque to the unloaded tire. C2 Corvette Pitman Arm & Relay Rod (1963-1967) Use two 1/2-inch bolts and two 1/2-inch nuts to secure the rubber bump stop to the lower control arm. If the cotter key hole doesnt line up, adjust the nut until the hole is located. Corvette "power assist" steering has long been a very effective tool in reducing steering effort while keep us in touch with road feel, which is why Corvettes were equipped with this type of power steering to begin with. in/lbs, Lower Axle As you raise the jack, position the upper ball joint into the spindle. Tie rod assemblies operate on the principle of the common turnbuckle. Install the outer bearing and follow that with a fl at washer. 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. in/lbs, Carrier Front Support to "X" Member Distributor To reassemble the trailing arms, simply reverse the disassembly procedure discussed in Chapter 6. The ball joint rivet heads are ground down flush and then chiseled out of the upper control arm with an air chisel. 65, Wheel Nuts Shot peen the rear trailing arm until all the paint and grime have been removed. 80 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. Intake :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. If using a differential rebuilding kit, it includes a dye to help determine the gear mesh pattern. We Mounted tires to make this job easier. Install the spindle dust shield gasket onto the spindle. Remember to do both the upper and lower control arm bushings. Organize and inventory your parts before starting the assembly process. in/lbs, Link Bushing Bolts Whether youre maintaining your Shark Corvette or completing a full restoration, our selection of C3 Corvette Power Steering parts is unsurpassed. C2 Corvette Pitman Arm & Relay Rod (1963-1967) Books & Manuals Home 63-67 C2 Corvette Parts Steering Systems Steering Linkage Pitman Arm & Relay Rod 17 Items Show per page Sort By 1/2-20 Slotted Hex Nut Price: $1.99 SKU: BL-212 Add to Cart 53-62 Steering Drag Link & 63-76 Relay Rod End Plug Price: $8.99 SKU: SC-533 Add to Cart I just did mine, and I busted a nut with my breaker bar to get it to 150 like you did, and it looks like that. This is the perfect time to install refurbished or rebuilt components. Use a 9/16-inch wrench to remove the four nuts that are located underneath the parking brake hardware. Push the inner seal onto the spindle assembly. This bolt has a 13/16- inch head. A belt drives the power steering pump. It is virtually impossible to get this wrong because the sector shaft is splined. However, if this is not in your budget, at a minimum you need to replace the ball joints and the rubber bushings. Just try one with a different thread. 50 Slide the bushings onto the stabilizer bar and into place. Oil Find Us. This helps break in the limited-slip differential before it is put into service. Main 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. Use a 24 or its equivalent to hold the upper control arm up out of the way as you install the rubber bumper. Oil 65, Spring Link Bolt to Torque Arm.- 14: Loosen and remove the lower control arm retaining bolts and remove the lower control arm and spindle. The lower control arm shaft and bushings remove in the same way except you will need a 7/16-202 cap screw to install in the end of the shaft. Van Steel constructed this tool to spin the Posi-Traction unit on a jig that is mounted to a post. Four 1/2-inch or 9/16-inch bolts, depending on the year the car was built, fasten the brackets to the frame. 24, Upper Control Arm, Shaft Bolts Oil Universal Housing Cover 15, Upper Shock Mount Bolt When you move the steering wheel left or right you are moving a control valve bolted to the pitman arm that directs hydraulic pressure to one side of the power ram (also known as a slave cylinder) at the drag link to assist steering effort. Now mount the stabilizer bar and brackets to the frame. This is the perfect time to install the gas tank between the back frame rails. Rotate the spring until the end rests against the lower control arm spring well dimple. When draining the oil from the differential, check for a burning odor, which indicates overheating of the gears and case. Pinion shaft3. That way when the linkage is installed, the front end alignment will be close enough for you to be able to drive to your local Corvette alignment shop without doing any damage to the front end or tires. The pump is connected to the power valve and the power steering cylinder. 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). 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/. Insert a pickle fork between the trailing arm and the bearing support legs. The block is attached to the Pitman arm gear that turns the steering system when it moves back and forth. 35 1963 - 1982 Corvette: Technical Article: In-Vehicle Corvette Steering Dont forget to do this; its important. Install pinch bolt being certain that it aligns properly with the machined slot in the relay rod. The trailing arm in this 1969 convertible is being removed so it can be overhauled by Van Steel. 20, Differential Mount Bracket 35 70, Upper Rotate the Posi clutch pack unit (shown on a jig in step 4) until you have enough room to insert the washer. Van Steel uses this square piece of aluminum cut to the proper specification to measure the distance between the two upper control arm brackets. For the best experience on our site, be sure to turn on Javascript in your browser. Cylinder 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. We will be focusing on the front suspension in this article and will be replacing all of the major components in a 1978 Corvette. (Van Steel uses a special fixture to press the spindle out of the bearing support.) Connect the anti-roll bar to the lower control arm via an end link on each side of the front suspension. Check theside plate end play again. This is a good time to refurbish or replace the steel control arms. Transfer this measurement to the corresponding new tie rod assembly. Drain Plug Once they are snug go one quarter of a turn more. 43: Lube the entire front suspension ball joints, tie rods, idler arm, power steering control valve, etc. A C3 Corvettes differential is the centerpiece of the cars rear suspension. 50, Upper It is fine. This wasn't a GM exclusive. This has to be done with the weight of the car on the suspension. 09: The stabilizer bar end links can be removed along with the stabilizer to frame bushings and brackets. Be careful not to overtighten, as it will damage the roller bearings. Turn the wheels (off ground) right and left, lightly contacting the wheel stops. The lower shaft is installed in the same manner although you will have to make another longer control arm support. Half-shafts connect the differential to the rear wheels. I call it a refresh. Push the spring up into the upper control arm spring well in the frame. Vette. This tab piece goes onto the side gear first, and then every other disc added to the stack does not have tabs. Make sure the guide pin on the spring aligns with the guide hole in the differential. The ram (shown) is attached to the relay rod. 15, Lower Ball Joint Nut 25, Lower Make sure the springs coil ends are positioned in their respective slots in the frame bucket and control arm. Notice here that the shock absorbers have been mounted and the halfshafts are bolted to the trailing arms and differential. to Pinion Flange 30, Bracket to Carrier Once they are snug, go one quarter of a turn more with your wrench. 30, Axle Shaft to Diff.. Side Yoke Chevrolet Corvette Torque Specifications - TorkSpec - Knowledge for the (Photo Courtesy Van Steel). Place the control arm in a press and support the other end of the control arm shaft with a 1 11/16 socket. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Your email address will not be published. The power ram shaft A-bracket attaches to the lefthand framerail. This is a manual steering application, which is why power steering components are not seen in this photo. 70. It must not slip because it can cause injury if it does. Housing to Engine Once the spring is in the proper position, loosen and remove the hose clamp. C3 rear trailing arms are made from boxed steel and welded for strength. speaking of torque specs in the AIM, mine seems to show 40-60 lb-in for the upper ball joint castle nut. The tie rod screws into the sleeve and connects to the steering knuckle. 41: Re-pack the front wheel bearings and install them into each rotor along with the grease seals. Then balance the valve. Pinion gears5. 55 50 1963-1982 Corvette Front and Rear Suspension Assembly. 30, Strut Rod to Spindle Support 75 (+ to Align Cotter Pin) The lower control arm has also received new ball joints and new bushings. 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. Then its removed from the jig and turned around to repeat this process in the opposite direction. Your cam calls the shotsand if it [Click here to read more], Sourcing original big-block parts becomes more difficult every day. This photo shows a typical pinion bearing with a crush sleeve between the inner and outer bearing. L-82 About 18-inch pounds is common for this step. Pulley should not wobble with engine running. Other questions? Both are now ready to be installed into the frame. JavaScript seems to be disabled in your browser. Make sure the sponge washer is installed. Oil 20, Drain Plug 30 Visit our showroom to setup an appointment to have your Corvette tuned, accessorized, enhanced or more. Refurbished units are fairly inexpensive and return a Corvettes steering to its original responsive feel. Cars equipped with a big-block require a firmer spring as does the F-41 sports suspension option. Even if you use the same shims in the same location, always take your completed Corvette to an alignment shop. 95, Disc Brake Caliper 70 12: Now remove the retaining bolts and take the upper control arms out. The upper control arm bushings are now fitted with new rubber units. 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. Cam Bolt Yellow or white dye (or marking compound) is usually found in a differential kit. 55 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. Maybe I'll snap some pics tomorrow and post them. Also check the oil for any metal fragments, which tell you a gear tooth might be chipped or broken. Sometimes the pitman shaft can be twisted inside the gear box. This new design can be found in all 19801982 Corvettes. Check to make sure hoses are not touching any other parts of the car particularly sheet metal and exhaust manifold. Teeth marks on the Posi- Traction case indicate that the bearings are worn and the pinion gear is hitting the case. 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. 60, Upper Original-equipment spring rates usually give the best ride if your only intent is cruising with your restored Corvette. Use an adjustable micrometer to verify the thickness of any shim before installing it. 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. 36: With the new steering linkage assembled, measure the length of one side of the old tie rod assembly. 4 Items. 07: After the Pitman arm has been separated from the control valve, the whole steering linkage will fall to the floor in one unit. Feed the shock through the bottom of the lower control arm and insert the top of the shaft into the opening on the frame. Run the steering wheel lock to lock several times to bleed out air. The trailing arms house the parking brake, brake calipers, and rotors. There's the 1963-'74 "long-neck" Saginaw pump, which is clearly different than the "canned-ham" 1975-'82 Saginaw pumps to follow. 30: Install the upper control arm bumpers. It has been said you can move the world with the power of hydraulics. 70, Rear To take the desired measurements, refer to the top right photo on page 87. 25 New ball joints with rubber or polyurethane bushings are included in the rebuild process. Recheck the side yoke endplay. If you find this problem replacing the bearings and shims should correct the issue.
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