Now that the frame has been returned to your work area, reconfirm your factory frame measurements. If the threads engage the entire nut and you torqued to spec, you're good to go. Van Steel constructed this tool to spin the Posi-Traction unit on a jig that is mounted to a post. 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. Gary 69 vert 350 M20-373's 72 coupe 350,TH400,336's. Reply . Worn Posi-Traction clutches often chatter at low speeds when making a sharp turn. Once the spring has been correctly installed, install the lower control arm bump stop. Toll Free Order Line. The dust caps are used to cover and protect the front wheel bearings. 37: Mount the entire steering linkage assembly to the steering arms and Pitman arm. Drain Plug This Corvette reproduction pitman arm has been manufactured to original factory specifications using today's modern manufacturing techniques. Supporting the center of the dash is critical so as to not crack or damage it [Click here to read more], General Motors, like all the other car manufacturers of the time, did not put much valuable information on the vehicle identification number (VIN) plate. 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Suspension, Source:ZipCorvette Parts8067 Fast Lane | Mechanicsville, VA 23111 | (800) 962-9632, Your email address will not be published. Oil in/lbs, Carrier to Frame Remove the races and seals and clean the trailing arm in a parts washer to remove the grease and grit. Do not tighten the two bolts that secure the upper control arms rubber or poly bushings until the car is ready to be driven. The major mechanical components have now been correctly installed into your refurbished frame. As you raise the jack, position the upper ball joint into the spindle. 95, Disc Brake Caliper Pressure Plate If not, you will not be able to install the lower control arms. The seals tend to leak if they sit or have high mileage. 30, Torque Arm to Frame The endplay on the side yoke should be .005 to .010 inch. Install the outer bearing and follow that with a fl at washer. Bolts The design was so successful that it was carried over for the entire C3 production run with only minor changes. Plug Spark C3 rear trailing arms are made from boxed steel and welded for strength. 65, Auto The power ram shaft A-bracket attaches to the lefthand framerail. in/lbs, Stabilizer Bar Link nuts (This will allow you to drive the car without doing any real damage to the front tires and suspension.) 45: The last thing you will need to do is to check the toe-in of the front suspension. Turn the wheels (off ground) right and left, lightly contacting the wheel stops. Universal The aftermarket offers anti-roll bars for both front and rear suspension that are larger and stiffer than the stock anti-roll bars. Install ball stud shaft into pitman arm. This will be one of the last bolts to tighten. Water Now tighten all of the nuts. Hand tighten until the bushings are slightly compressed. They start the process by disassembling the old parts. 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 completed differential now needs to be attached to the frame crossmember. IN VEHICLE C2/C3 CORVETTE STEERING GEAR ADJUSTMENT. Once this nut is secure, your helper can exit his or her perch on the frame. Pump After the bushings, ball joint, and steel shaft have been removed from the control arm, the shop inspects for cracks or other damage. A couple of spacer plates are employed between the subframe and framerails. The upper control arms are used to adjust the cars front suspension caster and camber settings. Push a rubber bushing onto the upper shock strut until it seats against the frame. 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. Install the wheel bearing dust cap along with the caliper bracket and dust shield. 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. Shot peen the rear trailing arm until all the paint and grime have been removed. 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: These control arms come ready for installation. Attach all of the power steering hoses. Remember the coil spring will be pushing down on the control arm with tension. 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. 02: Jack the front of the Corvette up and let the front suspension hang. 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. Apply some dye according to the kit instructions. 70 Arm Cover This cutaway of a C3 steering box shows the inner workings of this critical part. in/lbs, Link Bushing Bolts The 15/16-inch shock mount nut was torqued to 75 ft-lbs. Invert the control arm and repeat the process on the other bushing. If you use the original ring-and-pinion gear that was removed the fit does not require much adjustment. 55 Flywheel Pump Cover What the the torque specs of: Pitman/box nut (I read 184 ft/lbs?) Housing 65, Sway Bar Link Brackets: 80 In the pitman arm thread several members talked about removing and rebuilding their steering gear. C2 and C3 Corvettes used the same idler arm from 1963-'82 for both manual and power steering applications. Exhaust Step 20 20: BALANCING THE CONTROL VALVE: The control valve must be adjusted after being dissembled as outlined in the following procedure: Balancing Instructions 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. Once the bolt is attached with the nut and washer, slowly lower the jack. Clutch pack guide8. Yoke. Notice that it is equipped with power steering. Apply silicone lubricant before installing the seal gear into the housing. Repeat above procedure until oil level remains constant after running engine. Observe the coil spring and make sure it stays securely in its upper and lower wells. 30, Strut Rod Bracket to Differential 35 Oil When the pump shaft is flush with the inner lip of the pulley, it is seated. 90 If there is excessive play, add shims to eliminate it. Fax (972) 243-3828. Camber Install the lower washer and rubber bushing onto the shock shaft. If it is not within this range, the assembly needs to be removed and a different-size shim installed. Recheck the side yoke endplay. The springs push against the clutches with more force as the cars speed increases. Use the same procedure on these bolts as discussed in step 2 above. Pan Drain Plug Torque the bolts to 70 ft-lbs. Four bolts in the middle secure it. 60, Control Arm front Pivot Bolt Does the new picture look ok as far as the shaft sticking thru the nut far enough? 26: Install the new ball joints into the arms and torque them to specs. Fuel Once they are snug, go one quarter of a turn more with your wrench. 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. 30, Strut Rod to Spindle Support 75 (+ to Align Cotter Pin) This tool will seat the pulley onto the pump shaft. Our performance and installation facility is open Monday-Friday from 8:30am-5:30pm (EST). Do not stand in front of the spring. (888) 581-3838 Phone (972) 243-3838 Fax (972) 243-3828 HOURS M-F 9am - 5pm Sat - by appt follow us on Facebook Instructions for Removing and Reinstalling 65-82 Corvette Rear Spindles The following Special Tools are all but REQUIRED to do a proper job: Spindle Knocker (spindle removal tool) The transverse leaf spring bolts to the differential and is connected to the rear suspension trailing arms. Be careful to not over tighten them, as it damages the roller bearings. 35, Differential Spring Bolts Shop 1968-1982 C3 Corvette Suspension Control Arm at Top Flight Automotive. It has been said you can move the world with the power of hydraulics. This bumper is designed to hit the lower frame rail if the suspension is fully compressed; this helps avoid damaging any suspension components if a bump is taken too hard. 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. The kits include all of the necessary parts. My assembly manual calls for the nut to be torqued to 120-160 pound feet. 80 Much has happened since our kick-off of the Project. The suspension undergoes a lot of stress, and this is the perfect time to rebuild or refurbish these parts before they are reinstalled. This bracket is attached to the lower control arm on each side of the front suspension. Sometimes the pitman shaft can be twisted inside the gear box. When Zora Duntov unveiled the independent rear suspension of the 1963 Corvette, he elevated the American sports car to a world class level. Ensure proper installation with the diagram below. Housing (You can also use a large punch or another piece of solid metal.) The ideal contact pattern (centered on the teeth) is the drawing in the middle. 150 A J tool from General Motors is required to accomplish this task. 2628 Views 4 Replies 2 Participants Last post by gtr1999, Dec 13 . Refurbished trailing arms include new bearings as part of the price. 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. It is virtually impossible to get this wrong because the sector shaft is splined. After this is done, you will need to bleed the power steering system. Install the nut and tighten it until the hub barely turns. Do not overtighten this nut because the bearing could seize. The most important change occurred in 1981 when the factory installed a composite rear leaf spring. Also, the distance between the box and pitman arm on the old box was 1/2" and the new setup is 5/8". Install the trailing arm into the slot in the frame. Tolerances of .005 or less are the runout target. Contact us here24 hours a day 7 days a week. Because quality is so critical, Lonestar Caliper rebuilds all of its power steering pumps, rams, control valves and steering gears in-house. 39: Coat the inside of each stabilizer bar bushing with white lithium grease. 2, Wheel Nuts 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. Then press the second bushing into the arm or onto the shaft. The rear transverse leaf spring and spring bolts have not been installed. 20, 3/8" Bolts - Move the gears back and forth to check for looseness and play from side to side. I will not describe them here. Tighten the nuts evenly on both sides. Spray the flared mounting end with silicone to make installation easier. Outlet 25, Shock Mount Bolt (Lower) 12: Now remove the retaining bolts and take the upper control arms out. This is also a good time to steam clean the parts and repaint or powdercoat before reinstallation. Use two 1/2-inch bolts and two 1/2-inch nuts to secure the rubber bump stop to the lower control arm. It also has the front and rear suspension and the differential. Notice that these rotors have been matched to the spindle for trueness with White- Out. 30, Camber Cam Nut Free shipping on many items | Browse your favorite brands | affordable prices. Install the spindle dust shield gasket onto the spindle. Verify that each bolt has been properly installed and torqued to specifications by marking them with White-Out. 70, 1/2" Bolts - It connects the upper and lower control arms via two ball joints. Pan to Crank Case 70. If you liked this article you will LOVE the full book. It is fine. Distributor This marks the gears with the dye and shows your gear pattern. I just installed my new power steering box and pitman arm. It is much easier to do it this way. Slowly raise the jack, while the upper knuckle ball joint opening is placed into the top control arm ball joint stud. Tie rod assemblies operate on the principle of the common turnbuckle. Half-shafts connect the differential to the rear wheels. If the hydraulic lines are not properly seated and tightened in the control valve and ram, they can leak. Secure the lower shock with two 1/2-inch bolts and torque to 35 ft-lbs. This includes the upper and lower control arms, steering knuckle with brake rotor, installed wheel bearings, and coil spring. JavaScript seems to be disabled in your browser. We're installing a new idler arm from Lonestar Caliper. This will make the metal contract and make installation much easier. THE RUGGED 40 SERIES TORQUE CONVERTER is composed of heavy gauge stamped steel to withstand the extreme rigors of rough applications. If restoration is your goal, your choice is limited to locating the correct casting for your original engine. This is a good time to refurbish or replace the steel control arms. If you are refurbishing these trailing arms yourself it is wise to include new bearings. This is done with thin shims inserted between the frame and the control arms steel shaft. 25: After the shaft and bushings are installed, screw the cap screws, lock washers and collars into place. The Eaton system uses four coil springs, while the Dana utilizes a conical Belleview spring to preload the clutch pack. These two methods are well described and documented in the service . You can also potentially get hydraulic lines backward during installation from the control valve to the ram and steering becomes erratic quickly. Distributor It is easier to install the lower adjuster and the spring first on the workbench. Use a mallet to carefully tap the side bearings into the case. 50, Upper Ball Joint Nut 25 29: Start the re-assembly by installing the lower control arms first, then install the upper control arms and shims and torque the mounting bolts and nuts to specs on both control arms. Now position the jack under the control arm as you did before. If it doesnt, adjust the nut until the opening is located. Torque the two front bolts to 70 ft-lbs with a 5/8-inch socket. Side bearings7. If you find this problem replacing the bearings and shims should correct the issue. When properly assembled, these power steering systems perform reliably. Coil springs can do a lot of damage if they pop out of the control arm. The bump stop is a triangle of rubber mounted to a metal bracket. 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. 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. 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. 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. 120 10: To remove the upper control arm, start by placing a jack securely under the lower control arm as support. It is much quicker to exchange your old trailing arm for a refurbished one. Start engine and run only for about two seconds. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Your email address will not be published. Refer to the Chevrolet Shop Manual or other authorized manuals for the correct assembly and torque information. Required fields are marked *. Clamp 80 If you take two shims out of one side, for example, you must place the same number onto the other side. Install the rear brake rotor over the hub and check it for runout to verify that the rotor and bearings are within factory tolerances. Pinion thrust washers6. This wasn't a GM exclusive. $14.75 shipping. For the best experience on our site, be sure to turn on Javascript in your browser. Reliable sources to validate information regarding serial and casting numbers will get scarcer as time passes. Use a torque wrench to secure the box with 9/16-inch bolts and torque to 30 ft-lbs. The larger the bars, the more taut the ride. When taking a differential apart, be sure to mark the left- and right-side pieces. New clutches usually cure this problem. Be sure the cotter key hole lines up. Water You will also need a shop, component and assembly manual for your year Corvette, a hydraulic jack, jack stand, and tools. Now you will have to support the inside of the control arm to keep it from collapsing. . This is the perfect time to install the gas tank between the back frame rails. Great Prices. Pinion lock screw and washer4. Product Details. Confirm the drag or load on the pinion by using an inch pound torque wrench. Teeth marks on the Posi- Traction case indicate that the bearings are worn and the pinion gear is hitting the case. Transfer this measurement to the corresponding new tie rod assembly. 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. 65, Spring Link Bolt to Torque Arm.- These systems leak at the control valve and they can also leak at the power ram. This bolt has a 13/16- inch head. The spring should look like this when installed in its correct position. Click Here For Details. You can now use the ball joint separator to separate the spindle from the lower control arm. Lower the car and turn wheels right and left on the ground. Flywheel Mounting Bolts 05: Remove the power steering ram retaining nut from the mounting bracket. The lower control arm has also received new ball joints and new bushings. Reassemble the powdercoated arms. After this is done, your first stop should be the local Corvette alignment shop. Filter 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. The large gray carpet remnant makes the reassembly process more comfortable and dropped parts are more easily found. The tie rod screws into the sleeve and connects to the steering knuckle. 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. These bolts should be torqued to 30 ft-lbs and the tabs on the French locks need to be bent (shown). The ram mounts to the relay rod (right) and connects to a bracket on the frame on the drivers side. Invert the arm in the press. 35 Master The 1975-'79 "canned-ham" pump is very similar to the revised Saginaw pump used from 1980-'82. Pinion gears5. The fourth VIN digit [Click here to read more], HOW TO RESTORE YOUR C3 CORVETTE: 1968-1982, Basic Engine Modifications to Improve C5 Corvette Performance (Part 7), 74 Final Assembly Steps of Your Big-Block Chevy Engine Rebuild, How to Rebuild Your GM Transmission: TH400 Transbrake Guide, Comparing Cylinder Blocks and Fasteners for Chevy Small Block Engines, Chevy Big-Block Performance: Lubrication System Guide, How to Replace the Rocker Panel on a 67-72 Chevy Truck, How to Rebuild Chevy and GM Axles: Step-by-Step, How to Build a Chevy Street Stock Engine for Circle Track Racing, Small-Block Chevy Dyno Tests: Cams & Valvetrain Performance, History of GM Automatic Overdrive Transmissions, How to Source Chevy Big-Block Cylinder Heads, Oil and Lubrication Systems Guide for Big-Block Chevy Engines, 1955-1996 Chevy Small-Block Performance Guide: Camshafts Manual (Part 5), The Ultimate Chevy Big-Block Parts Resource, How to Produce More Power in Your Chevy Small Block Engine, C5 Corvette Brake Upgrades to Improve Performance (Part 5), How to Remove the Dash from a 70-72 Chevelle, C2 Corvette Restoration by the Numbers: What to Look For. Leave it alone. Four 1/2-inch or 9/16-inch bolts, depending on the year the car was built, fasten the brackets to the frame. performance and installation facility here, 63-82 Pitman Arm To Steering Box Nut w/Washer. Phone (972) 243-3838. Two trailing arms are bolted to the frame on each side and held up with a transverse steel spring (1968-1980). 90 Each bolt has a wedge near the head (arrow) that prevents it from moving once the suspension has been mounted. Add the right rear bearing support to the unit. Exhaust 24, Upper Control Arm, Shaft Bolts Get some friends to sit on the frame as you perform the next part. The relay rod connects to the steering box Pitman arm (lower left). 80 Torque Arm Throttle Cable Included No Yes Transfer Case Assembly Included . In my opinion, this is money well spent. The arms are robust but the bearings are prone to failure. 6 watching. If your backlash is too large or too small you can shift the shims from one side to the other. After the clutches and side gears are installed, insert a thrust washer on each side of the unit. 20, Joint to Upper Arm Final adjustment is complete when the brakes and new parking brake cables have been installed in the car. 45, (+ to Align Cotter Pin) Driveshaft and Rear Axles, Lower Control Arm Shaft Bolts Secure it with a hose clamp around the center and then tighten the clamp enough to compress the spring plate so you can slip it through the window (shown). Is your Pitman arm on upside down by chance? They will be tightened and torqued when the completed car is sitting on its wheels and ready to drive around the block. Several well-known Corvette specialty shops offer like-new components at a competitive price that includes a warranty. Two 7/16-13 x 214-inch bolts secure the upper control arm to the frame. The differential is solidly mounted to the frame and is connected to the engine with a driveshaft. 45 Clip off the excess ends with a pair of cutting pliers. 34: Install the new rubber insulators and sleeve into the steering ram frame mount. The specialty rebuilders that have seen [Click here to read more], Dash Carrier Assembly Removal This aluminum. Slowly rotate the gears to check for any obvious signs of one gear rubbing on another. Ford used this Bendix-design "power-assist" steering design on a wide variety of vehicles ranging from the humble Falcon to the behemoth Lincoln. Driveshaft Flywheel 30, Mount Bolts The parts are then sent to the powdercoating shop to have their surfaces covered and protected.
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