c3 corvette pitman arm torque

This saves a lot of time during the reassembly process when trying to locate the next part to install onto the frame. Gather all necessary parts that need to be installed onto the frame. Just be sure to dial them down after you are finished playing or your fillings might fall out. Also do not tighten the trailing arm. 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. The transverse leaf spring bolts to the differential and is connected to the rear suspension trailing arms. 20, Joint to Upper Arm If one wheel loses traction the clutches engage and lock both wheels to provide added traction. I just installed my new power steering box and pitman arm. You are looking for a clearance measurement of .005 to .010 inch. Thanks guys. Install the side pins with a spring cup and then install the upper spring. 35 Depending on your driving style and the type of shock installed, expect to get 15,000 to 30,000 miles on a new set. 70, Lower Control Arm Shaft Bolts: document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Your email address will not be published. Your cam calls the shotsand if it [Click here to read more], Sourcing original big-block parts becomes more difficult every day. Count on Zip Corvette for the best quality Corvette Parts available for your 1968-1982 Corvette. Leave it alone. Gary 69 vert 350 M20-373's 72 coupe 350,TH400,336's. Reply . Start by installing the control valve onto the end of the drag link. After the oil has been drained, remove the back cover on the differential. This cutaway of a C3 steering box shows the inner workings of this critical part. The carpet stops parts from bouncing under a table or into a small crevice. The pump is connected to the power valve and the power steering cylinder. Similar to a turnbuckle, there are right hand (RH) and left hand (LH) threaded connections at each end of the tie rod adjuster tube. Tighten the nuts evenly on both sides. 20 The bump stop protects a severe bump or hole in the road. They are usually to 1 inch in circumference. It is easier to install the lower adjuster and the spring first on the workbench. Slowly rotate the gears to check for any obvious signs of one gear rubbing on another. If you removed the calipers from the brake hoses, you will need to bleed the front brakes. Cylinder Pump Cover This helps break in the limited-slip differential before it is put into service. Install the nut and tighten it until the hub barely turns. Tubular upper and lower aftermarket control arms are available from Corvette suppliers such as Van Steel. Driveshaft and Rear Axles, Lower Control Arm Shaft Bolts As with the top control arm, the lower ball joint is bolted to the steering knuckle with one nut. Simply reverse the disassembly procedure discussed in Chapter 6. Fitment. Torque specifications for 68-82 Corvettes FT/LBS (Unless specified) Front Suspension: Rear Axle: Front Wheel Bearings 12 Differential Cover Bolts 50 Upper Ball Joint Nut 70 Driveshaft to Pinion Flange 15 Lower Ball Joint Nut 90 Differential Front Mounting Bolt 65 Ball Joint Attachment Nut 28 Steering Arm to Spindle 70 Brake System: Torque Converters (CVT's) | Comet Clutches The upper and lower control arms should look like this once they have been installed. Install the outer bearing and follow that with a fl at washer. 17: On the lower control arm, remove the rubber bumper and mounting plate. Add a washer and use a socket and ratchet to tighten the 9/16-inch nut onto the shaft. PDF Corvette Tie Rod Adjustment Specs Explained 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. 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. 70, 1/2" Bolts - 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. Make sure it sits evenly on the lip of the housing then use a hammer to gently tap the seal into place. 120 Cylinder Bolts Oil For a better experience, please enable JavaScript in your browser before proceeding. Several well-known Corvette specialty shops offer like-new components at a competitive price that includes a warranty. Our performance and installation facility is open Monday-Friday from 8:30am-5:30pm (EST). These control arms come ready for installation. That design remained virtually unchanged for the next 20 years. 90 30, Leaf Spring Anchor Plate This bolt has a 13/16- inch head. Adjusting the backlash is the best way to eliminate gear noise. 80 If you take two shims out of one side, for example, you must place the same number onto the other side. It is much easier to do it this way. Get some friends to sit on the frame as you perform the next part. 40: The stabilizer bar end link kits can be assembled and installed. Lower the car and turn wheels right and left on the ground. Input from the steering gear box actuates the hydraulic valve to make the cylinder act in the direction you chose. 30, Mount Bolts 95, Disc Brake Caliper Great Prices. 32878 - 53-62 Pitman Arm/3rd Arm Ball Stud. - Corvette Parts Worldwide 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. The idler arm provides support to the steering system and is connected to the passenger side of the frame. The upper shock bolts (5/8- and 11/16-inch nuts) were torqued 60 ft-lbs. 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. In addition it houses the front wheel bearings, brake rotors, calipers, and brake lines. 21: To make the bushing installation easier, place all of the bushings in a freezer overnight. Trestle Systems 2470 Island Dr, Suite 308 Spring Park, MN 55384 30, Pressure Plate Bolts This aluminum. Thermostat Three bolts fasten the steering box to the left side of the frame. Pinion lock screw and washer4. Two trailing arms are bolted to the frame on each side and held up with a transverse steel spring (1968-1980). Clip off the excess ends with a pair of cutting pliers. in/lbs 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). 70. You will see later why we did it this way. It is important to make sure that this seal is correctly seated into the top of the differential housing. 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. Distributor 43: Lube the entire front suspension ball joints, tie rods, idler arm, power steering control valve, etc. Insert it through the control arm steel shaft from the top. 45, (+ to Align Cotter Pin) 2628 Views 4 Replies 2 Participants Last post by gtr1999, Dec 13 . Slide the control arm steel bracket through the two bolts and thread on the 11/16-inch nuts. C3 Corvette Pitman Arm (1968-1982) Place the frame on four safety stands that are sturdy and protected with pieces of cardboard. 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. A C3 Corvettes differential is the centerpiece of the cars rear suspension. 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. Recheck the side yoke endplay. 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. Differential Water 39: Coat the inside of each stabilizer bar bushing with white lithium grease. If there is excessive play, add shims to eliminate it. Side bearings7. Filter Bypass Valve Shown here are a front lower control arm (front) and a rear trailing arm (back). Now use a ball joint separator to loosen the ball joint from the spindle. To take the desired measurements, refer to the top right photo on page 87. Housing Cover Clamp 37: Mount the entire steering linkage assembly to the steering arms and Pitman arm. The lower control arm has a deep well that supports the bottom of the front suspension coil spring. Fill oil reservoir to proper level and let the oil remain undisturbed for at least two minutes. Notice that it is equipped with power steering. This will allow it to fit around the shaft and bushings. Notice here that the shock absorbers have been mounted and the halfshafts are bolted to the trailing arms and differential. Spray the flared mounting end with silicone to make installation easier. GM torque specs for the pitman arm nut is 120-160 ft-lb.2. Laying them out on your workbench in the proper order will help you identify the correct placement of these parts during reassembly. PDF Revised: 28JL2009 STEERING WHEEL & STEERING SYSTEM CENTERING PROCEDURE Manifold Clutch discs9. The tie rod screws into the sleeve and connects to the steering knuckle. Remove the races and seals and clean the trailing arm in a parts washer to remove the grease and grit. The steering knuckle spindle plays a crucial role in front suspension dynamics. If you pull the pitman arm, it is sometimes possible to see the twist in the sector shaft splines. 4 Items. Yoke. This is a good preventive maintenance procedure to makes sure the parts are not dry. These two methods are well described and documented in the service . Bolts 45, Main Bearing Cap This has to be done with the weight of the car on the suspension. Corvette Central Project Split Mod Part 3: Chassis | CC Tech Add or remove shims that were installed in step 8 on page 105, depending on how far the measurement is from the desired specification. Differential We Mounted tires to make this job easier. 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. After the nut is on fully, slowly remove the jack and torque both ball joints to specs and install the cotter keys. The lower control arm has also received new ball joints and new bushings. A 9/16x18x2532-inch bolt secures the rear lower control arm to the frame. Once the spring has been correctly installed, install the lower control arm bump stop. A bit of a big-block famine occurred in the 1990s as racers, high-performance street enthusiasts, restorers, and boat builders sucked up every available big-block; recycled [Click here to read more], If you were to read this book without realizing that in almost every instance the goal Im trying to achieve is more horsepower, youd thinkand rightly sothat Im obsessed with airflow. Push a rubber bushing onto the upper shock strut until it seats against the frame. 20, Drain Plug 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. 50, Upper Ball Joint Nut Housing 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. 50 Trailing Arm Bolt Question? | Corvette Forum : DigitalCorvettes.com Vette. Attach all of the power steering hoses. 25, Lower Then press the second bushing into the arm or onto the shaft. Use a 24 or its equivalent to hold the upper control arm up out of the way as you install the rubber bumper. in/lbs, Drive Spindle Nut 100 (+ to Align Cotter Pin) Oil 60, Upper Make sure the springs coil ends are positioned in their respective slots in the frame bucket and control arm. Do this to both assemblies. Slowly raise the jack, while the upper knuckle ball joint opening is placed into the top control arm ball joint stud. Toll Free Order Line. 12 This would once again be a good time to solicit the help of a buddy to aid in its removal. 42: Install the rotors and calipers and tighten the wheel bearings as per the instructions in the shop manual. This bolt has a 13/16- inch head. Add the right rear bearing support to the unit. Be careful to not over tighten them, as it will damage the roller bearings. The outer case material changed to aluminum in 1980 to reduce the weight of the rear suspension. Rebuild Your C2-C3 Corvette Steering Box With Flaming River Shot peen the rear trailing arm until all the paint and grime have been removed. A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. to Pinion Flange If it is not within this range, the assembly needs to be removed and a different-size shim installed. Install pinch bolt being certain that it aligns properly with the machined slot in the relay rod. Flywheel 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. After this is done, your first stop should be the local Corvette alignment shop. When Zora Duntov unveiled the independent rear suspension of the 1963 Corvette, he elevated the American sports car to a world class level. 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 480 In-Lbs. The relay rod connects to tie rods on both ends, and those are attached to the steering knuckles. Push the spring up into the upper control arm spring well in the frame. 30, Sway Bar Bracket bolts (to Frame) 25 Use a locking adhesive on the threads and torque each one to 60 ft-lbs. Specs. Remove the wheel, caliper and rotor. 70, Oil This puts the trailing arm in the correct ride height position and makes putting the half-shafts and strut rods into the car much easier. Removing Pitman arm from steering box - YouTube Now tighten all of the nuts. Main 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. Rocker 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. Free shipping on many items | Browse your favorite brands | affordable prices. This differential has been assembled and is ready for installation. Torque these bolts to 100 ft-lbs. Once they are snug, go one-quarter turn more with a wrench. 1953 to 1962 C1 Chevrolet Corvette front suspension rebuild - MotorTrend The springs push against the clutches with more force as the cars speed increases. Remember to buy springs in pairs because each manufacturer has slightly different production methods that affect spring rate and height. 30, Bracket to Torque Arm If you are refurbishing these trailing arms yourself it is wise to include new bearings. 130, Rear Bolt Cross tighten them as you do to secure a tire using the star method. Zora was exactly what Corvette neededhe was very European, a trained engineer, and passionate about sports cars. A couple of spacer plates are employed between the subframe and framerails. These bump stops play a very important role in protecting the suspension in case you hit an unexpected bump too fast and the suspension bottoms out. Coil springs can do a lot of damage if they pop out of the control arm. Refurbished units are fairly inexpensive and return a Corvettes steering to its original responsive feel. 35, Brackets to Hub Carrier 53-74 Electronic Tachometer Conversion Kit. Shaft to Wheel Spidle However, if you are just going to use your car for cruising and not racing the factory parts work very well. The fl at washer has a notch that matches the one on the spindle to prevent it from turning. A belt drives the power steering pump. PDF COMET INDUSTRIAL PRODUCTS - Comet Clutches Use a long pry bar or long screwdriver to push the lower part of the spring into the lower spring well. High Quality Products. Replacement of this system is straightforward because Chevrolet made it so simple to service. Secure and tighten all lug nuts. Remember that the threaded end of the link kit must point up. If your backlash is too large or too small you can shift the shims from one side to the other. (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) 60 This should be part of your routine maintenance check under the car. Step 20 20: BALANCING THE CONTROL VALVE: The control valve must be adjusted after being dissembled as outlined in the following procedure: Balancing Instructions Each bolt has a wedge near the head (arrow) that prevents it from moving once the suspension has been mounted. Profile. This is how the steering knuckle looks when it is properly secured to the upper and lower control arms. Both are now ready to be installed into the frame. Tolerances of .005 or less are the runout target. The rotor is now ready to be installed. We're installing a new idler arm from Lonestar Caliper. They will be tightened and torqued when the completed car is sitting on its wheels and ready to drive around the block. Repeat this process on the other side. The kits include all of the necessary parts. 80, Mount Bolts Use a large piece of pipe or something that is the same diameter as the seal. 30, Torque Arm The spring should look like this when installed in its correct position. The pitman arm bends away from the box as it goes down to the center link end. the past. Raise the differential and cross frame with the floor jack until you can secure it to the frame with two 5/8-inch bolts. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Reliable sources to validate information regarding serial and casting numbers will get scarcer as time passes. Backlash occurs when you take your foot off the throttle; you hear a clunking noise coming from the rear of the car. Our inventory selection includes new pitman arms and slotted hex nuts, along with pitman arm to steering box nuts with washers to fulfill your Corvette restoration needs. When you disassembled the frame, you paid particular attention to how many shims were installed before removing them. Torque to 25 lb. 2, Wheel Nuts lower the weight of the car on it, roll the car, go back and torque the spring & arm bolts with the suspension loaded to the specified AIM torque rating. The bolts that you bagged and tagged when you removed this unit should be the correct size. After you have installed the first bushing, install the cross shaft into the arm. The completed differential now needs to be attached to the frame crossmember. Front Mounting Bolt 65, Ball Joint Attachment Nut The recirculating ball unit is attached to an arm connected to a relay rod. $61.99 Each. Two U-shaped brackets that fit over two rubber bushings secure the antiroll bar to the frame. 10: To remove the upper control arm, start by placing a jack securely under the lower control arm as support. Before attempting to [Click here to read more], Choosing big-block cylinder heads depends entirely on the application. Two 3/8-24 x 7/8-inch bolts secure the steel shafts that are included on the refurbished upper control arms. This pitman arm isused on all 1958-1964 power steering set-ups and the 1958-1962standard steering set-ups. Tighten the nuts evenly on both sides and make sure the lock washers are crushed. If you marked these parts during disassembly, re-torque the bolts to the same location. (The front trailing arm bushings have already been installed here.). Torque the side caps to 60 ft-lbs. In addition, Zip stands behind all of our Corvette parts with our "No-Hassle Guarantee" - That\'s customer service the Zip way! 80 in/lbs, Jounce Bumper to Frame 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. This marks the gears with the dye and shows your gear pattern. 80 It's Worn C2/C3 Corvette Power Steering Replacement The old shaft protruded about 1/8" past the nut and the new one sticks out just a little past flush. 65, Wheel Nuts 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. Now mount the stabilizer bar and brackets to the frame. A large rubber bumper is attached to the lower control arm. Removing Pitman arm from steering box 1,948 views Apr 5, 2018 Like Dislike Share Save Fun with cars - mostly Corvettes 640 subscribers Frame off refresh of a 1974 Corvette. 50 70 A new ball joint is installed and the steel shaft receives new rubber or poly bushings. Count on Zip Corvette for the best quality Corvette Parts available for your 1968-1982 Corvette. Now install the new pump, new hoses, and then tighten the belt to specs. 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. Four 9/16-inch bolts fasten the half-shaft to the trailing arm bearing. The clutch discs and their preload springs upgrade an 'open . You can now use the ball joint separator to separate the spindle from the lower control arm. Yellow or white dye (or marking compound) is usually found in a differential kit. For autocross or track day events, set the shocks on the firmest setting as this provides the best handling. 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. 90 The control arm has a dimple stamped into it and the end of the bottom coil must rest next to this dimple. Mounting Bolts 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. Remember to do both the upper and lower control arm bushings. 25 This process is the best for identifying any cracks. Sometimes this sounds a lot easier than it actually is. 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. What the the torque specs of: Pitman/box nut (I read 184 ft/lbs?) Remove the wood when this is complete. After the shims have been installed, attach a dial indicator to the differential housing to check the gear backlash. 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. i just put agr box on and threads are just even with pitman and its tight. The Fora platform includes forum software by XenForo. Written by Walt Thurn and Posted with Permission of CarTechBooks. Then balance the valve. The parts are then sent to the powdercoating shop to have their surfaces covered and protected. Axle You can also kick it with your shoe to push it into its deep well. Any accident damage or rust that has eaten through the frame has been cut out. 150 in/lbs Increase engine speed to approximately 1500 rpm. Caliper Also check the oil for any metal fragments, which tell you a gear tooth might be chipped or broken. This simple but effective design is very robust and gives long, trouble-free service when maintained properly. Once they are snug, go one quarter of a turn more with your wrench. One bolt holds these arms in place. Carefully continue to tap the seal in place while moving the shim around to ensure that the gap is the same all around. Outlet Do not stand in front of the spring. The steering box contains worm gears that turn the Pitman arm, which is attached to the bottom of the unit. Install the lower washer and rubber bushing onto the shock shaft. Clip off any excess wire with a pair of cutting pliers. Add or remove shims to adjust the toe-in or toe-out of the rear suspension. Subtle changes were made to the rear frame to accommodate this new differential. We now have a rolling chassis ready . Be sure the cotter key hole lines up. Each part is cleaned, inspected for cracks, aligned, and powdercoated. Turn the wheels (off ground) right and left, lightly contacting the wheel stops. 120 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. Housing 80, (Finger tight and align cotter pin hole.) They perform an important function. Attach a nut to the bottom of the bolt using a 7/8-inch socket on the nut and a 13/16- inch wrench on the bolt head and torque it to 100 ft-lbs. Everything was of excellent quality and fit just as it should. 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. If using a differential rebuilding kit, it includes a dye to help determine the gear mesh pattern. The final piece is a shim that determines the side yoke measurement. Crankcase Screw it on and line up the slot in the valve with the groove in the threads. 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. When the ball joint is aligned, continue to raise the jack while pushing the ball joint stud through. 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. Both of the old bushings should now be out of the control arm. For the best experience on our site, be sure to turn on Javascript in your browser. Tighten the 11/16-inch locking nuts to 50 ft-lbs. Lay out the critical components of your front suspension assembly as shown. Zip Corvette sales and customer service representatives are here to serve you during the following hours: Our showroom is open to the public Monday-Friday from 8:30am-5:30pm (EST). Power Torque Transmission Mount - A2327. The bolts screw into this retainer and you must take extra care not to strip the threads when you secure the steel shaft to the frame. Verify that each bolt has been properly installed and torqued to specifications by marking them with White-Out. The shock absorber is inserted from the bottom of the lower control arm and secured with two bolts in the front suspension. 33: Mount the idler arm to the other end of the drag link. Insert the trailing arm bolt through the trailing arm. in/lbs, Link Bushing Bolts Get the best deals on Pitman & Idler Arms for Chevrolet Corvette when you shop the largest online selection at eBay.com. It is best to sit the differential onto a jack and then install the frame member. ft. and install cotter pin. 15, Lower Ball Joint Nut Caliper The seals tend to leak if they sit or have high mileage. Spark Classic C2 and C3 Vettes have a conventional Saginaw worm-and-sector steering gear, which does the job quite well unless you'd prefer less steering effort. The Posi-Traction unit has small clutches that are stacked on each side of the springs; they are held in place with these springs. When they have separated, remove the ball joint nut and pull the control arm out of the spindle. Housing Bolts (front) However, if this is not in your budget, at a minimum you need to replace the ball joints and the rubber bushings. They provided a better ride and reduced the unsprung weight of the rear suspension.

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