201AA 78-88 GM A/G-BODY Double Adjustable Trailing Arms Thank you for your purchase from our new line of GM parts. Please call us at (877) 4NO-ROLL if you have any questions regarding the service or installation of your Hotchkis products. Visit us online @ www.hotchkis.net W arning: This installation should be perform ed by a trained professional. INSTALLATION INSTRUCTIONS 1. First, raise the rear of the vehicle so that the rear wheels are off the ground.
SETTING PINION ANGLE It may be necessary to set pinion angle after installation of your new Hotchkis upper trailing arms. First of all, what is pinion angle? Pinion angle is basically the angle between the centerline of the differential pinion and the drive shaft centerline. This angle changes during acceleration and braking. If the pinion angle is excessive, then vibration and increased U-joint wear will occur. The Hotchkis double adjustable trailing arms allow you to adjust the pinion angle with ease.
The simplest rule of thumb is: The centerline of the differential pinion should be parallel to the centerline of the engine’s crankshaft without being the same line. FYI… The centerlines should not be the same line because the U-joints would wear in the same areas all the time. Having an angle at the joint itself allows the joint to articulate and wear evenly along the entire bearing race. So, the first thing to do is to find out the angle the engine’s crankshaft is sitting at.
If there is vibration during braking, then the pinion angle is set too low! Fine tune your Hotchkis trailing arms to achieve the perfect setting for your driving style and horsepower.
Hotchkis Performance LLC Return Policy & Limited Warranty Effective December 1, 2010 all Hotchkis products must be registered to qualify for warranty at www.hotchkis.net or via the mail-in warranty card, included with the product, within 30 days of the original purchase date. IMPORTANT: This warranty supersedes all other warranties included with this product. Return Policy We want you to be completely satisfied with your Hotchkis Performance product.
FULLEST EXTENT PERMITTED BY LAW. THIS WARRANTY DOES NOT COVER CONSEQUENTIAL DAMAGES, LOSS OF TIME OR REVENUES, INCONVENIENCE, LOSS OF USE OF THE VEHICLE, DAMAGE TO THE VEHICLE OR COMPONENTS OF THE VEHICLE, ANY OTHER TYPE OF CONSEQUENTIAL DAMAGES, OR OTHER INCIDENTAL OR INDIRECT DAMAGES. HOTCHKIS’ MAXIMUM LIABILITY UNDER THIS WARRANTY SHALL IN NO EVENT EXCEED THE PURCHASE PRICE OF THE PRODUCT.
INSTALLATION INSTRUCTIONS 1301 / 1302 / 1305 / 1306 THANK YOU FOR CHOOSING HOTCHKIS PERFORMANCE PRODUCTS Removal of Stock Lower Trailing Arms 1) Place car on level surface. 2) Support rear of the car on jack stands and remove the rear wheels. 3) Remove the rear sway bar. (if car is equipped-not required on Camaro/Firebird) 4) Place a floor jack under the differential and lift up slightly to remove tension from the trailing arm bolts-make sure not to lift the car off the jack stands.
9) Place one drop of blue Loctite on clean threads and torque sway bar nuts to 35 ft./lbs. Note: Loctite not needed if using new Hotchkis Performance hardware. 10) The holes located on the Hotchkis Performance lower control arms are for the mounting of our sway bar.
Hotchkis Performance LLC Return Policy & Limited Warranty Effective December 1, 2010 all Hotchkis products must be registered to qualify for warranty at www.hotchkis.net or via the mail-in warranty card, included with the product, within 30 days of the original purchase date. IMPORTANT: This warranty supersedes all other warranties included with this product. Return Policy We want you to be completely satisfied with your Hotchkis Performance product.
This limited warranty is the entire and only warranty for the products and may not be modified or supplemented by any other person or company in any form. Any description of the products, by anyone, is for the sole purpose of identifying them and is not part of the basis of the bargain, and does not constitute a warranty that the products will conform to that description. The statements of any salesperson do not constitute part of this limited warranty and cannot be relied upon as a warranty.
HOTCHKIS PERFORMANCE, LLC C/O CUSTOMER SERVICE 8633 Sorensen Avenue SANTA FE SPRINGS, CA 90670 Hotchkis Performance will not accept product returns without the RGA number, receipt and the information described above. C.O.D. or collect shipments will be refused. Once the returns are received at Hotchkis Performance, we will evaluate the products, verify the sales receipt, and investigate the warranty claim. Any repaired or replaced product will be returned to the sender. Effective December 1, 2010.
+ 1401 / 1402 / 1403 ADJUSTABLE TRAILING ARM MOUNT BRACES 1401 – 78-88 GM A/G-BODY / 1402 – 68-72 GM A-BODY / 1403 – 64-67 GM A-BODY Thank you for your purchase. Please call us at (562) 907-7757 if you have any questions regarding your Hotchkis Performance products. Visit us online @ www.hotchkis.net INSTALLATION OF HOTCHKIS PERFORMANCE ADJUSTABLE TRAILING ARM MOUNT BRACES ALWAYS USE CAUTION! - AND MAKE SURE THE CAR IS SECURE ON JACK STANDS. 1) Place the vehicle on a level surface. Block the front tires.
5) Using the jack placed under the differential, raise the rear suspension to its approximate ride height. The braces are generally easier to install with the rear axle at its normal ride height position to the frame. NOTE: Be careful not to unload the weight of car off the jack stands. To keep the axle from rotating, install one brace at a time. Do not have trailing arm bolts removed from opposite sides at the same time.
8) The brace can now be installed by sliding it over the bolts. The braces connect the upper and lower trailing arm frame mounts as indicated by the arrows in the photo from step 7. The longer section of the brace fits next to the lower trailing arm. NOTE: For 78-88 models (part #1401) the curved section fits next to the lower trailing arm between the rear seat pan and the frame cross-member as shown in the photos below.
9) Adjust the length of the brace as necessary. Loosen the jamb nut on the brace with 15/16” wrench to allow the head to move. Rotate the head clockwise to shorten the brace or counterclockwise to lengthen the brace until it fits over the ends of the bolts. The brace ends should fit almost flush to the frame with the bolts fully extended through the ends.
11) Once the braces are installed, place one drop of Loctite on the trailing arm bolt threads. Tighten the washers and nuts. Torque the nuts to 60 ft./lbs. You may have to use a wrench and socket together to keep the hardware from spinning. NOTE: If using rubber trailing arm bushings, then raise the differential to approximate ride height and tighten the trailing arm bolts. Polyurethane equipped trailing arms can be tightened at full suspension droop.
Hotchkis Performance LLC Return Policy & Limited Warranty Effective December 1, 2010 all Hotchkis products must be registered to qualify for warranty at www.hotchkis.net or via the mail-in warranty card, included with the product, within 30 days of the original purchase date. IMPORTANT: This warranty supersedes all other warranties included with this product. Return Policy We want you to be completely satisfied with your Hotchkis Performance product.
This limited warranty is the entire and only warranty for the products and may not be modified or supplemented by any other person or company in any form. Any description of the products, by anyone, is for the sole purpose of identifying them and is not part of the basis of the bargain, and does not constitute a warranty that the products will conform to that description. The statements of any salesperson do not constitute part of this limited warranty and cannot be relied upon as a warranty.
Hotchkis Performance will not accept product returns without the RGA number, receipt and the information described above. C.O.D. or collect shipments will be refused. Once the returns are received at Hotchkis Performance, we will evaluate the products, verify the sales receipt, and investigate the warranty claim. Any repaired or replaced product will be returned to the sender. Effective December 1, 2010. This return policy and limited warranty supersedes all previous policy and warranty statements.
