Ingalls 38900-38920 - Manual

Ingalls
Product Installation Instructions ING3890-041602
Part Number 3890/3892
CAUTION: Observe proper safety and repair procedures for installation of all chassis parts. Some chassis parts require specialized tools and
experience and therefore MUST be installed by a qualified technician otherwise an unsafe vehicle and/or personal injury could result. Wear safety
glasses and other protection.
WARNING: Before beginning, check for any damaged or loose suspension connections. Loose connections here indicate worn or broken parts which
MUST BE REPLACED. Failure to replace a damaged or worn spindle and/or link may cause the wheel to separate from the vehicle, possibly resulting in
serious personal injury.
NOTE: These parts are intended for use in vehicles with abnormal alignment and are designed to replace the non-adjustable factory equipment. These
parts are not designed for installation on vehicles with suspension and/or steering systems modified for racing, competition or any other non-standard
purpose.
Note for 3890: To minimize possible noise characteristics of polyurethane bushings, always lube with anti-seize, silicone, or naval grease before
installation.
Before starting alignment, complete inspection checklist and determine the amount of change needed.
1. Match left and right hand threaded parts and assemble the SmartArm TM . Thread the Jam Nuts all the way down on
the End Links [left hand Jam Nut (silver) on the left hand threaded End Link (first thread missing), right hand Jam Nut
(black) on the right hand threaded End Link (complete threads)].
Thread each End Link all the way into the Center
Tube (put the left hand Link into the end of the Center Tube which has the radial groove next to the wrench flats).
2. Raise the rear of vehicle and support body safely on jack stands. Remove rear tire and wheel assembly.
3. Remove the two bolts from the inner end of the upper support arm at the body mounting bracket.
4. Remove the bolt from the spindle at the upper support arm and remove the upper support arm.
5. Install the new SmartArm
TM onto the body using the two original mounting bolts and torque to 28 ft. lbs. [38 N.M.].
6. For the 3892 only, place the small steel sleeve inside the large steel tube in the rubber bushing.
7. Attach the bushing end of the
SmartArm
TM
to the spindle.
8. For the 3892 only, safely raise the spindle close to its normal ride position in the wheel well to properly set the rubber bushing (do
not raise the body off the jack stands for safety).
9. Tighten the arm to spindle bolt to 40 ft. lbs. [54 N.M.] (return the spindle to its previous position if using the 3892).
10. Replace the tire and wheel assembly.
11. Adjust camber by loosening jam nuts and turning the Center Tube to the desired specifications. DO NOT extend the threads
beyond their limits (ensure that the dimple marks on the End Link threads are still located within the Center Tube).
12. Tighten the jam nuts to 80 ft. lbs. [108 N.M.], set rear toe to factory specifications and road test vehicle.
ALWAYS CHECK FOR SUSPENSION CLEARANCE
Modifying any suspension component may change other part
clearances and cause binding or interferences. After installing any
Ingalls’ product, the suspension must be checked for binds or
interference between all components, other arms and the chassis. Be
sure that all control arms, struts and steering ends move freely through
the full movement of the suspension (springs may need to be removed
to fully check component travel). Installing any Ingalls’ product on a
modified vehicle (lowered or raised) from the original factory design
requires a detailed check of all suspension components and their
movements. Ingalls recommends that a trained technician install all
products.
Limited Warranty
Subject to Disclaimer. All Ingalls products are warranted against
defects in materials and workmanship for ninety (90) days from date of
purchase. During the warranty period, Ingalls will repair, or at its option
replace at no charge, components that prove to be defective. The
product must be returned, shipping prepaid, to Ingalls facility. This
limited warranty does not apply if the product is damaged by accident or
misuse. The foregoing warranty is in lieu of all other warranties
expressed or implied including but not limited to any implied warranty of
merchantability, fitness, or adequacy for any particular purpose or use.
Ingalls shall not be liable for any special, incidental or consequential
damages whether in contract, tort, or otherwise resulting from the use or
the inability to use the product.
Warranty Disclaimer
Use of this product in competition, or use on vehicles altered from original manufacturer’s specifications or settings, EXPRESSLY VOIDS WARRANTY.
The user is urged to inspect for suspension binding or interference when the product is used in these manners. However, due to the varying conditions
and manner of use which the product will be subjected to in such uses, Ingalls Engineering Co., Inc. makes no warranties, either express or implied,
including any warranty of merchantability or fitness for a particular purpose for use in competition or with specifications or settings other than those
specified by the original manufacturer’s specifications.
Copyright © 2002 Ingalls Engineering Co., Inc.