PI-0812
Service Bulletin Details
Public Details for: PI-0812
Mack trucks: rear suspension adjustment washers. Replacement of the suspension adjustment washers is required. *js
- 2013 - 2012 - 2011 - 2010 - 2009 - 2008 - 2007 - 2006 -
Models from 2012
| 2012 MACK GRANITE (GU) |
| 2012 MACK PINNACLE (CHU) |
| 2012 MACK PINNACLE (CXU) |
| 2012 MACK TD |
Models from 2010
| 2010 MACK CHU |
| 2010 MACK CXU |
| 2010 MACK GU |
Models from 2009
| 2009 MACK CHU |
| 2009 MACK CXU |
| 2009 MACK GU |
Models from 2008
| 2008 MACK CHU |
| 2008 MACK CXU |
| 2008 MACK GU |
Models from 2007
| 2007 MACK CHU |
| 2007 MACK CXU |
| 2007 MACK GU |
Models from 2006
| 2006 MACK CHU |
| 2006 MACK CXU |
| 2006 MACK GU |
Service Program Trucks Mack Trucks, Inc. Greensboro, NC USA SB-10051570-7636 Date Group No. Release Page 2.2013 652 006 1 1(4) Rear Suspension Adjustment Washers CHU, CXU, GU, TD PI0812, Rear Suspension Adjustment Washers (February 2013) Replacement Procedure You must read and understand the precautions and guidelines in Service Information, Group 6, “General Safety Practices, Wheel Suspension and Steering" before performing this procedure. If you are not properly trained and certified in this procedure, ask your supervisor for training before you perform it. It has been determined that certain vehicles built with Maxlite suspensions and MGM LTR-L3 brake chambers interference can occur during suspension articulation between the brake chamber and the suspension adjustment washer. Replacement of the suspension adjustment washers is required. W6079024 1 Area of contact PV729-PI0812 USA56831 Mack Trucks, Inc. Service Program Date 2.2013 Group No. Release 652 006 1 Procedure 1 Chock the front tires and release the parking brake 2 Using a floor jack or hoist, lift the weight off of the spring and support with jack-stands underneath the frame. Note: Place just ahead of the radius leaf spring/hanger requiring the eccentric washers on drivers side. 3 Remove the center bolt and replace the old washers with a pair of the new eccentric washers (21011478). W6078694 4 Install the center bolt back into the radius leaf and hanger. Make certain the washers are installed correctly (see illustration). Loosely tighten center bolt at this time. Note: Whenever the U-bolts are loosened and/or the suspension components attached to the axle are being worked on, make sure that the locating features on each component is properly engaged so that the components are positioned together properly. 5 Lower the weight of the frame down onto the spring assembly. Note: Remove jack stand and jack. 6 Perform the above procedure on the other radius leaf spring assembly. Page 2(4) Mack Trucks, Inc. Service Program Date 2.2013 Group No. Release 652 006 1 W7001358 7 Check and adjust tandem alignment as needed. Note: Preliminary alignment only. Note: It is recommended to have the vehicle machine aligned if available. 8 Torque both drivers side center bolts for the radius leaf springs to 678 – 712 Nm (500-525 lb-ft) 9 Set parking brake and remove chocks. Page 3(4) Mack Trucks, Inc. Service Program Date 2.2013 Group No. Release 652 006 1 Reimbursement This repair is covered by an authorized Service Program. Reimbursement is obtained via the normal claim handling process. Claim Type (used only when uploading from the Dealer Bus. Sys.) B Recall Status Vehicle inspected, repair not required 1- Inspected OK Vehicle repaired per instruction 2- Modified per instruction Labor Code Primary Labor Code 1352J-01-96 0.5 hrs Time to take charge and determine campaign status 101AA–0A–00 — 0.3 hrs. Causal Part 20551933 Parts Disposition Authorization Number PI0812 Expiration Date 30 JUNE 2013 Page 4(4)