PI0888

Mack Trucks
Greensboro, NC USA
Service Program
Trucks
Date
Group
No.
Release
Page
7.2019
657
002
01
1(5)
Link Auxiliary Axle Hardware, Retorque
CXU, AN
PI0888, Link Auxiliary Axle Hardware, Retorque
(July 2019)
For certain MACK CXU and AN trucks built between 08/29/2016 and 01/25/2019, a new improved torque
procedure has been introduced to maintain and distribute torque properly on the hardware attaching the
Link auxiliary axle to the frame mounted brackets. Follow the repair instructions outlined in this document
for re-torquing the indicated nuts or bolts.
PV729-89422985
USA146675925
Mack Trucks
Service Program
Date
7.2019
Group
No.
Release
657
002
01
Link Auxiliary Axle Hardware, Retorque
Procedure:
You must read and understand the precautions and guidelines in Service Information,
group 70, "General Safety Practices, Frame, Springs, Shocks and Springs" before
performing this procedure. If you are not properly trained and certified in this procedure,
ask your supervisor for training before you perform it.
DANGER
Do not attempt to repair or service this vehicle without having sufficient training, the
correct service literature and the proper tools. Failure to follow this could make the vehicle
unsafe and lead to serious personal injury or death.
1 Park the vehicle on a level surface.
2 Apply the parking brake.
3 Place the transmission in neutral or park.
4 Install the wheel chocks.
Page
2(5)
Mack Trucks
Service Program
Date
7.2019
5 Disconnect the cable from the battery’s negative terminal.
6.
Torque tighten the screws and nuts.
Tightening torque
Fasteners
Tightening sequence: 1-6
305+−31 44 Nm
(225+−2150 lbf⋅ft)
7. Torque tighten the screws and nuts.
Tightening torque
Fasteners
Tightening sequence: 1-6
305+−31 44 Nm
(225+−2150 lbf⋅ft)
Group
No.
Release
657
002
01
Page
3(5)
Mack Trucks
Service Program
9 Connect the cable to the battery’s negative terminal.
10 Remove the wheel chocks.
Date
7.2019
Group
No.
Release
657
002
01
Page
4(5)
Mack Trucks
Service Program
Date
7.2019
Group
No.
Release
657
002
01
Reimbursement
This repair is covered by an authorized Service Program.
Reimbursement is obtained via the normal claim handling
process.
UCHP
Reimbursement
Recall Status
Vehicle inspected, repair not required
1- Inspected OK
Vehicle repaired per instruction
2- Modified per
instruction
Labor Code
Primary Labor Code – Link Auxiliary Axle Hardware, Retorque
6579-16-09-02
0.4 hrs
Causal Part
990954
SCC Code
S7397
Authorization Number
N/A
Expiration Date
31-JULY-2020
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