KC-2273

4/28/23, 3:21 PM
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Mack - Pre-Delivery Inspection (PDI) Torque Values
This solution provides the torque specs needed to complete a Pre- Delivery Inspection (PDI).
NOTE: When verifying the component torque DO NOT loosen and retorque. Refer to the torque
verification procedure below.
1. Using a torque measuring tool in the tightening direction, begin to slowly apply force to the tool
until the first movement in the fastener is noted.
2. The reading recorded is a good indication of the original torque applied to the joint.
3. Tighten until the torque value below is acheived.
Mack Conventional (AN,GR,PI)
Component
Torque
Axle Shaft Nuts
3-PC = 224 ± 7 Nm
Web Link
iLOK = 244 ± 24 Nm
; Live UI
https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD2?pyActivity=%40baseclass.pzProcessURLInWindow&pyPreActivity=Previ…
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Leaf M20 = 505 Nm
Leaf M22 = 600 Nm
Front Axle U- Bolt
Air = 350 ± 20 ft. lbs.
Airtek Technical
Procedure PDF
(Hendrickson Website)
Maxlite M20 = 500 Nm
Maxlite M22 = 575 Nm
Single Axle Leaf = 500
Nm
Drive Axle UBolts
Single Leaf Mack Axle =
575 Nm
Primaax Technical
Primaax = 375 ± 25 ft. lbs
Procedure PDF
(Hendrickson website)
HAS 7/8" = 425 ± ft. lbs.
HAS 3/4" = 290 ± 30 ft.
lbs.
Wheel Nuts
HAS Technical
Procedure PDF
(Hendrickson website)
475 ± 25 ft. lbs.
Mack Cab Over (LR,TE)
Component
Axle Shaft Nuts
Front Axle U- Bolts
Drive Axle U- Bolts
Wheel Nuts
Torque
3-PC = 224 ± 7 Nm
iLOK = 244 ± 24 Nm
3/4" = 447 ± 13 Nm
7/8" = 576 ± 34 Nm
Single Axle Leaf = 500 Nm
Single Leaf Mack Axle 575 Nm
475 ± 25 ft. lbs
; Live UI
https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD2?pyActivity=%40baseclass.pzProcessURLInWindow&pyPreActivity=Previ…
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Mack Medium Duty (MD)
Component
Torque
Front Axle U-Bolts
525 + 25 Nm
Leaf = 460 + 25 Nm
Drive Axle U-Bolts
Wheel Nuts
Air = 575 + 50 Nm
475 + 25 ft. lbs
Axle Flange
; Live UI
https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD2?pyActivity=%40baseclass.pzProcessURLInWindow&pyPreActivity=Previ…
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Tags
u-bolt torque
wheel nut torque
mack
pdi
axle shaft nut torque
Categories
Make and Model > Mack > CXU/CHU/PI - Pinnacle
Make and Model > Mack > LR
Make and Model > Mack > MMD
Make and Model > Mack > LR Electric
Make and Model > Mack > MRU/TE - TerraPro
UI System > Suspension and Steering
Vehicle
; Live
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Make and Model > Mack > AN - Anthem
Make and Model > Mack > GU/GR - Granite
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