Incorrect Torque Specifications in the Operation and Maintenance Manual, "Wheel Nut Torque - Check" for F-Series Backhoe Loaders{4057, 4201, 4202, 4208, 4209} Caterpillar


Incorrect Torque Specifications in the Operation and Maintenance Manual, "Wheel Nut Torque - Check" for F-Series Backhoe Loaders{4057, 4201, 4202, 4208, 4209}

Usage:

420F JWJ
Backhoe Loader:
416F (S/N: KSF1-UP; LWT1-UP)
420F (S/N: LTG1-UP; LKH1-UP; JWJ1-UP; SKR1-UP)
422F (S/N: LRH1-UP)
428F (S/N: LBH1-UP; RAK1-UP)
430F (S/N: RDF1-UP; LNH1-UP; RGS1-UP; LDY269-UP)
432F (S/N: LNR1-UP; PXR1-UP)
434F (S/N: LDH878-UP; MTR1-UP)
444F (S/N: LJJ1-UP; JXR322-UP)

Introduction

The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.

Problem

Incorrect torque specifications are listed in the Operation and Maintenance Manual, "Wheel Nut Torque - Check" for F-Series Backhoe Loaders.

Solution

Table 1
"Wheel Nut Torque - Check"    
Front wheels     255 N·m (188 lb ft)    
Rear wheels    
400 N·m (295 lb ft)    

Use the torque specifications that are listed in Table 1 when tightening the wheel nuts on F-Series Backhoe Loaders.

Note: When mounting or remounting any wheel, use a star pattern when tightening the wheel nuts to the correct torque specifications.

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