The Axle Hub Shaft Seal is Leaking on The Steering Axle of Certain Machines {3256, 3258, 3260, 4251} Caterpillar

The Axle Hub Shaft Seal is Leaking on The Steering Axle of Certain Machines {3256, 3258, 3260, 4251} [M0066580]

POWER TRAIN

AXLE GP

The Axle Hub Shaft Seal is Leaking on The Steering Axle of Certain Machines {3256, 3258, 3260, 4251}

1.1. Introduction

2.1. Problem

3.1. Solution

Backhoe Loader
434E (S/N: SXB1-UP; SEF1-UP; FSH1-UP; SJL1-UP)
434F (S/N: LDH1-UP; MTR1-UP; FLY1-UP)
434F2 (S/N: LYK1-UP; HWR1-UP)
442E (S/N: EME1-UP; PCR1-UP; GKZ1-UP)
444E (S/N: NBA1-UP; HXB1-UP; LBE1-UP)
444F (S/N: LJJ1-UP; FBN1-UP; JXR1-UP)
444F2 (S/N: LYL1-UP; HWS1-UP)
Compact Wheel Loader
904H (S/N: H4T1-UP)
906H (S/N: TPE1-UP; SDH1-UP)
906H2 (S/N: JRF1-UP)
906K (S/N: L661-UP)
906M (S/N: H661-UP)
907H (S/N: MJF1-UP; SJM1-UP)
907H2 (S/N: JRS1-UP)
907M (S/N: H771-UP; Z771-UP)
908H (S/N: LMD1-UP; MXF1-UP; L5T1-UP)
908H2 (S/N: JRD1-UP)
908K (S/N: L881-UP)
908M (S/N: H881-UP)
Telehandler
TH460B (S/N: SLF1-UP)
TH560B (S/N: SLG1-UP)
TH580B (S/N: SLH1-UP)
Wheel Loader
906M (S/N: Z661-UP)
908M (S/N: Z881-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

Oil is leaking from the input shaft and into the steering hub and final drive on the front axle of 434 and 444 Backhoe Loaders. The same components are also used on certain Telehandler axles and Compact Wheel Loader axles.

Solution

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Illustration 1	g01190192
View of housing group (1) 199-0648 Jam Nut (2) 198-7819 Bushing (3) 199-0705 Bolt (4) 199-0707 Seal (5) 199-0779 Bushing (6) 226-4372 Housing

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Table 1
Required Parts
Item	Qty	Part Number	Part Description
1	1	199-0707	Seal

Replace with the same part. Take pictures of the failed part and attach to the SIMSi, or send the pictures to the product group. Try not to destroy the seal when removing, so that the seal can be further inspected.