990K Wheel Loader and 844K Wheel Dozer Machine Systems Caterpillar


Boom Bearings and Seals - Remove and Install

Usage:

990K A9P

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
3S-6224  Electric Hydraulic Pump Gp 
165-3790 Puller Stud 
9U-6832 Nut 
5H-9817 Hydraulic Cylinder Gp 
9U-6751 Sleeve 
5P-8707 Bearing Puller Adapter 
9U-6261 Bearing Puller Adapter 
3S-6224  Electric Hydraulic Pump Gp 
165-3790 Puller Stud 
9U-6832 Nut 
5H-9817 Hydraulic Cylinder Gp 
9U-6751 Sleeve 
9U-6261 Bearing Puller Adapter 
Loctite 263 


    Illustration 1g06020226

  1. Remove lip seals (1) from both sides of the boom.


    Illustration 2g06020227

  2. Use Tooling (A) to remove bearings (2) from both sides of the boom.


    Illustration 3g06020228

  3. Remove lip seals (3) from both sides of the boom.


    Illustration 4g06020229

  4. Use Tooling (B) to remove bearings (4) from both sides of the boom.

Installation Procedure

  1. Install the lip seals and bearing in the reverse order of removal.

  2. Check and replace lip seals (1) and (3) if necessary. Apply Tooling (G) to bore prior to install lip seals (1) and (3).

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