994K Wheel Loader Systems Caterpillar


Linkage Pin and Seal Group (Bucket Control)

Usage:

994K MM9


Illustration 1g06248589

Table 1
Item  Qty  Part  Specification Description 
389-4927 Collet  Before assembly, clean the outer diameter and inner diameter of the collet. Also, clean all the mating surfaces.
Before assembly, apply Loctite C5A Copper Anti-Seize to the outer diameter and inner diameter of the collet. 
420-1507 Pin Seal  Before seal installation, apply Loctite 263 to the bore.
Before seal installation, apply Loctite 270 to the bore.(1) 
389-4947 Collet  Before assembly, clean the outer diameter and inner diameter of the collet. Also, clean all the mating surfaces.
Before assembly, apply Loctite C5A Copper Anti-Seize to the outer diameter and inner diameter of the collet. 
3E-8012 Bolt  Before assembly, clean the outer diameter and inner diameter of the collet. Also, clean all the mating surfaces.
Before assembly, apply Loctite C5A Copper Anti-Seize to the bolt threads.
Use the following procedure to tighten the bolts:
1. Tighten bolt to 1800 ± 200 N·m (1328 ± 148 lb ft).
2. Tap the joint until the torque drops lower than 950 N·m (701 lb ft).
3. Again, tighten bolt to 1800 ± 200 N·m (1328 ± 148 lb ft).
4. Apply a second impact until the torque drops lower than 1600 N·m (1180 lb ft).
5. Finally, tighten bolt to 1800 ± 200 N·m (1328 ± 148 lb ft).
6. Again, tighten all bolts to 1800 ± 200 N·m (1328 ± 148 lb ft) after 50 hours of vehicle operation. 
(1) Europe only

Caterpillar Information System:

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