KHIA headerKnow-How in Action


Reseating Pin Bush With Belzona® On Caterpillar 980 Loader



Mining and Quarrying (MINQ)



Mechanical Power Transmission (MPT)


Customer Location:

Mine, Skopje, Macedonia


Application Date:

February 2017


Application Situation:

At a separation mine, one of the large Caterpillar 980 Wheel Loaders was suffering pin housing damage due to lack of lubrication.



Lack of lubrication had caused abrasion in the bush housing, which led to a diameter increase of 30 mm from the original dimension. This meant a loose fitting bucket pin and unstable use of the equipment.



Belzona 1111 (Super Metal)





Application Method:

Application was carried out in accordance with Belzona Know-How System leaflet MPT-8. The surface was prepared by grinding and a new bush was bonded into place using Belzona 1111. Other bushing was in a good condition. In order to ensure the bushes were in correct alignment a dummy shaft was used to locate the bushing.


Belzona Facts:

The application was completed in four hours and through the use of cold-curing materials, involved no heat. This method shortened the downtime of the machine and the repair was performed in situ without dismantling or machining of the frame.


Photographs Description

1. Damaged pin bush housing 2. New bushing installed with Belzona 1111 3. A dummy shaft was used to locate the bushing 4. View of Caterpillar 980 machine

Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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