To be used to connect the components of SANDVIK rock driller. The special screws for most rock drillers, which are made of 30CRmoV through forging process. The strength could reach that of the original vehicle
Installation instructions (from Sandvik Maintenance Manual)
Checking and tightening bolts and tie rods
The most important maintenance task is to check the tightness of the bolts, particularly the tie rods and mounting bolts. Loose tie rods cause rapid wear of the body section faces, shortening the service life of the rock drill.
Following procedure is recommended for checking the bolt tightness during normal maintenance:
1. Check the tightness of each bolt by using 10 % higher torque than specified and the correct tightening order.
2. The joint being tested is loose if the wrench turns. In this case loosen all the bolts being tested and retighten with the correct order.
3. If the threads are not clean the bolts cannot be tightened correctly. In such cases the bolt must be removed, the threads checked, cleaned, and lubricated with grease.
Note! Use only an inspected, high-quality torque wrench.
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