Usage:
Problem:
There has been a small amount of reported failures of the striker bars on the 836 Landfill Compactor. The failures have occurred in both the front and rear bars. The failure modes have been either a fracturing of the weld between the bar and the bolt plate, or the bolts that attach the bar to the compactor.
Solution:
The striker bars are not intended to be immovable objects. If the operator traps a large object or a large collection of objects between the wheel and the striker bar, the bar will fail in order to protect the final drive on the axle. There are no guidelines as to the size or type of the objects that will cause striker bars to fail.
NOTE: Modifications to permanently attach the striker bar to the compactor will run the risk of causing final drive failures.
First, there has been a high degree of correlation between striker bar failures and after market (non-Caterpillar) wheels. An out of tolerance after market wheel or Caterpillar wheel with after market tips may contact the striker bar which can cause an early failure.
Second, the weld between the bar and the plate has shown a lack of fusion between the weld and the parent metal on some failures. The bar can be re-welded either before or after failure. The welding information is shown in illustrations 1 and 2.
Third, it is possible for tolerances to add up in such a way that the bolts will bottom out in the frame and therefore have insufficient bolt preload. The most expedient way to avoid bolt problems is to switch the bolts used on the front striker bar with the bolts used on the rear striker bar. Use a 7X-0406 Bolt (76.2 mm long) and a 8T-5361 Washer in the front, and a 7X-0405 Bolt (69.85 mm long) and a 8T-5361 Washer in the rear.
1018239 Striker Bar As.
Illustration 1.
1013499 Bar As.-Striker Shown
Illustration 2.
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