BI620094
Bucyrus Australia
Blakefield South FBL-55H Service Manual
CHECKING WEAR OF THE POSI-STOP BRAKE ASSEMBLIES Care and Maintenance The wear indicator on the brakes should be inspected every 50 service hours. Each Posi-Stop brake housing assembly is fitted with its own brake wear indicator. The lining wear indicator is located on the inside of the brake housing beneath where the axle centre is attached on to the brake housing.
Checking Brake Wear 1)
The machine must be parked on a level surface with lift arms lowered to the ground or all attachments removed. 2) Isolate and tag as described in Section 1. 3) Using minimal force and a suitable drift and hammer, the indicator should be tapped in until it comes to a stop, the amount of indicator that remains protruding is the amount of brake wear that is still present in the brake pack. As the discs wear the indicator pin will be able to be pushed further into the mounting nut and when it is flush with the mounting nut face the discs should be replaced. The wear indicator pin can seize in the mounting nut when the brakes are operated in dusty environments and therefore the pin will not show the true condition of the discs. Remove the indicator and free up the pin. Brake performance should be monitored with testing equipment. If the performance is deteriorating and the pin is protruding the wear indicator pin will need to be repaired or replaced.
Brake Wear Indicator
October 2009
175 of 311
Manual No. M01335r1
