During our annual Maintenance Day in February, while checking the oil level in the rear differential of Truck 57, several pieces of metal were found. Upon further with a bore scope, several teeth on the ring gear were found to be broken. A new rear was ordered and last Tuesday, several members took of work or altered their schedule to put a new rear in. After several hours of work, it was found that the rear we were sent was incorrect. Chief Engineer Weicksel, working with a local dealer, had the old (and new) items shipped back to the factory where it was rebuilt and shipped quickly back to us. Today (Thursday), several members put the new differential in and got the Truck back in service after being out 9 days.
QFD members had 50 man-hours in this project, all volunteer. Figuring an average labor fee of $80.00 per hour, this in-house work saved us $4,000.00.
A big thanks goes to Carl and all the members who worked on tackling this rather large project. Had this not been found during routine maintenance, it could have failed enroute to a call or done further damage to the driveline. This is why we do what we do.