Brake time

How long should it take per hub to replace the drum, brakes, wheel bearing and seals, and s-cam bushings?

 

Depends on what model axles if anythings rusted solid and the mechanics experience for a good mechanic and no problems roughly an hour a wheel I'd say roughly

 

Wheel seal and bearings - 1.5 hours. Drums and shoes, 0.5, s-scam bushings 1.0 hour. Total about 3 hours per wheel and that's pushing it. Like truckmechanic said it does depend on the type of wheel, dayton or budd wheels and how well everything comes apart. I am the type of guy to take my time and clean everything and make sure the wheel end has proper end-play by using a dial indicator and whatnot... I do not rush when doing brakes or wheel end work. You can get guys that are really quick and slam everything together, but is it done right? If a wheel comes off and kills someone, saving a couple hours on labor time won't matter in court!!!

 

Hub seal 1.0 hrs
Each wheel .1=.2 hrs
Shoes .3 hrs
Each bearing race .3=.6 hrs
s-cam bushings .6
Drum included
Total labor per wheel 2.8 hours
Additional .5 hrs per wheel on drive axle wheel position for the axle r&I
Total labor per wheel on drive axle position 3.3 hours

 

On what truck or a trailer? Lot of variables with either.

 

The only variable would be drive axle or non drive axle with the labor differing by 1/2 hour between the two.

 

Thanks for the quick replies. I have worked in a Cat shop for 25 years and have only done engine work. Since Cat has stopped making truck engines in the U.S., we have started branching out into other areas. We have a few guys in the shop that have done the chassis work before but management has no clue on the amount of time involved and I was curious about it. Of course not having the correct parts in stock kills the time also, along with inexperienced parts people.

 

I agree with all the above...it takes alot of time to clean when the wheel seal has been leaking for a while and everything has a good coat of cooked grease. They should also take the time to inspect and see why the seal failed. Just like Heavyd said...just because they are quick doesn't make it good. Keep it clean...its a dirty job...surrounding area will be awful...but the job should be clean. Also takes time like you said for parts...but finding the right size and type seal and hub nut tools. Put them all in one place...nothing like having all the right parts and not being able to get the nut off the hub because you can't find the right size socket because it got moved.

 

In the case that the hub seal has failed and slobbered oil over all the components, we charge an additional .3 hrs for cleaning them up. It can take more time than that, but we cap it at that time so as to not soak the customer and get the work done as efficiently as possible. When you add all these times up, there can be a lot of labor time in a wheel end, but if you look at all involved and break it down, you will find it is justified.

 

hah) it is time to maintane brakes.... if you got disk brakes you can see all easily before you start, but with drum brakes....

You do not know how worn are drums? is it possible to reuse? how good ore bad seals, bearings, s-cams and all this stuff. Take all apart and you'll see