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Brakes on a Case 450D loader

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Mike in Va.

11-06-2001 15:07:22




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Hello out there, We have an early Case 450 crawler/loader. We use it around the farm some. Never has had brakes that worked. Never was a worry, really. Now though I want to work around a steep grade and I'm weary of using the teeth on the bucket to stop all the time. I've always chosen the most careful way around a steep place, but thats not best. Can anyone out there give me some tips on what to expect on a brake rebuild? We got a service manual for it. Got some down time this winter too. May even have a shed to slip
under. What am I up against? Thanks in advance. Mike

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Dan-o

11-15-2001 18:00:13




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 Re: brakes on a Case 450D loader in reply to Mike in Va., 11-06-2001 15:07:22  
Mike, When I got my 450 dozer, someone had replaced the two master cylinders with two single line delco master cylinders. The cylinders were from the 60's truck style. I had to replace one due to the seals leaking and a rebuilt one cost around 27 dollars. The cylinder bolted in with the same bolt pattern, but the out put line had to be reduced with an adaptor. I put new brake disk in the dozer and have not had any trouble since.

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marlowe

11-07-2001 14:42:22




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 Re: brakes on a Case 450D loader in reply to Mike in Va., 11-06-2001 15:07:22  
well seeing that the lines are cut there is a reasone for that on the early 450 the brake fulid would get hot and expand that would cause the clutch to disengage just like you were pushing the pedal so a lot of times they just cut the lines a lot cheaper than new clutch packs they would slip on side or the other sounds like a lot off bull but its a fact . the service manager at my case dealer saved me big bucks because i was going to tear mine down to replace the clutch pack on the right well that was about 7 years ago

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george

11-12-2001 22:29:06




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 Re: Re: brakes on a Case 450D loader in reply to marlowe, 11-07-2001 14:42:22  
bullfeathers, as long as no one put a check valve
in the master cyl , the fliud can return to reservoir like it should.

george



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marlowe

11-07-2001 05:23:54




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 Re: brakes on a Case 450D loader in reply to Mike in Va., 11-06-2001 15:07:22  
i fix mine once and they were real high had to put in new master cyl. it takes 2 one for each side and they don't last long because you don't use them that much so been running it with out for years if i remember had a hard time getting them mine were rusted past repair



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Mike in Virginia

11-07-2001 06:09:22




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 Re: Re: brakes on a Case 450D loader in reply to marlowe, 11-07-2001 05:23:54  
The spot I'm working next has alot of scrub oak and maple. I've rolled up on to that stuff to stop in the past. The 450 has a Caterpiller Skidder ROPS cage mounted on it. I'm not so worried about rolling over as I am about the wear and tear on the bucket and liftarms. Using the teeth to stop me on a down slope seems like its hard on the machine. Both master cylinders have the brake lines cut and folded over. I can only imagine what the wheel cylinders must look like. The guy who owned the tractor before us used it to build sea walls
in brackish water. Both final drives have been replaced but I have doubts that the brakes were ever much use to him. Maybe this brake business is a fight I'll walk away from. Lord knows there is plenty of other chores this winter...

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Max

11-09-2001 20:56:24




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 Re: Re: Re: brakes on a Case 450D loader in reply to Mike in Virginia, 11-07-2001 06:09:22  
I didn't use to have to worry about the cost for I only did the repairs. As far as the repairs go, they are easy and fairly basic once you have the components off the tractor. If its been a long time with out the brake lines, you can almost count on new slave cylinders and maybe master cylinders. The early model 450's, 450B and prior, had dry brakes and on those the discs would glaze over and act like ice to an ice skate. The expanders usually had broken return springs, which caused the discs to glaze over faster than normal, and the actuator balls would corrode unevenly so that they would need replacement. The cast expanders could be cleaned up and reused. Hope this helps some, I left Case as they were just coming out with the C models which were rumored to have the wet brakes, same as the dry design but submersed in trans oil.

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