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Any idea where this came from?????

KsM715

Well-known member
5,149
142
63
Location
St George Ks
Please tell us your going to put a little more wheelbase in yours. As tall as that is I think it would flip over backwards going up my driveway.

Cool looking rig though. [thumbzup]
 

Jones

Well-known member
2,237
83
48
Location
Sacramento, California
Ummm, back to the original subject... hate to spoil the fun but somewhere I remember a question going by about brakes.

The early M800 series trucks are air over hydraulic and the deuce brake booster stuff may work if you have enough master cylinder capacity.

The later M900 series are straight air and so the booster is of no value. But you'll need to convert to an E series brake valve and upgrade the air system with; compressor with enough output, a wet tank, air dryer, emergency (spring brake) valve, relay and quick release valves and the air line plumbing to make it all work properly.

I thought at one point that disc brakes on the baby HEMTT would be a nifty changeover but it seems that Rockwell military axle housings' have different backing plate flange bolt patterns than the civilian axle housings. So much for a bolt-in swap.
Having to make new brake caliper stands was the stopping point for me; although some cold rainy winter night I may dust off the idea.

The self-cleaning, ease of maintenance benefits are marginal as the military Rockwell drum brakes are more than sufficient to stop a fully loaded 5 ton.
A better conversion would be to "S" cam brakes from the original wedge brakes and parts for that swap are out there and cheap.

OK, back to your high jinks, you little scallywags.
 

bullydogcj

New member
20
0
0
Location
narrows va
I am also thinking aboit using a cutting brake like used in Rockcrawlers. going to a caliper on a pinion brake. Just for some type of a brake in case of a stocke brake failure
 

Jones

Well-known member
2,237
83
48
Location
Sacramento, California
There are both drum and disc driveshaft brakes used as emergency/parking brakes. I'm pretty sure a lot of forklifts use the same set-up.

If you end up with the full air 5 ton Rockwells I guarantee you won't have to worry about brake failure. The spring brakes on the rear will apply whether you want them to or not, as soon as your air pressure drops below a certain point.
 
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