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I have a new to me 1997 e350 EB Quigley conversion with the v10. Part of the quigley conversion is that it uses a 1995 F350 Dana 60 front axle for 4x4. Right now i am having an issue with the front brakes slightly dragging. I have a done decent amount of auto repair but this is my first rodeo with econolines. This issue really has me stumped though.
Issue: Front rotors slightly drag, very difficult to turn using studs only and is heating up my front hubs. I can use a clamp to push the calipers in and they will no longer drag. After a few pumps they are back to dragging.
New parts:
-Replaced front brakes with hawk lts pads and cryogenic 'frozen' rotors, this is after i bought the van and realized the brakes were cooked.
-New brake lines
-New wheel bearings in the dana 60, everything turns smooth when the brakes dont drag
-Calipers apear to be a somewhat recent reman, all the rubber looks good and the slides move easy.
-All new rear brakes(drums)
Diagnostics Already Done
-Wheel bearings are good
-Inspected the master cylinder and it appears to be reman with a original res.
-Inspected rod distance for the booster to MC, oddly it was backed out to 1.5 inch when factory is about 1.
- backing of the MC from the booster did not alleviate the issue nor did cracking any of the lines.
Although the MC might be the wrong part, it doesnt seem to be the issue. I am starting to suspect the ABS unit. I should add that the van has 4w ABS but it is inop due to one of the quigley speed rings missing on the rotor. I cant find great info on how to diagnose this thing, it currently only throws a code for the missing sensor. Would I be able to pull the fuse on this thing to disable and isolate the brake drag?
Any ideas of where to go from here are appriciated.
The brakes drag normally on these vehicles. Jack up the front wheels, and put a torque wrench on the lug nuts to see how much torque it takes to turn it.
As a comparison, my 1 ton SRW 4X4 takes 8ft/lbs to break the stickion of the brake pads.
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