D250 front clunk from forward to reverse - must be calipers

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D250 front clunk from forward to reverse - must be calipers

Postby Diesel » Tue Aug 09, 2016 9:25 pm

I have all new front end on my D250 and it drives amazing. The only thing I have that bugs me is a clunk from forward to reverse that comes from the front end. It sounds like the calipers are moving from front to back in their seats. The only thing I don't have installed are the rubber bands. I don't have them any more but I have tons of rubber bands. What exactly do I do with them and will that keep the calipers from moving front to back and clunking?
1991.5 D250 Intercooled A518
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Re: D250 front clunk from forward to reverse - must be calipers

Postby PToombs » Wed Aug 10, 2016 4:59 pm

Are the mounting brackets worn where the caliper slides? Mine were. I had that clunk, and the bracket was so worn the outer pad would stick and only the inner would wear because the caliper wouldn't slide. Found some used better brackets and cured both problems.
pete

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Re: D250 front clunk from forward to reverse - must be calipers

Postby ArtBee » Wed Feb 22, 2017 7:30 pm

I had that same problem on my high mile 93 D250, mine would also often split the retainer plate on the left side (the rear one) in the thin springy area. I agree that the caliper bracket is worn out on your truck.
1993 W350, 1991 D250 (non IC), 1969 Plymouth GTX, 1961 Chrysler 300G, 1966 Chev BelAir
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Re: D250 front clunk from forward to reverse - must be calipers

Postby Richie O » Thu Feb 23, 2017 7:24 pm

My 92 w250 would drive me nuts over bumpy roads. They would clatter so bad unless I would touch the brakes. When I changed the front axle over the new one had much tighter caliper mounts and no more clunk. 8)
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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Re: D250 front clunk from forward to reverse - must be calipers

Postby Remps » Sat Feb 25, 2017 12:23 am

Good luck finding such a thing as a replacement caliper mount. Having caliper mount issues myself. Is it possible to weld/burn some extra metal onto the bracket and grind it to a tighter fit for the caliper?
'90 D250 R/C,727,IC,6x.009's,1/8" bump,fuel psi,straight pipe w/5" stack.
'90 W250 R/C,47rh,K@N,HX35,1/8" bump,2nd gen IC,boost,egt,trans temp.3.07's.
'96 2500 S/C L/B,2wd,NV5600,3.54 L/S,cai,egt,pacbrake,mbrp exhaust,10 plate.
Bring back the Bank of Canada, PRE- 1974.
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Re: D250 front clunk from forward to reverse - must be calipers

Postby Richie O » Sat Feb 25, 2017 3:55 pm

I would try it. If its cast steel it would weld ok. Run a bead of 7018 on it and run her. :D Years ago I welded up a yoke that broke one ear off. I built it up and filed the bed where the u joint cap sat, drilled a hole for the hold down and ran it for a whole year plowing snow commercially.
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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Re: D250 front clunk from forward to reverse - must be calipers

Postby PToombs » Sat Feb 25, 2017 3:59 pm

Remps, I found a set, Bill Gilbert had them. He gets parts trucks and sells stuff. You could weld it up, just test fit, and allow clearance for when they get hot and expand. Mine were clunking like a SOB until I changed the brackets.
pete

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Re: D250 front clunk from forward to reverse - must be calipers

Postby Remps » Sat Feb 25, 2017 9:57 pm

Yet another reason I need to invest in a welder. Would a cheapo 110V unit do the job, or would a stick welder do better for adding metal? I'll keep those parts in mind Pete, thanks.
'90 D250 R/C,727,IC,6x.009's,1/8" bump,fuel psi,straight pipe w/5" stack.
'90 W250 R/C,47rh,K@N,HX35,1/8" bump,2nd gen IC,boost,egt,trans temp.3.07's.
'96 2500 S/C L/B,2wd,NV5600,3.54 L/S,cai,egt,pacbrake,mbrp exhaust,10 plate.
Bring back the Bank of Canada, PRE- 1974.
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