International Dump truck

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Craig Nedrow

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Location
Washington State
First Name
Craig
Truck Year
1973 (have two), 1985
Truck Model
K10, K20, C20
Engine Size
350, 454, 6.2 Detroit
Been working on my IH dump truck. Pulled the heads, and took to shop, back in a couple weeks. Then I get to finish hauling gravel about 100 yards, then gonna sell . Good ol' truck but down sizing. I have doon a ton of work, new tires, brakes, transmission, and now engine. I rebuilt the master cylinder, but cannot get my brakes to work. Have tried several methods, Mighty vac, and a helper pushing the brakes, and got no bubbles out of the system, so am sire that part is good. I did bench bleed the master, it is working good. This has a air assist, and know nothing about this. The brakes are the last thing to get this on the road, if anyone has an idea, lay it on me. Note: in the morning, or when the brakes havn't been pumped, there is resistance on the peddle, but it goes to the floor. Next push no or little resistance.
 

PrairieDrifter

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Location
North Dakota
First Name
Mason
Truck Year
84,79,77,70,48
Truck Model
Suburban k10, bonanza k10, c30 C&C, c10, gmc 1/2ton
Engine Size
350, 350, 350, 350, 350
Does it have the big brake boosters under the cab? Any time we overhauled grain truck brakes we almost always replaced the big boosters, sometimes they had two under the cab. If those boosters don't work good you'll have crappy brakes.

They also had brake fluid running to them, and have to be bled as well. We didn't do a lot of IH's, we mostly rebuilt engines in em. You also didn't mention the year, I assume I about know which model.
 

squaredeal91

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Cave junction Oregon
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Greg bush
Truck Year
1991 SB
Truck Model
K30
Engine Size
5.9 Cummins 12 valve
Been working on my IH dump truck. Pulled the heads, and took to shop, back in a couple weeks. Then I get to finish hauling gravel about 100 yards, then gonna sell . Good ol' truck but down sizing. I have doon a ton of work, new tires, brakes, transmission, and now engine. I rebuilt the master cylinder, but cannot get my brakes to work. Have tried several methods, Mighty vac, and a helper pushing the brakes, and got no bubbles out of the system, so am sire that part is good. I did bench bleed the master, it is working good. This has a air assist, and know nothing about this. The brakes are the last thing to get this on the road, if anyone has an idea, lay it on me. Note: in the morning, or when the brakes havn't been pumped, there is resistance on the peddle, but it goes to the floor. Next push no or little resistance.
Noticed in other thread its got a 345. I'm surprised it's not a 392. Is it not a loadstar?
 

Craig Nedrow

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Location
Washington State
First Name
Craig
Truck Year
1973 (have two), 1985
Truck Model
K10, K20, C20
Engine Size
350, 454, 6.2 Detroit
got the heads back, and Dell and I got the engine mostly back together, at least the heavy stuff. Harry Bugger helped.
 

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fast 99

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Location
Spokane, Washington
First Name
Brian
Truck Year
81,85
Truck Model
K20
Engine Size
350
A little more information would help. Juice brakes on 2+ tons can be very time consuming and expensive to fix right. When you say brakes don't work does that mean pedal goes to floor or high and hard? Were wheel cylinders replaced, drums turned adjusted, and if it does have a booster under running board there is a second master there as well. What condition is it? Also inspect the vacuum booster hose for delamination inside. If suspect replace it.

The previous comment about crappy brakes with bad booster is a total understatement. When those go bad you will have next to no brakes.
 

Craig Nedrow

NADAR UNDER THE RADAR
Supporting Member
Joined
Sep 1, 2018
Posts
882
Reaction score
1,637
Location
Washington State
First Name
Craig
Truck Year
1973 (have two), 1985
Truck Model
K10, K20, C20
Engine Size
350, 454, 6.2 Detroit
You are right about no brakes.... it all started with a wheel cyl, got it fixed and adj, have fluid when I bleed with no bubbles. I did rebuild the master cyl on fire wall. Once I get it running I will mess with the stuff you were talkin about Brian, Good to know there is another master cyl by the booster. I will just replace any bad hoses, cheap insurance. When the brakes are working, they are very good.
 

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