86 K10, pulls right under hard braking
 

Hey guys

My 86 K10 pulls to the right while braking hard. I don't notice it normally, but I am very easy on my brakes. It has newer calipers, pads, and machined rotors on the front

It's not something I am terribly scared about, more of an annoyence.....

I am wondering if it is the MC, or the proportioning valve.....being the lines look good, and I am not loosing any fluid at all

Thanks
Cameron

Re: 86 K10, pulls right under hard braking
 

could be alot of things but if the calipers are both good and the pads are wearing evenly id also check to make sure that the wheel bearings are good then the proportioning valve

Re: 86 K10, pulls right under hard braking
 

Could be a brake hose collapsing internally causing a restriction in fluid flow to one side, Have seen that a couple times.

Re: 86 K10, pulls right under hard braking
 

I strongly agree with RestroRob. I ran into the same thing a few years back w/ my 83. If that's what it is, expect it to get worse.

Re: 86 K10, pulls right under hard braking
 

:metal: Hey... what do ya know.. mine does the same thing, well my C10 does, it pulls right on hard braking... so guess what I do... STEER LEFT! :hm:
Brandon

Re: 86 K10, pulls right under hard braking
 

Bet that's fun on wet roads.... http://www.lawnsite.com/images/smilies/wink.gif

Re: 86 K10, pulls right under hard braking
 

Yeah it sounds like a brake hose issue i had a '92 S10 that did that and it was a bad hose on the drivers side.

If you replace the hoses i'd go with a set of Earls SS Braided ones i'v got them on my '87 and it's been at least 10 yr's now and no problems yet and they give a much firmer pedle cuz theres no hose flex under braking pressure.

Good luck

Re: 86 K10, pulls right under hard braking
 

I had the same problem... and it ended up being the rubber lines breaking down internally. If it pulls right; then you need to replace the left side... and vise-versa if it pulls to the left. I recommend changing them both at the same time... if you dont; you'll be under there again soon. :)

Anthony

Re: 86 K10, pulls right under hard braking
 

Good point, Anthony. If one side's not getting fluid, the other side pulls. Seems backwards.

Re: 86 K10, pulls right under hard braking
 

Check or replace the front brake hoses, would be my vote. I have had that happen on a couple trucks.

Re: 86 K10, pulls right under hard braking
 

My 84 does same thing. because of advice from all of you will be replacing my brake hoses soon also. seems like a common problem with these trucks.

Re: 86 K10, pulls right under hard braking
 

I had a weird left-then-right-then straight thing a few years ago myself. New front hoses and calipers solved it. I believe the calipers were shot and I ran throught pads more quickly than I shouldv'e been.

Rebuilt calipers were $15 each at NAPA and new hoses ran about $30 per side. It's been fine ever since.

-Kevin
1986 C10 Suburban Silverado

Re: 86 K10, pulls right under hard braking
 

I had that trouble with mine too until I replaced the calipers.

Re: 86 K10, pulls right under hard braking
 

I have had the brake hose and the caliper cause this before.

Re: 86 K10, pulls right under hard braking
 

I vote new brake hoses. As stated above they are probably internally coming apart.

Re: 86 K10, pulls right under hard braking
 

Had it happen on my '69 Z/28. Pulls hard to the right on braking; many have told me its a front hose, but its one of those "round to it" things. With 37" of fresh snow....brakes on a summer cruiser isn't really priority 1.

I respectfully disagree with 87 Stepper on the hoses. I'd just pick up OEM replacement rubber hoses from a parts store. I've always thought that SS lines were more for high-performance, heavy duty braking systems where you really need to feel the pedal, and expansion cannot be tolerated, like racing. In a 20 year old 4x4 truck...I'd save my money and just get the rubber lines and worry about it again in another 20 years.

Re: 86 K10, pulls right under hard braking
 

Well I will just replace both front hoses, and I will just be getting the standard rubber hoses from our Jobber, and put them on at the shop where it's warm, and I have a hoist.....So far everything including belts, and hoses have been original on this truck, so I would assume the front flex lines are aswell, 21 years is old enough to retire them, they've done there job well

Duro

Re: 86 K10, pulls right under hard braking
 

Warm, good. Cold, bad. Good for you for having a heated shop. Mine were a real bear. They rusted on- had to heat-em up to get them off. Careful around the gas lines on pass. side.