Had this ever so slightly increasing over the last few months that it would start to pull to the left just enough that it effects the steering wheel position a little. Nothing dramatic but enough to be annoying. Only really happens in the last few meters of moderate to heavy braking
Stripped / cleaned & adjusted the brake's front & back yesterday & it's getting better already, but did notice that with the right front brake pads, only ONE pad is very thin, while the other pad has a bit of meat still on it. Could the extra fluid in that caliper be enough to cause a difference in effective braking on THAT wheel.
Seems a pretty trivial thing but spose it's possible aye
johnf_456,
Apr 10, 7:29am
Sticky caliper!
mrfxit,
Apr 10, 7:33am
Nope, ALL pistons pushed back with NO real or unexpected effort. These also run 4 pot calipers & everything behaved "as per expected" Moved the pistons in & out a few times as a precaution because that was a thought I had as well. No leaks, nada. Lots of dust in the back drums & needed adjusting but fine otherwise.
franc123,
Apr 10, 8:27am
Any significant difference in the pad wear between either side of the vehicle, and/or in the case of multi piston calipers like you have between the individual pads is a pretty good indicator that the pistons have been sticking and not releasing properly, not uncommon on Hiluxes, and Cruisers can be bad for it too.I'd be getting the caliper apart, you will probably find a corroded gungy mess in there which hopefully won't have caused too much damage to either the pistons or the areas in the caliper bores where the seals sit.If there is any sign of pitting on the pistons they of course have to be chucked along with the old seals.
johnf_456,
Apr 10, 8:28am
^ as above, my thoughts also.
mrfxit,
Apr 10, 9:05am
I did check for sticking calipers before & after the pad clean Those pads have a rubber backing & a grill cover plus the stainless anti rattle shim cover plate. The grill had worn in to the rubber backing so I sanded that back to a reasonably flat surface plus sanded any surface rust/ muck off.
The rotor was a little stiff when I 1st took off the wheels, but was running reasonably free after cleaning & a short run up the road. The rotors are clean with no ridges & as I said above, the calipers moved back with easily, suggesting that they are working ok & not sticking.
However, I will price up a new set of seals for it later on & see what happens. It's a niggle so far & nothing to really effect it's general braking performance.
Yes it's a common problem for any calipers but perticuerlywith 4x4 type vehicles because of the off road work.
mrfxit,
Apr 10, 9:06am
^^ ^^ ^^ ^^
intrade,
Apr 10, 11:57am
your suspension rubbers ir likely rooted affecting castor causes pull. is my guess . what are the tyre for wear on the outer edge!
mrfxit,
Apr 10, 1:35pm
Both front have the same exact wear on inner & outer edges. Theres been no noticable tyre wear in the last approx 30,000kms & appears to be very consistant. Wheel bearings are still firm & theres no knocking in the suspension. Haven't been able to feel or see any wear in the rubbers. Back spring rubbers have been replaced with nolythene at the same time I rebuilt the springs.
intrade,
Apr 10, 1:50pm
did you have somone look at what the wheel front left is doing when you brake hard . i got a townace van for my naigboaur a few weeks ago and the differential moved like hell. i did however hear a noise while i test drove it. replaced all suspension arms from his old van to that new and hardly noticed anything wrong but you could see how it moved when you where on the ground while other person drove and braked then took offhard again. problem seems now fixed with the parts from his old van.
andrewph,
Apr 10, 7:01pm
If its a leaf-spring front end, maybe shackle bushes. Worth a look.
mrfxit,
Apr 10, 7:06pm
LOL, yea this bit sounds a bit nutty but. no one else around here is able to drive a manual vehicle . never mind something like the Surf Also, I would have suspected that if any bush's were buggered, that the tyres would be showing some odd wear patterns
mrfxit,
Oct 17, 4:59pm
Coil front (IFS)
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