rear wheels are difficult to rotate in nuetral on the hoist?

[islandvitara]

ok so my hilux failed a rwc due to the rear wheels unable to freely rotate when the ute was on the hoist. Its an 89 Ln106 2.8 Hilux single cab 4x4, i just got it home and up on the hoist here and yeah, it is very tight and hard to rotate even with 2 hands!!

i'll be pulling the wheels off and begin trying to find the problem but what are some things that may be causing this? Becuase im searchin around in the dark with this...

My first thoughts are - maybe the brake pads are pushing against the drum? Wheel bearings have given in?

I camt think of anything else...

Its an LSD rear idff also if that makes any difference...??

[Mulcahy]

sounds like either the brakes or a really overtight bearing, start with the brakes and work your way in good luck keep us posted

[popeyehj60]

id say the one of the handbrake shoes is over adjusted. pull the drums off and spin it again.
being lsd u'll need to pull both drums off

[dogbreath_48]

There is meant to be a bit of drag in the brakes but i can't remember the value. If the wheels are difficult to turn by hand id say they're too tight!

[islandvitara]

Hey thanks guys i really appreciate the help, yes i will check both drums to see if the brakes are over adjusted if its beyond that i will definitly be updating this thread about it. i'll sus it out first thing in the morning and get back to you's

Cheers thanks heaps!!

[islandvitara]

Correct you's were - the rear brakes were WAY OVER ADJUSTED!! Partners dad (diesel mechanic) adjusted them off so the wheels spun freely with little effort, thats all it was..i actually noticed that at 100kph te revs came down to 2600rpm - it was 3100rpm before the brakes had been adjusted off..big difference lol



Thanks guys, appreciate your info!!

[RED60]

Correct you's were - the rear brakes were WAY OVER ADJUSTED!! Partners dad (diesel mechanic) adjusted them off so the wheels spun freely with little effort, thats all it was..i actually noticed that at 100kph te revs came down to 2600rpm - it was 3100rpm before the brakes had been adjusted off..big difference lol



Thanks guys, appreciate your info!!

If the vehicle is auto then the rev difference is possible (but that difference is a lot, and I'm surprised you haven't cooked your auto)..... if it's manual, it isn't possible unless your clutch is well on the way out...

[islandvitara]

Hey mate, its a manual 2.8 diesel....in all honesty it was 100kph @ 3100rpm now, adjusted the rear brakes off and now it sits on 100kph @ 2600rpm. Clutch feels fine though???

I drove from sunshine coast to Bundaberg (bout 300km) and all the way it was 100kph @ 3100rpm no kidding. Drove it out of town today and back (after adjusting the rear brakes) and it was sitting nicely on 100kph @ 2600...would of had to have been the brakes? Cant think of anything else...

[sloshy]

You serious? You're probably driving in 5th gear now where as before it only could do 100kph in 4th with the brakes half on.

[islandvitara]

Yeah man seriously lol it held 100kph in 5th ok but it slowed down pretty quick with the throttle off - i didnt notice ad it was the first time id driven it on the highway n figured it was normal to be at 3100rpm @ 100kph...lol it drives so much easier now!!

[RED60]

Interesting concept....... next time yr on the highway..... take it to 3100rpm in top, you should be doing about 120kph, or slightly less.... then while holding those revs... slow it down with your left foot on the brake to 100kph.... it should stay at 3100rpm according to your theory.... or conversly, back your brakes way off at the adjuster... you should be able to hold a 100kph at 2200 rpm... think of the economy...

[thehanko]

Interesting concept....... next time yr on the highway..... take it to 3100rpm in top, you should be doing about 120kph, or slightly less.... then while holding those revs... slow it down with your left foot on the brake to 100kph.... it should stay at 3100rpm according to your theory.... or conversly, back your brakes way off at the adjuster... you should be able to hold a 100kph at 2200 rpm... think of the economy...

they are right dude, gearing is a constant - load doesnt effect pure mathmatics.

but awesome your car is better.

[islandvitara]

Interesting concept....... next time yr on the highway..... take it to 3100rpm in top, you should be doing about 120kph, or slightly less.... then while holding those revs... slow it down with your left foot on the brake to 100kph.... it should stay at 3100rpm according to your theory.... or conversly, back your brakes way off at the adjuster... you should be able to hold a 100kph at 2200 rpm... think of the economy...

they are right dude, gearing is a constant - load doesnt effect pure mathmatics.

but awesome your car is better.

What do you mean by this?

[tas80]

What do you mean by this?

The hilux is a manual, at a certain rpm in any given gear the speed will always be the same, regardless of drag from over adjusted brakes, the only way I can think of that there could be a drop in the required rpm for a given speed is if the clutch had been slipping with the extra drag, but the clutch would have burnt out pretty quickly in that case.

[islandvitara]

Yeah i see what you mean now, well if thats the case the clutch either has been
Burning (could smell anything when i pulled over at a servo) or my eyes were dilarious lol but im 90% sure i took note that it was 3100rpm (close to it) @100kph....strange anyways..


Well now its definitly 2600rpm in 5th @100kph which is normal?? Im running cooper st 31's if that makes a difference?

[UhhOhh]

Well now its definitly 2600rpm in 5th @100kph which is normal?? Im running cooper st 31's if that makes a difference?

Going up in tyre size will make this difference otherwise you have been hallucinating

[Shadow]

Well now its definitly 2600rpm in 5th @100kph which is normal?? Im running cooper st 31's if that makes a difference?

Going up in tyre size will make this difference otherwise you have been hallucinating

only if he adjusted his speedo when he changed his tyre size.

otherwise you could put 54" tyres on the car, and it would still read 100km/hr(speedo) at 2600RPM

[UhhOhh]

Well now its definitly 2600rpm in 5th @100kph which is normal?? Im running cooper st 31's if that makes a difference?

Going up in tyre size will make this difference otherwise you have been hallucinating

only if he adjusted his speedo when he changed his tyre size.

otherwise you could put 54" tyres on the car, and it would still read 100km/hr(speedo) at 2600RPM

very true

[islandvitara]

Ok so this is the update: the rear drums have been getting so hot i can smell the grease burning!!! Noticed it today sitting that lights.....got home and the amount of heat comming from them i could feel from the top of the tyre, splashed a bit of water on the right rear drum and it sizzled and boiled off. WTF? ive concluded that the brakes are over adjusting themselves? Or something is causing them to over adjust? ive tried loosening the handbrake adjustment under the cab but still seems to be tightening up...i have a new set of brake pads for the rear but thats not the point im trying to prevent the current ones from igniting!!

Thoughts? Search didnt come up with much...

[UhhOhh]

Hilux rear drums can over tighten themselves quite easily, the handbrake unit especially. Crap can get in the automatic adjuster and lock the shoes to the drum. Next step take the drum off, clean the dust/grease/mud out of the handbrake and brake assembly, maybe even do the wheel cylinders while you are there then reassemble. 98% chance this will fix your problem.

[Shadow]

Hilux rear drums can over tighten themselves quite easily, the handbrake unit especially. Crap can get in the automatic adjuster and lock the shoes to the drum. Next step take the drum off, clean the dust/grease/mud out of the handbrake and brake assembly, maybe even do the wheel cylinders while you are there then reassemble. 98% chance this will fix your problem.

what he said

I would put a spring kit through it aswell