Brake issues

Andelles

Observer
Anyone had issues with their brakes not working properly? Especially those with bigger tyres..
Or found any ways of improving their effectiveness?
Those running 37s, will the brakes lock up on the road?

Brakes on my truck seem particularly crap. I know I'm running quite big tyres, but they seem disproportionately bad.. they barely lock on the dirt, when fully adjusted and bled.

My dad always ran 255 XZLs, which are close to 37, and I'm sure I remember him locking it up on the road a few times..

Lastly effectiveness in reverse, for example when on a steep hill. Mine do nothing, even on a very moderate slope, I have to go for the handbrake to stop it rolling. Which as I discovered 1/2 way up an extremely steep loose hill last night, does not always work..
Wait till you drive the newer ones virtlly no exauhst brake action and you have to pump the brakes to get any efective braking action usless of road on any slope my
P pedal hits the floor mitsii say its normal
 

Amesz00

Adventurer
Good call on the handbrake glazing.. hadn't thought of that.
Whatever I end up doing or finding I'll report here.

Out of interest how many would be actually interested in a disc upgrade?

I still have not ruled out the possibility that something isn't working- but it does seem odd that they've never been really any good.

I have driven the newer 3L ones only a couple times, and was not impressed at all- with any part of them.
Interestingly I just discovered the new rosa bus still has the 4m50 4.9L, but with even less torque than before at 440nm. I didn't honestly think that motor could be detuned any more than it is in the 84 lol.
 

trackadda

Observer
if anyone lives in Rockhampton Qld call in and see jeff at BRAMAC power brake specialists. 278 campbell street. www.bramac.com.au. they have been doing a upgraded booster for all the 70 series cruisers and getting great results. jeff, the owner is a great person to talk to and i would think that if any body can help he will be able to. note, i only know jeff through purchasing a booster for my troopy and a few phone conversations i have had with him but will be going up to see him some time in the next month. has any one had issues with the nps isuzu doing the same?
 

Aussie Iron

Explorer
if anyone lives in Rockhampton Qld call in and see jeff at BRAMAC power brake specialists. 278 campbell street. www.bramac.com.au.

Rockhampton is just north of me and yes I will have to go there shortly so when I do Bramac will be on my list. I've dealt with them for my truck brakes.

Out of interest how many would be actually interested in a disc upgrade?

Any up grade I would certainly look at. ( You should know me by now.)

Dan.
 

Amesz00

Adventurer
this is a totally enclosed disc brake (fluid fill I think) for mining application. For road requires certification.

Not something I'd consider, but does suggest that a disc conversion is feasible.
http://www.advancedbraking.com/imag...INSTALLATION_OF_SIBS_TO_FUSO_CANTER_FG649.pdf

A few of our mining busses were put on SIBS brakes, they are a sealed wet disc setup. From memory it was a little over 20k.
I spoke to them the other day, just to see what options they might have had, interestingly they no longer do wheel end brakes for canters. Only a driveline Ebrake- that is a power hydraulic disc on the input to the rear diff- as a park and emergency brake.
He said that they found the 16" rims with huge offset they couldn't get a big enough brake under to make it worth the changeover, and that customers were unwilling to incur the added cost of upgrading wheels also.

I think it's probably for this reason the 2wd canter discs are all fairly small dia, but with twin calipers f&r. The model years same as mine (fg84, ~2011) run 235mm rotors, the later trucks are 310.

I rang a few places around Perth about just the simpler stuff, bigger booster etc. Nobody wants to know about it.

That gumtree ad is interesting, so it's a 2000 cab on a 05 truck, ex mine and converted to disc..? Are they SIBS or something else I wonder.
 

Amesz00

Adventurer
Bit of a follow up on this. As I said in the previous post, I rang around a bunch of brake places in Perth to ask about it, inc getting different compound shoes, and was told by all that there's no such thing.
Leading me to think that a custom disc conv was going to be the way out.
My mechanic friend spoke to his brake supplier, and was apparently told that they sell a shoe compound for the jap trucks with crap brakes, that is allegedly a fair bit more 'bitey'..
So I have a set of these to try out, hoping to get them fitted this
wkend.
Fingers crossed.
 

SkiFreak

Crazy Person
I think that the Flintsone's breaking methodology is probably better than that of a Fuso FG.
fred-flinstone-brakes.jpg
Only problem for me is that in my truck I am too far off the ground for my feet to reach the ground. :(

Another nice thing would be to have brakes that were capable of stopping the truck when it's going backwards!
A disk upgrade would probably address that issue too.
 

gait

Explorer
.....
My mechanic friend spoke to his brake supplier, and was apparently told that they sell a shoe compound for the jap trucks with crap brakes, that is allegedly a fair bit more 'bitey'..
So I have a set of these to try out, hoping to get them fitted this
wkend.
Fingers crossed.

hopefully .... no pressure ... next weekend will do :)

do you have an accelerometer (maybe as easy as app on phone) for before and after?
 

HazMan

Observer
I think that the Flintsone's breaking methodology is probably better than that of a Fuso FG.
View attachment 407971
Only problem for me is that in my truck I am too far off the ground for my feet to reach the ground. :(

Another nice thing would be to have brakes that were capable of stopping the truck when it's going backwards!
A disk upgrade would probably address that issue too.

That backwards thing was a big surprise for me in the Victorian high country!
 

DzlToy

Explorer
Andrew, if your new shoes do not work out as planned, I have a few options for you:

Dynatrac Pro Rock 80 (a matching pair of course with 360mm discs IIRC)

ProRock-80-for-JK.jpg



A shiny new Atlas Four Speed Transfer Case, which should get your low low crawl ratio down into the 180:1 - 190:1 range. This allows you MUCH more control in technical terrain and also slows the truck measurably, thereby avoiding the "momentum" strategy, which is quite often bouncy, uncontrolled and damaging to the trail or your truck.

http://www.advanceadapters.com/products/atlas-4-speed-transfer-case-builder/


To go on the back of your shiny new Atlas, we will round out your shopping trip on your AMEX Black Card with a transfer case parking brake. This multiplies your braking power by the ratio of your ring and pinion (5.29 - 5.89?), so a small rotor and caliper can be used.

https://www.highangledriveline.com/e_brake.html


You might as well toss in a four link suspension, some ORI dampers, custom aluminum beadlock wheels and maybe a Gigglepin winch for those times that you just can't drive out.

Cheers
 

Spanna 53

Member
Encased wet discs have been for at least 25 or30 years a Geelong diff engineer Frank Parsons who was doing 6 wheel drive conversions was experimenting with them for the mining industry looked on Multidrive web site and no mention of them doing them these days will check with my contact probably when he comes back from the warmer climes in a couple of months . Ross
 

kerry

Expedition Leader
I had my brakes rebuilt by the Fuso dealer in Longmont, CO. What a huge difference. Much better. Initially it was grabbing on the left front so I took them back for further adjustment. They worked on them for a long time and service manager mentioned they were having trouble bleeding (?) a balancing valve between the two sides of the front brakes. Never heard of something like that before but now I have no complaints about the brakes anymore. I think they said the front wheel cylinders weren't working when they checked them.
 

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