Case 885 Brakes
- Thread starter blake999
- Start date
Are both side locking up individually when you split/unlatch the brakes? It is possible that when there is a leak say on the right hand piston that the latched pedals will go to the floor but on splitting the left brake will work individually. Due to the action of the balancing valve.
They both lock when working them individually but you have to use considerable effort to do that, there is no leaks in the system because the pedals remain firm latched or unlatched, I notice the left pedal travels further than the right so I'm going to look at the adjustment set up at the master cylinders
- Location
- Down on the edge of the world
have you got trailer braking on this tractor?
Gapples
Member
You know what, we're all beating around the bush here.
If as you say you've got 400 psi up to 1000 psi with a gauge tee'd into the brake pipe at the back axle with a good pedal & yet very poor brakes then you have an issue in the brakes within the axle.
You have more than enough pressure to lock the wheels.
If as you say you've got 400 psi up to 1000 psi with a gauge tee'd into the brake pipe at the back axle with a good pedal & yet very poor brakes then you have an issue in the brakes within the axle.
You have more than enough pressure to lock the wheels.
fermerboy
Member
- Location
- Banffshire
It's a long time since I was in a 885 back end. But is it possible that it can be incorrectly assembled?? Or something missing altogether? New discs not the right thickness? I just can't remember off hand. Will dig out he manual and have a look.
I had one years ago with a similar problem, turned out to be the operator was adding Molyslip additive to the transmission as it had a noisy diff but it affected the brake grip badly just like this one but e can discount Molyslip because I have changed the oil so many times also new discs, but the symptom was exactly the same
- Location
- Down on the edge of the world
only time i have ever had problems with poor brake performance on Cases was on 5100 series and it was warped backing discs - on the side of the final drives.....caused by bad driving.
make sure you bleed the balance line out
make sure you bleed the balance line out
See Gapples' post
Right-arm fast
Member
Have the brake pistons have come to the end of their travel too much wear on piston and stationary separator plate ? Has somebody skimmed them in the past so could be reused ?
- Location
- Welshpool Powys
Have you checked the brake balancing valve by master cylinders?
Right-arm fast
Member
If it's the same as the 674 there will be a disc between the master cylinders which is held out when the the pedals are right up. When it's out it allows one side of the independent brakes to be used as the port is blocked by a poppet valve. When both pedals are pressed the disc is allowed to move right in to its housing which unseats a poppet valve and allows the pressure to be equalised between both master cylinders for equal braking. Check the disc is out when the pedal/s are up and right in when braking with both pedals. If you have good pressure at the trumpet housings I doubt this will be your problem. I would be looking in the trumpet housings at the brakes?
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- Location
- Central Scotland
Have you checked that the restrictor/filter in the pipe that supplies the little white header tank isnt choked?
I thought there was a more recent thread on this but I can't find it. IH 885xl 2wd brakes always worked really well. Now one pedal is completely spongy and whatever you do won't provide any braking. The other one will provide braking after pumping. Any thoughts please. Thanks
spin cycle
Member
- Location
- north norfolk
i had a thread recently...anyhoo you could just latch the brakes together
.....not as if massive speed is going to be an issue
2wd on oversize rowcrops is like a rocket ship. 4wd are so slow. Would you be so kind as to link the thread......i had a thread recently...anyhoo you could just latch the brakes together