case ih 895 oil pump

[farmerste]

I have just changed the oil pump on my stockman 895 as the old one was getting very tired, Replaced it with a new one and also got a kit of intatrac to speed up the pump( basicaly a smaller cog and a spacer plate) Works well and is a lot faster with loader on but it makes a hell of a whine which gets louder as the pump/engine runs faster. Any ideas why? I didnt replace the foam padding off the old pump onto the new,could that be why its noisy though i cant see it making mush of a difference!

thanks

 

[Mursal]

Probably fine, just check filter especially the seal, is the oil frothy, like its sucking air?
Do they have a gauze filter as well, I'm not sure?

 

[Richard Devon]

FarmerSte,

I wouldn't have thought that foam piece would make much odds to the noise. You can add upto 5 galls over the dipstick max mark without causing much harm. You are no doubt already aware that the correct way to check the level is to start the tractor and run it for a few minutes and then stop and check the levels afterwards.

There were issues with noise which were not found to be harmful to the tractor and sounded like it was coming from the steering, more noticeable when it gets hot and it was the result of instability in the pressure regulated circuits caused by the hydraulic pump pulses interacting with the priority flow divider (steering -vs- everything else) and the regulated circuit pressure regulator (MFD/IPTO/Powershift)

Basically just try to see if the noise goes away with the PTO engaged - to cure it involved changing the flow divider and regulator valve.

If the noise is felt to be related to the steering then the cure was to fit some rubber steering supply pipes.


For what its worth brother's 885 started doing it after we changed the hyd pump.....we are going to live with it

 

[Richard Devon]

so Farmerste was this information useful or not????

 

[Mursal]

Long gone ..............
You didn't even get a Like ................

 

[farmerste]

still here!!!! just never received a notification i had a reply! Still noisy but getting used to it, guess its mainly down to the pump running a lot faster on lower revs so can hear it over engine noise.

 

[Mursal]

just never received a notification

That old chestnut ...........

 

[Dbd]

Hi Richard,

I hope you don’t mind a fellow Devonian dredging up this old thread. We have both an 885 and 895XL in the family. Hydraulics on 885 are good and fast enough with loader to be useful whereas the 895 is woefully slow. It has had a new pump and the steering is brilliant even at idle revs but I have to rev the b****cks off it to get any performance from the loader, link arms or Spools. I have been wondering if there is a problem with the flow diverter. I also have the load buzzing noise with the new pump which stops as soon as the steering wheel is moved. I was also wondering if the pressure relief valve was at play here? Most grateful for any ideas you might have. Thanks.

 

[Classichay]

Out of curiosity what did the pump speed kit cost you? We replaced our pump and it makes a noise abit unless it’s got a few revs on.( Vapormatic pump )

 

[Gapples]

Hi Richard,

I hope you don’t mind a fellow Devonian dredging up this old thread. We have both an 885 and 895XL in the family. Hydraulics on 885 are good and fast enough with loader to be useful whereas the 895 is woefully slow. It has had a new pump and the steering is brilliant even at idle revs but I have to rev the b****cks off it to get any performance from the loader, link arms or Spools. I have been wondering if there is a problem with the flow diverter. I also have the load buzzing noise with the new pump which stops as soon as the steering wheel is moved. I was also wondering if the pressure relief valve was at play here? Most grateful for any ideas you might have. Thanks.

Hi

Yes, it could be your flow divider sticking, allowing full flow through the central orifice to the steering but if if it not moving down fully it will be restricting flow to the rest of the hydraulics.
Are the arms slow on the back of the tractor ?
Because if they are normal the fault may well be something else.

A flow test on the rear tipping pipe will tell you straight away.

 

[Dbd]

Hi

Yes, it could be your flow divider sticking, allowing full flow through the central orifice to the steering but if if it not moving down fully it will be restricting flow to the rest of the hydraulics.
Are the arms slow on the back of the tractor ?
Because if they are normal the fault may well be something else.

A flow test on the rear tipping pipe will tell you straight away.

The arms are slow. Please excuse my ignorance - is it possible to do a flow test without special equipment?
Also if the flow diverter was sticking, is that something that will be easy to confirm/rectify by opening the ‘valve chest‘ that the pump mounts on?

 

[Dbd]

The arms are slow. Please excuse my ignorance - is it possible to do a flow test without special equipment?
Also if the flow diverter was sticking, is that something that will be easy to confirm/rectify by opening the ‘valve chest‘ that the pump mounts on?

...and thank you very much for your advice. Much appreciated!

 

[Gapples]

The arms are slow. Please excuse my ignorance - is it possible to do a flow test without special equipment?
Also if the flow diverter was sticking, is that something that will be easy to confirm/rectify by opening the ‘valve chest‘ that the pump mounts on?

No you'll need a flow meter to check flow, all dealers will have, so will most independent mechanic's these days I would have thought, my mate certainly does.

As for the flow divider, it's directly under the the hydraulic filter.
If you look on the MCV ( the big block the filter mounts on ) on the bottom of the block are 2 bungs, the bigger bung near the centre is the flow divider.
Take the bung out, you'll need a clean bucket to catch some oil, under the bung is a spring, the goes into the flow divider valve.
This valve should pull out very easily.
If it sticking it could cause your issues, you may have to put something like rawl bolt in to pull it out.

 

[Dbd]

Thanks Gapples. That’s really helpful. I will find someone with a flow gauge and proceed from there. Will report back in due course what I find.

 

[Skintagain]

No you'll need a flow meter to check flow, all dealers will have, so will most independent mechanic's these days I would have thought, my mate certainly does.

As for the flow divider, it's directly under the the hydraulic filter.
If you look on the MCV ( the big block the filter mounts on ) on the bottom of the block are 2 bungs, the bigger bung near the centre is the flow divider.
Take the bung out, you'll need a clean bucket to catch some oil, under the bung is a spring, the goes into the flow divider valve.
This valve should pull out very easily.
If it sticking it could cause your issues, you may have to put something like rawl bolt in to pull it out.

I think I need to do this. I have to waggle the steering wheel when lifting a bucket full of Planings or a heavy silage bale. Every time I touch the steering wheel the loader shoots up

 

[Dbd]

No you'll need a flow meter to check flow, all dealers will have, so will most independent mechanic's these days I would have thought, my mate certainly does.

As for the flow divider, it's directly under the the hydraulic filter.
If you look on the MCV ( the big block the filter mounts on ) on the bottom of the block are 2 bungs, the bigger bung near the centre is the flow divider.
Take the bung out, you'll need a clean bucket to catch some oil, under the bung is a spring, the goes into the flow divider valve.
This valve should pull out very easily.
If it sticking it could cause your issues, you may have to put something like rawl bolt in to pull it out.

I haven’t got round to checking the flow yet but I did remove the flow divider for a look yesterday. It came out easily. I measured the spring at 61mm (but think a shortened spring might actually bias the flow more away from steering anyway?). I did notice a tiny bit of scoring and tried to get a picture. I’m not sure it was enough to be sticky but it’s clearly a very exact tolerance.
on reassembly I found the performance unchanged except for a few moments when I thought it was better at idle revs.
I’m conscious that the flow divider and MCV are paired so don’t want to start messing around with anything.
could I perhaps run it without the flow divider fitted to see if performance is markedly better (less steering of course) as a way of checking - or am I going to over pressure something?
Grateful for your wisdom?
Also had oil pressure light flicker on And off a bit yesterday when well warmed up and on a slight bank sloping away to left. Checked oil which is just below max. Happened a couple If time this week. I’m wondering if the oil pump is on the way out?

 

[Classichay]

Change the sender for your oil pump and get it good and hot and use a pressure tester you can get them off eBay cheap enough oil cold has an easier capacity to reach higher pressure hot is a different ball game, any doubt change the pump, a ceased engine is a whole lot dearer this a fitted pump.

 

[Gapples]

I haven’t got round to checking the flow yet but I did remove the flow divider for a look yesterday. It came out easily. I measured the spring at 61mm (but think a shortened spring might actually bias the flow more away from steering anyway?). I did notice a tiny bit of scoring and tried to get a picture. I’m not sure it was enough to be sticky but it’s clearly a very exact tolerance.
on reassembly I found the performance unchanged except for a few moments when I thought it was better at idle revs.
I’m conscious that the flow divider and MCV are paired so don’t want to start messing around with anything.
could I perhaps run it without the flow divider fitted to see if performance is markedly better (less steering of course) as a way of checking - or am I going to over pressure something?
Grateful for your wisdom?
Also had oil pressure light flicker on And off a bit yesterday when well warmed up and on a slight bank sloping away to left. Checked oil which is just below max. Happened a couple If time this week. I’m wondering if the oil pump is on the way out?

If the flow divider is lovely & free moving then just leave it in, you can polish the flow divider with fine wet n dry paper soaked in oil.

Out of interest do the rear arm lift if you pull up the tipping pipe lever to blow the relief valve

 

[Dbd]

Change the sender for your oil pump and get it good and hot and use a pressure tester you can get them off eBay cheap enough oil cold has an easier capacity to reach higher pressure hot is a different ball game, any doubt change the pump, a ceased engine is a whole lot dearer this a fitted pump.

Thanks very much Classichay. I know what you say is sound advice I have the bits on order and will investigate fully before using the tractor again.
It also occurred to me that if the was a strainer on the oil pump intake and it was bunged up with crud it might also explain why the light was intermittent and seems to show when the tractor leans to one side or goes over a bump. Doesn’t seem to make a difference whether hot or cold and it is only coming on occasionally and not at all when on the level even when hot and working hard.

 

[Dbd]

If the flow divider is lovely & free moving then just leave it in, you can polish the flow divider with fine wet n dry paper soaked in oil.

Out of interest do the rear arm lift if you pull up the tipping pipe lever to blow the relief valve

Thanks Gapples but you have puzzled me - I don’t think I have a tipping pipe lever unless I’m being very stupid? 2 spools. A trailer brake pipe and a loader properly plumed in but no separate tipping service.