1610D hydrualic fluid in engine oil

Post your questions or problems you are haviing with your Yanmar tractor here.

Moderator: Aaron

kenr74
Volunteer Poster
Posts: 16
Joined: Sun Apr 16, 2017 12:31 pm

1610D hydrualic fluid in engine oil

Postby kenr74 » Sun Apr 16, 2017 12:38 pm

Recently picked up a new to me 1610D. Starting to think I got screwed and need some advice. :oops:

When I got it home the first thing I did was check all the fluids. Oil was really high and hydraulic wasn't even on the stick. I drained them both and replaced the oil filter and cleaned the hydraulic screen.

Runs great and everything seems to work fine but I checked the fluid levels again and hydraulic is almost empty and engine is overflowing.

I have had oil come out the hose attached to the valve cover when running it hard so I just take it easy. Seems like I am somehow getting hydraulic fluid into the engine though. Water level is fine in the radiator.

Not sure where to start at this point. Looks like the pump is on the side of the engine. Start there or is it a main seal between the engine and transmission?

Aaron
Site Administrator
Posts: 2722
Joined: Thu Jul 26, 2007 12:39 pm
Location: Iowa Park, TX

Re: 1610D hydrualic fluid in engine oil

Postby Aaron » Sun Apr 16, 2017 7:06 pm

The only way for that to happen is through the hydraulic pump. It typically happens when there is something close to deadheading in the system causing lots of excess pressure but can also happen if the hydraulic pump's front seal has failed or blown out (usually from also caused by too much pressure).

winston
Volunteer Poster
Posts: 4648
Joined: Mon Feb 01, 2010 7:29 am
Location: North East Texas

Re: 1610D hydrualic fluid in engine oil

Postby winston » Sun Apr 16, 2017 7:08 pm

Going in the engine through the seal on the hydraulic pump. http://www.hoyetractor.com/PROD/HP-1610.htm

I would suggest you not run the engine with an overflow in the crankcase.

kenr74
Volunteer Poster
Posts: 16
Joined: Sun Apr 16, 2017 12:31 pm

Re: 1610D hydrualic fluid in engine oil

Postby kenr74 » Mon Apr 17, 2017 9:05 am

Thanks. I'll pull the pump and see what I find.

What would cause deadheading?

I have played around with the valve under the seat which seems to control how fast the 3 point lifts/drops. I have to have it almost fully closed or the 3 point raises/drops very fast.

I think the issue existed before I got the tractor but want to make sure I don't cause it once I fix it.

Aaron
Site Administrator
Posts: 2722
Joined: Thu Jul 26, 2007 12:39 pm
Location: Iowa Park, TX

Re: 1610D hydrualic fluid in engine oil

Postby Aaron » Mon Apr 17, 2017 10:13 am

What would cause deadheading?


there are some things in the link below.

http://www.hoyetractor.com/support/know ... article=66

It could also be a piece of oring or debris has plugged up the tiny return port inside the pump that sucks the oil away from the pump's shaft.

kenr74
Volunteer Poster
Posts: 16
Joined: Sun Apr 16, 2017 12:31 pm

Re: 1610D hydrualic fluid in engine oil

Postby kenr74 » Mon Apr 17, 2017 11:19 am

Thank you. I'll do some more reading. First tractor so I have a lot to learn.

I did pull the pump and there is very little sign of a gasket. That doesn't explain the leak but looks like somebody had already dug into it.

Is there a rebuild kit for the pump or is it just a throw away? Look like I need to remove the gear first. Is that just a skinny socket or some special way to get in to the nut?

Aaron
Site Administrator
Posts: 2722
Joined: Thu Jul 26, 2007 12:39 pm
Location: Iowa Park, TX

Re: 1610D hydrualic fluid in engine oil

Postby Aaron » Mon Apr 17, 2017 11:51 am

The gear will just pull off and then you can remove the nut holding the hex adapter piece with a regular socket. You can replace the orings in the pump and the front seal but that is about it.
1610.JPG
1610.JPG (46.37 KiB) Viewed 1839 times

winston
Volunteer Poster
Posts: 4648
Joined: Mon Feb 01, 2010 7:29 am
Location: North East Texas

Re: 1610D hydrualic fluid in engine oil

Postby winston » Mon Apr 17, 2017 12:18 pm

Supposing your hydraulic valve looks like this. http://www.hoyetractor.com/PROD/HV-451.htm

If so, the little lever on the side of it is used to control the lift drop speed. The round handle in front is only used to lock the lift. Should be wide open in normal use.

kenr74
Volunteer Poster
Posts: 16
Joined: Sun Apr 16, 2017 12:31 pm

Re: 1610D hydrualic fluid in engine oil

Postby kenr74 » Mon Apr 17, 2017 8:21 pm

winston wrote:Supposing your hydraulic valve looks like this. http://www.hoyetractor.com/PROD/HV-451.htm

If so, the little lever on the side of it is used to control the lift drop speed. The round handle in front is only used to lock the lift. Should be wide open in normal use.



That is the one I have. I have a feeling that caused my issue. The knob was turned almost all the way closed when I got it. I'm assuming they were controlling the speed by closing the valve.

kenr74
Volunteer Poster
Posts: 16
Joined: Sun Apr 16, 2017 12:31 pm

Re: 1610D hydrualic fluid in engine oil

Postby kenr74 » Mon Apr 17, 2017 8:26 pm

Aaron wrote:The gear will just pull off and then you can remove the nut holding the hex adapter piece with a regular socket. You can replace the orings in the pump and the front seal but that is about it.
1610.JPG


O-rings look fine. Do you have a part number for the front seal? I'll add that to an order. If that doesn't work I'll have to go for the whole pump.

Aaron
Site Administrator
Posts: 2722
Joined: Thu Jul 26, 2007 12:39 pm
Location: Iowa Park, TX

Re: 1610D hydrualic fluid in engine oil

Postby Aaron » Tue Apr 18, 2017 11:43 am


kenr74
Volunteer Poster
Posts: 16
Joined: Sun Apr 16, 2017 12:31 pm

Re: 1610D hydrualic fluid in engine oil

Postby kenr74 » Thu Apr 20, 2017 4:27 pm

Looks like parts are showing up tomorrow. Hopefully I'll be up and running by the weekend.

Nice to have a company that actually does what they say and on time. :D

kenr74
Volunteer Poster
Posts: 16
Joined: Sun Apr 16, 2017 12:31 pm

Re: 1610D hydrualic fluid in engine oil

Postby kenr74 » Wed May 03, 2017 4:26 pm

Just wanted to update this one. New seal did the trick. Up and running and seems to be keeping the oil level right where it should be.

kenr74
Volunteer Poster
Posts: 16
Joined: Sun Apr 16, 2017 12:31 pm

Re: 1610D hydrualic fluid in engine oil

Postby kenr74 » Mon Apr 16, 2018 12:50 pm

Unfortunately I'm back with the same issue. I'm not sure if I am doing something wrong or I maybe have a bad valve.

I took apart the loader valve and cleaned it. Didn't see anything obvious.

I get a slight squeal from the valve under the seat when trying to lift something and it seems to bleed off if I don't keep the lever in the up position.

Any ideas on what I should try next? I hate to replace the pump if I have another problem.

winston
Volunteer Poster
Posts: 4648
Joined: Mon Feb 01, 2010 7:29 am
Location: North East Texas

Re: 1610D hydrualic fluid in engine oil

Postby winston » Mon Apr 16, 2018 3:20 pm

Is your lockout valve wide open? Should be


Return to “Tech Support”

Who is online

Users browsing this forum: No registered users and 2 guests