Knocking... Oil Filters... What's Next?

[Jackrabbit_Slim]

Knocking... Oil Filters... What\'s Next?

Forgive me for "doubling up" on this. Have a similar post on the "Kubota Forum," but hope I can get a little more feedback by posting here as well.

Have a used Kubota B2710 HST with 211 hrs. on the clock. Looks to me like the original owner over filled the Hydraulic/Transmission fluid to just about twice the height called for on the dipstick. What I mean by that, is that the fluid level shows as high above the upper line on the dipstick as the distance between the top and bottom lines on the dipstick. I'm sure you can appreciate that I'm not running this machine, and won't until I get this fixed up.

I'm new to this HST thing, and wonder if this excess fluid might account for a knocking sound I hear from the rear end? When I first heard this, I thought I was coming from a PTO driven hydraulic pump on my post pounder. It's not.

Also wondering about oil filters. My dealer didn't have any in stock, so I went to UAP/Napa. Fellow sold me a Wix filter (Napa part # 1064) that looks substantially shorter than what's on there now. In light of the H/T fluid situation, I'm not certain the right filter is on there now, so I picked up a Fram (part # PH3593A) thinking I'd like to compare the two. They don't compare well. The Wix filter is shorter, wider and heavier than the Fram, and the gasket is a little wider. Not sure where I'm at with the mounting threads, as the dfferent construction makes it difficult to assess visually. I'm not inclined to find out if either one might be a good fit until I have a filter I know will fit in hand.

Would appreciate any observations/advice. Thanks.

Art

 

[KiotiJohn]

Re: Knocking... Oil Filters... What\'s Next?

Let's try to attack each thing here. First, overfilling can cause the fluid to foam causing an inefficent use of the lubrication and can accelerate wear, but I'm not sure the noise would be coming from that. Try to isolate the location by using a mechanics stethescope, or pick up a cheap medical stethescope from any medical uniform or supply company, or you can even buy a cheap blood pressure outfit from Walmart and use the steth from that. Place the scope on different locations where you think the noise is coming from. Does the knocking occur at all times? Is it simply the knock that all diesel engines have to some extent? In the meantime, just simply let some of the fluid out by carefully loosening the transmission pan bolt. Hold it up close and let some fluid drain out a little at a time until you get the level down. As for the filters, it's not unusual for "will fits" not to be exactly as the OEM filter, so I don't like using them. Call the dealer and ask him to order your filter and have it shipped to your door. I think it's better than using something you're not sure is right. Also, if you don't have an owner's manual, get one. It will be invaluable in knowing the maintenence schedule as well as different operating instruction that may help you. I hope this is some help to you, John

 

[Egon]

Re: Knocking... Oil Filters... What\'s Next?

Does the Knocking noise happen when tractor is sitting still or when it is moving? Does it happen in a particular gear range? Does it happen if the clutch is not engaged?

Egon

 

[Jackrabbit_Slim]

Re: Knocking... Oil Filters... What\'s Next?

Thanks for the replies, fellas. This knocking is living, I believe, somewhere in the differential case. Doesn't matter what range I'm in or whether or not the clutch or PTO is engaged. Backlash? Bearing?

Art

 

[Egon]

Re: Knocking... Oil Filters... What\'s Next?

Wish I could help Art but at this point my limited knowledge is useless.

Egon

 

[TNCHRIS]

Re: Knocking... Oil Filters... What\'s Next?

if it's knocking in the rear with the clutch in then i'd say it's in the lift arms, their powered off the power steering pump. try moving the lift up or down and see if it stops. they may be out of adjustment.

 

[MadReferee]

Re: Knocking... Oil Filters... What\'s Next?

</font><font color="blue" class="small">( if it's knocking in the rear with the clutch in then i'd say it's in the lift arms, their powered off the power steering pump. )</font>

Not on the B2710 (and the B2410/B2910). The power steering and the loader/3pt have seperate hydraulic pumps with different displacements. The power steering pump for the B2710/B2910 is 3.1 gpm and the loader/3pt pump is 6.4 gpm.

 

[TNCHRIS]

Re: Knocking... Oil Filters... What\'s Next?

both pumps are on a common shaft driven by a gear off the engine thus not being disconnected by the clutch. most people will look at it and think it is one pump, yes it is two sharing a common supply and two discharges. there is a pressure relief on the rear lift arm control that may make a knocking sound if you try to lift the arms to far.
i state again the lift arms need adjusting.

 

[Moon]

Re: Knocking... Oil Filters... What\'s Next?

Another post a month er so ago mentioned a knocking, on a 2410 I believe. Another user recognized it and told him to check the lugs on the rear wheels. Sure nuff, that was it.
Maybe you could be as lucky.
Moon of Ohio