Kubota B6100 oil pressure light coming on

[Brooke Boy]

Hi there,
I have a Kubota B6100HST that I use mainly for cutting grass with a belly mower. Last fall, the last couple of times I cut the grass the low oil pressure light came on after it had been working for a while (1/2 hour or so). Not sure what the problem may be. Anyone have any suggestions?:newhere:

 

[Soundguy]

1, check oil level.

2, any ime an IDIOT lamp for oil presure tells me something, I immediately pull the sender and plumb in a manual gauge so I can actually SEE what the oil pressure is doing.

an oil sender for a lamp is simply a pressure switch.. many of the common ones open at 6 psi.. that's not very comforting.. ie.. if it's comeing on, and is correct.. you might have 5-6 psi oil pressure.. and IMHO.. 6 psi per 1000 rpm is bar bone minimun to not detonate the engine. of course.. the sender could be going out and not accurate.. thus the check with a mechanical gauge.

post back yer results.. or.. if gauge says oil pressure is fine.. get a new sender... ps.. sender if a 1 wire job is just a grounding swich.. so make sure the wire running from sender to lamp is not chaffed and rubbing on the block making the lamp flash.

soundguy

 

[KubotaSam]

If after you test the true oil pressure with a mechanical gauge as Soundguy suggests you really do have low oil pressure, one common problem on some older Kubotas is losing a plug from the end of the camshaft. Check the last post from this thread for info.

http://www.tractorbynet.com/forums/kubota-owning-operating/24459-b7100-oil-pressure-relief-valve.html

 

[BotaBigot]

First thought is sender as Soundguy suggests. Didn't give hours...so possibly high-hour engine where increased bearing/oil pump tolerences "leaking" pressure at low rpm. Sometimes heavier weight oil can buy more time...

 

[Brooke Boy]

Thanks guys, hopefully have time to do a little troubleshooting on it today.

 

[Soundguy]

let us know...

 

[Brooke Boy]

Hi guys, sorry its been so long. I got a mechanical gauge and everything ended up being good, just a bad sensor. Now I've sold the Kubota B6100 and got a Cub Cadet 1872 with a 54" deck. So far so good, got a few bugs to work out though. Thanks for all the good suggestions.:thumbsup:

 

[Soundguy]

glad swapping the sender for a gauge helped. it's what i always do.. seeing real oil pressure vs a lamp or no lamp is always dicey..