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85 N5 stopped moving
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Joined: 01 May 2012
Location: Ohio
Points: 533 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AC 426 power Quote  Post ReplyReply Direct Link To This Post Topic: 85 N5 stopped moving
    Posted: 3 hours 24 minutes ago at 1:57pm
Got a N5 that stopped moving suddenly when unloading corn, will not go forward or reverse. When it happened, I heard a little bit of a clunk and then it stopped moving. Combine hydraulics are also slow and will only work unless revved high. I replaced all the hydraulic filters the morning after and everything was back to normal, ran corn for about a hour and then once again, I heard a slight clunk and no forward motion or reverse. Main belt coming off the engine is not broken and seems tight. Any ideas?
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Joined: 12 Sep 2009
Points: 22189 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 56 minutes ago at 4:25pm
Sounds to me like the hydraulic system isn't keeping the hydro charge pressure steady. I'd say it's time for some hydraulic pump testing with multiple gauges and for sure a charge pressure gauge from the pressure reducing valve to the hydro. This is kind of serious as you could smoke the hydro from lack of charge/lube pressure. No, I have never seen this happen before.
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Joined: 01 May 2012
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Points: 533 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AC 426 power Quote  Post ReplyReply Direct Link To This Post Posted: 44 minutes ago at 4:37pm
Originally posted by DrAllis DrAllis wrote:

Sounds to me like the hydraulic system isn't keeping the hydro charge pressure steady. I'd say it's time for some hydraulic pump testing with multiple gauges and for sure a charge pressure gauge from the pressure reducing valve to the hydro. This is kind of serious as you could smoke the hydro from lack of charge/lube pressure. No, I have never seen this happen before.
I seen that there is a strainer in the hydraulic reservoir, according to the service manual if there’s a low charge pressure issue that is one of the places to check, no I have not confirmed that it’s got low pressure yet. I’m just wondering if maybe it’s worth draining the hydraulic fluid and having a look.
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