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1650 that won't move
Its been a while, but I got the 1650 running again. It had an engine issue and sat for a while. Many months ago it was running and moving fine. Finally got around to getting it running again, but now it wont move. Hytran is full and looks clean, filter is unknown age, but looks new still (very little use). When I put the lever all the way 'forward, I hear a constant (with my ear by the drive-shaft) SSSSSSSSSSSSSSSSSSSSSSSt. Same thing in reverse. She just wont move. Also, since its been so long since a drove it, there is very little "resistance" on the brake pedal. It does put the lever to neutral though.
I search, but was unable to decipher exactly where to start so as to diagnose it....... |
Check the relief valves first. If they are the manual ones, they are probably stuck down.
AJ |
I jacked up the rear,ran it, moved lever,,wheeels would not turn on their own..but did turn smooth by hand...
I unscrewed relief valves and ran it..i can see fluid way down at the bottom, but not towards the top..don't know where it should be (again fluid in rear is fine...ran it and tried to move wheels and front hydro lever...nothing.... After it ran for a long time..I could every now and then see a bubble or two coming out of the porous stone vent on the top of the rearend... here is a video.... http://i154.photobucket.com/albums/s...0811-00000.jpg Yes fan is missing..it isn't cooked, as it worked fine when parked... |
Maybe the charge pump took a crap :bigthink:
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You may want to contact Earl J he has a pump for sale, look in the Flea Bay section.
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:bigthink:
Is the Input Shaft to the Hydro Unit turning....??? :Huh: |
Roland you can see the pump shaft turning in his video.
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looks like the shaft from the motor is spinning in that picture. Does that pump shaft have splines like the newer ones?
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Ah....I see, you are suppose to click on the image, and it takes you to a Photobucket Video.
Not having any luck viewing that video....I hear the audio but no video. |
There is a Spirol Pin on the Coupler that attaches to the Input Shaft. If that pin breaks, one will have NO hydro function.....BTDT.
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Ill have to go back and see the video, but if look at that image where the visible springs are, you will see that your Trunnion is about worn out, i.e. one of the two plates that contain the springs. It may not be a direct influence on your issue but it will help you acheive a drive out of your 1650
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Ok something to check on. Bedell, where is this pin you are referring to is there a good pump diagram somewhere so I can see things better (I'm a newb) it that pin broke, would the shaft in the rear of the hydro still spin as it does in the video?
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Also where is the charge pump, how do I test it, and how do you prime the pump? Thanks
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Did you move the tractor while it was broke down? You can tow these things but you need to go slow and not for long distances. If you moved it and went too fast, you could have severely damaged the pump. It's the only surefire way to destroy one of these things. From what I'm seeing, it looks like the most likely culprit.
AJ |
It was only pushed a total of about 40 slowly by hand and not all at once. When u say destroyed are you refering to the transaxle or the pump in regards to being towed?
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Ok. So it seems the pump is shot. What is the noise that is being made when the lever is all the way up or down(see vid)
What model is the pump, are they rebuildable, and is there a manual? Also what other cubs had the same pump. Thanks so much for the help |
Would be rare the pump died from sitting - the relief valves are stuck not letting the pump build up to pressure or the filter has blocked the fluid return. Find both known good valves to try and replace filter Wix 51410
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Do some pressure testing to find out what is going on.
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Does you lift work?
If not than your issue is in the charge pump area, no oil or filter blockage. The charge pump is right behind the Rag Joint on the drive shaft. Its held to the trans by 2 bolts. If you remove it make sure you mark the cover to the block it has to go on the same way other wise it will not work. You can also check the pump by removing the allen head screw between the relief valves, this is a test port for the pump. If you have a pressure gage that you can thread in to this port you would get 70-150 psi in neutral, 500-650 psi under load. If you don't have a gage you can hook a hose up and see if any thing comes out into a jug with some force. If your lift is working chance are the charge pump is in good shape. There is a regulator valve that controls the oil from the charge pump to the main pump of the trans. Its rare for this an issue but its the last thing before declaring the trans is shot. This valve is located on the right side of the trans (as you sit on the tractor) and right behind the right bolt that holds the charge pump on. It larger than a 9/16 bolt head. Not much to it just a spring and a ball again rare it would fail. |
1 Attachment(s)
As found in the Service Manual....
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Thank Roland!
There is also a section in the manual that shows the charge pump removal. http://ccmanuals.info/pdf/1x8-9%20&%...e%20Manual.pdf I notice in the library that I did not see the service manual specific to the hydro, did I miss it? |
1650 won.t move
looking at the photo ,i see the spring has worn groves in the plate ,that will need to be welded up and refited it will cause more problems later
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in the manual it also states that the draw/cooling tube should be filled if you drained the fluid and refilled. its a chance that the pump isnt priming then. i shoved a flexible hose in mine with a large syringe attached to fill the tube as much as possible.
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