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Discussion Starter · #1 ·
Hey all... 1420 without a mudhog... suddenly this year comes out of the toolshed with lack of ground speed... I usually run between 4 and 4.3 MPH in corn depending on how my rotor sounds like it is handling it... Suddenly without the seperator even engaged and on level ground, I can only get 3.8 MPH out of it in second. Road gear also slow... Reverse a little sluggish, but seems much better than forward gears... fluid levels all good, please tell me hydro is not failing.... even though it is slow, it still pulls the hill coming up onto the road like a champ, maybe a slight loss but not like a hydrostat going out... Can anyone offer any theories or ways to check? We were half an hour away from being ready to go today (would run as fast as we were going to cut beans anyhow), and then we got two inches of rain about 8 hours earlier than forecast.
 

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Ok, I know this is a dumb question, but is the engine rpms at the proper speed? Does the engine slow down when you push the stick forward? Otherwise is the stick travel the same as last year? Rodents and stuff can build pretty solid nexts that can limit control travel is why I ask.
 

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This may or may not be your problem....check the fork and lever attached to the hydro. At the hydro end of the control cable is a steel fork which moves the lever attached to the hydro. Both the lever and the fork wear with time and need to be rebuilt or replaced. This usually causes a decrease in speed over time so I'm not to sure about your issue. This would explain why reverse is still good because the reverse side of the fork and lever don't see the the same use.. let know what you find. I will also mention that my experience is many with the 1600's but i believe the 14 is the same
 

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Discussion Starter · #4 ·
The control travel is the same, and the throttle is wide open.... engine RPM's pull down just about identical as they always have from what I remember from last year... everything sounds right... Heck of an idea on the fork... never thought about that... but if it is worn (and I'm sure it is at least to some extent...) then it's not seeing the same % of travel as the hand lever would cause you to believe... I will be checking that in the morning.. I'll let you know what I find out... here's hoping!
 

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Discussion Starter · #5 ·
Harvest04**** Great tip there!! Took the flange where the lever rides in off, sure enough it was worn about an 8th of an inch in the forward direction, built it back up with a weld and filed it smooth... reinstalled... now she's running faster than the book says it does!! Thanks a million! This afternoon we're going to try reconnecting the mud hog... all along we thought we had mudhog valve problems, I believe now we'll be 100%.. here's hoping!
 

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Had the same thing on my 1440 this year 1/8 on fork 1/8 on lever. 1/4 overall thats a lot of wear picked up a 1.5 mph in 2nd gear. Went from 13 mph to 16 mph in 3rd.
 

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Discussion Starter · #8 ·
Almost there.... but not quite...

Now we're back normal on the speed as long as the mudhog is completely isolated from the machine, once we hooked the hog back up, with it on, everything is just as it should be, travel speed is slower as it should be, and rear wheels are pulling. The problem now lies in the mudhog itself... when you switch it off... we get some of the power and speed back to the drive wheels, but not anywhere near what we should. With the whole thing unhooked, I can run 7.8 MPH in 2nd. With the hog hooked back up, and turned off, I can only get about 4.2 out of it (3.5 while it's on, which is about right.) NO power either.. barely climbs the small grade coming out of the shop. Somehow, fluid is still flowing in some percentage through the hog, but I can't figure out where... Swapped solenoids and solenoid valve from our old unit, no change. Contacted Tuthill (MudHog) this morning for a copy of a detailed print or schematic, haven't heard back yet..
 
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