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Old 02-03-2015, 06:20 PM
jakja jakja is offline
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Default John Deere 955 Is Slow

Hi all! New to owning a tractor and I bought a nice John Deere 955 with around 480 hours, 1992. The problem I am having is that it is very slow, around 3-5 mph and the manual says top speed should be around 11. All fluids are good, no leaks that I can see. I have it in high gear, placing it in low gear slows it to a snails pace. Maybe linkage problem? I don't know and looking for ideas before I have to pay big $ to a dealer. Thanks All
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Old 02-03-2015, 07:11 PM
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Are you familiar with this TractorData page? It says working rpm is 1400 -3425.

Are you running it within that range?
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Old 02-04-2015, 07:23 AM
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Welcome to the forum.
When you say high gear, do I assume correctly you mean 4th gear on the stick?
That tractor has 2 ranges. Sounds like you're in low range.
The picture below isn't exactly your tractor but is the best I could find for what I want to point out.
When sitting in the seat, under your right leg is a HI/LO range selector. It's the round orange knob in this pic. With tractor in neutral, lift that arm up into the HI range position. Put it in 1st gear and it should be about the same speed as what you currently get in 4th gear.
If that doesn't do it, it still sounds like it's stuck in LO range but may be something internal.

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Old 02-04-2015, 11:25 AM
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TractorData shows only a hydrostatic transmission for 955. Is there also a M/T version?
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Old 02-04-2015, 11:42 AM
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Quote:
Originally Posted by California View Post
TractorData shows only a hydrostatic transmission for 955. Is there also a M/T version?
The 55 series is the hydro. The 70 series is the M/T. What I pictured was a 70 series as I couldn't find a pic of the 55 series under the seat.

AFAIK, both have high/low range. I'd "think" the range selector for the 55 is under the seat like the 70 series.
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Old 02-04-2015, 11:50 AM
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OK, here's a 955.
Need the OP to tell us what that red knob is under your right leg when sitting on the tractor.
BTW, the weld on the range selector lever is weak (it is on my 70 series). My selector arm broke off... twice. If lifting your range selector up doesn't get you in high range, check to see if the weld has broken loose and the arm isn't doing what it should. After mine broke the 2nd time, I just put a pair of vice grips on instead and it's worked fine for the last 17 years.

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Old 02-04-2015, 11:56 AM
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From the deere parts site:
http://jdpc.deere.com/jdpc/servlet/c...ageservlet_alt

Model 955, 64 - TRANSAXLE RANGE CONTROL LEVER AND LINKAGE (HIGH-NEUTRAL-LOW)


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Old 02-04-2015, 06:29 PM
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Great input from everyone! Thanks! Not manual transmission it is hydrostatic drive so yes high gear is the knob to the right down by my feet. I know that I can move the lever to high and I get up to maybe 5mph, but like I say low is slow slow and so is high. I can look and see if the shift is engaging that may be a start. That is why I was wondering about the linkage, see nothing under the seat that will help. Keep the ideas coming!!
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Old 02-05-2015, 07:23 AM
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I'd replace the tranny fluid and filter.

A lot of hyd tranny's are finicky about the fluid. Replace with Hy-Gard and OEM filter.
https://jdparts.deere.com/partsmkt/d...nHydraulic.htm

Not sure if you need to use regular or low-viscosity fluid in your tractor but a dealer would know.
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Old 02-05-2015, 05:04 PM
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My 955 does the same thing. Took to dealership and emergency brake is sticking. Even though it is released it is still stuck on. What you can try and works most of the time is jab the brakes like you are going to release it repeatedly like dribbling a basketball. After 10-15 jabs mine releases and back up to full speed. Helps to back up a bit also after releasing.

JT in NC
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Old 02-05-2015, 06:02 PM
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Oh No! Now my muffler fell off..great! I think becoming a tractor owner could become frustrating and pricey, but that's ok I am happy with it. The guy that had bought it new kept a log book of everything he had done with it along with every service and all the receipts. I noticed one of the service comments was that it needed to be used more I think it has set a long time. So we'll keep at it until some of the issues are worked out. Oh well still happy! Keep the ideas coming!
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