HYD REVERSER ON 350B

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Donald erwin
40C crawler
40C crawler
Posts: 12
Joined: Tue Feb 01, 2011 10:43 am
Location: texas

HYD REVERSER ON 350B

Post by Donald erwin » Mon Feb 07, 2011 5:39 pm

I HAVE WITH THE REVERSER IT IS SLOW TO ENGAGE IN EITHER FORWARD OR
REVERSE CHECKED THE PRESSURE AT THE MANIFOLD ON THE SIDE AND HAD
LESS THAN 10 LBS OF PRESSURE IS IT THE PUMP THAT IS OUT
sisize]

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digitup2
350 crawler
350 crawler
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Joined: Tue Feb 05, 2008 6:36 pm

Post by digitup2 » Mon Feb 07, 2011 6:36 pm

It could be a real toss up as it could also be the seals on the clutch pack shaft or the seals on the clutch pack piston . Deere built the piston housing out of aluminum and use a o ring seal.I would bet my time and money on the clutch pack piston seal as when one seal goes the whole unit works wrong.Digitup.

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digitup2
350 crawler
350 crawler
Posts: 858
Joined: Tue Feb 05, 2008 6:36 pm

Post by digitup2 » Tue Feb 08, 2011 9:23 am

Finally back at my better computer .If you have been running the 350 for any length of time with that low of oil pressure to the clutch pack it should be rebuilt anyway as you need to have 120 lbs pressure at least or the clutch plates will warp I find Deere's steel plates warp faster than most but overall the clutch pack is better built .Digitup.

Donald erwin
40C crawler
40C crawler
Posts: 12
Joined: Tue Feb 01, 2011 10:43 am
Location: texas

hyd reverser

Post by Donald erwin » Wed Feb 09, 2011 9:48 am

THANKS FOR THE INFO I HAVE BEEN TALKING WITH MY LOCAL JD REP
AND THEY SAME TO THINK THAT IT IS THE ACCUMALATOR AND RELIEF VALVE
ONCE I GET THUR THIS ICE TODAY PROBALBLY PULL OFF BOTH OF THESE ITEMS AND REBUILD THEM THANKS AGAIN DIGITUP IHAD THIS LITTLE CRAWLER FOR ABOUT 19 YEARS NOW PUSHED LOTS OF BRUSH WITH IT .

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digitup2
350 crawler
350 crawler
Posts: 858
Joined: Tue Feb 05, 2008 6:36 pm

Post by digitup2 » Wed Feb 09, 2011 4:10 pm

The accumulator won't even take in oil at less then 25 lbs and 10lbs pressure is a lot less than the relief valve would ever open for so unless the valve is stuck open free flowing then your repair man is in left field .Check the valve fine but after start heading for the clutch packs .Digitup.

Donald erwin
40C crawler
40C crawler
Posts: 12
Joined: Tue Feb 01, 2011 10:43 am
Location: texas

reverser

Post by Donald erwin » Fri Feb 11, 2011 10:57 am

HEY FOUND THIS OUT WHEN THE CRAWLER IS MOVING IT HOLD ABOUT 25 TO 30 LBS OF PRESSURE WOULD THIS STILL INDICATE PROBLEM WITH THE CLUTCH PACKS?

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digitup2
350 crawler
350 crawler
Posts: 858
Joined: Tue Feb 05, 2008 6:36 pm

Post by digitup2 » Fri Feb 11, 2011 4:10 pm

You still need a lot more than that for an operating pressure when you even move the crawler around you are damaging the plates with that little pressure as the clutch pack is slipping at that point and just warming up oil so watch it you need well into the 100 plus pounds of pressure or the friction plates are just slipping like crazy add a little work to the picture and you are just tearing the clutch pack up so get the pressure up and taking it apart and rebuilding the clutch pack is the best way to start .Digitup.

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