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I have a problem with no forward or reverse and slow movement with the Hyd pressure

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Without knowing what you are working on, I would first say, make sure the oil is at the proper level, then change the filters. You might have a bad hydraulic pump.

Posted on Jan 02, 2015

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Posted on Jan 02, 2017

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SOURCE: no forward drive. hyd.ok, reverse ok.

check the linkage as the same pump and hydro motor drives both directions

Posted on Sep 02, 2012

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SOURCE: John deere sabre 2354 hv moves slow forward, even slower in reverse

this hydrostat drive tractor is designed to max at 5.5 mph forward, 2.5 in reverse, check linkage at pedal if you dont think your achieving those speeds

Posted on Mar 23, 2013

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7FGCU45BCS TOYATO FORK WHY ARE LIFT CYLINDERS SLOW PUT NEW HYD. PUMP AN CONTROL VALVE ON ALSO CHANGED FLUID AND FILTERS COULD THERE BE AIR IN SYSTEM?


air bleeds out with the piston movement so with the piston movement air is put in and then is evacuated as the piston come back down. an indication of air is a jerking motion of the rams as pressure is built up and the ram moves which lowers the pressure until it gets up again. I would be having the pressure relief valve on the pump checked for correct setting. I would also be having the hydraulic hoses checked as they have been known to fail internally and block of the oil flow.

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1986 530 international loarder


Did you check oil level in hyd resivor it might be low also check fuses.

Nov 19, 2013 | Motorcycles

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My Husqvarna Rider 16c wont reverse - first it was slow in reverse then not at all


You need to check the cable, it is a push pull telescopic style so it is possible to get forward and no reverse, if it was a hydro problem you would not get forward or reverse, there is also timing gears on the forward and reverse pedal, you nee to make sure they have not jumped a tooth as this would reduce movement on the cable at the hydro

Feb 12, 2013 | Husqvarna Garden

1 Answer

No forward drive. hyd.ok, reverse ok.


check the linkage as the same pump and hydro motor drives both directions

Sep 01, 2012 | John Deere 300 / 316 Hydrostatic Tractors...

1 Answer

My 2000 dodge caravan won't reverse, how much would that cost, and what is wrong with it?


There are pressure ports on the side of the 4 speed under the solenoid pack. These are 1/16 pipe thread, with a gauge you could check each one.

From the engine towards the transfer gear cover they are:

Underdrive
Overdrive
Reverse
Lock Up Release
2nd & 4th
Low & Reverse

These ports are connected very close to the clutches, so a bad seal will show up as low pressure. in reverse, look for at least 145 psi in Reverse and the Low & Reverse ports at the same time.
If pressures are good here, you likely have a broken ring gear on the rear planet. This will fail and will still have forward gears as the ring is not used during forward movement.
Good luck, i hope this helps.

Jul 06, 2011 | Dodge Caravan Cars & Trucks

1 Answer

I have a 2004 avalanche 4x4 tht will not go into drive but I have reverse. it did this while i was stuck in snow trying to rock it out


No movement in any gear: pump failure, or total loss of fluid. R&R, or refill pan and find the leak. If out of fluid, avoid running the engine until the trans is refilled to avoid pump damage. To check for pump failure, check fluid level with the engine off, then start the engine and recheck fluid level. If level does not go down when engine is running, the pump is broken.

No forward movement in OD or D, but L2, L1 and R work: Forward sprag is broken. R&R. Try not to run or drive the car or further damage could result.

Put a line pressure gauge ($55 shipped on Ebay, or visit a local trans shop) on the pressure test port and go for a drive to verify proper line pressure. Base pressure at idle in P,N,OD should be around 70psi and around 140psi in R. Max line pressure should be at least 190psi at WOT in 1st or 2nd, 225psi is optimum. If base pressure is low, trans or pump is worn out. If max pressure is low, check EPC solenoid. If reverse is slow to engage, and line pressure does not come up to at least 130psi in reverse, replace the boost valve with a Transgo 0.500" boost valve (easy fix in pan).

Good luck and try pulling the ECM and transmission fuse out with the ignition key in the on position, "engine not running" and placing it back in after 10 seconds and start the engine. If it's a PCM problem, this will reset it.


Dec 25, 2009 | 2001 Chevrolet Silverado 1500

1 Answer

Hyd controls get hard after machine has run ten


You got a pressure crossover problem there , main pump pressure is leaking into the servo system I would suspect the pump.

Apr 10, 2009 | Garden

1 Answer

John Deere L120 transmission high pitch noise and no forward move


Try jacking the unit up. Start it up and try moving pushing the forward and reverse back and forth and see if it does it then. It sounds like an oil way in the hydrostatic unit has a check valve stuck. Of course make sure that the fluid lever is up. Hope this will help you. donnyb60

Mar 23, 2009 | Garden

2 Answers

Power problem


throttle pot or loose hex nut that holds the actual forward and reverse paddle, may be slipping

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