John Deere 6410 won't move

[wiam]

2000 6410 powrquad 24 speed. Round baled with it 2 weeks ago. Everything was fine. Last week I went to use it and it will not move. Low trans pressure ligh and stop light flash when engine is running. PTO does not come on. Test light comes on at solenoids on transmission. 8.5-11 ohms on solenoids. Screw driver sticks to each solenoid when activated. I can hear solenoids moving valves with a stethoscope. Gauge does not move in any gear at test ports on bottom. Remotes will open round baler. 3 point goes up and down. Brakes and steering have pressure. Seems like there is no tranny pressure. I got tractor 2 months ago. I have changed filter by rear axle but not front one yet.

 

[Zebrafive]

1) Check fluid level
2) Replace trans filter part number AL156625
3) If 1 & 2 do not help it might have the lube relief valve stuck open, or failed trans pump

There is a procedure for flushing the lube relief valve in Tech manual TM4572. Section 255-10A-55. Page number 990

 

[wiam]

That would be your choice for manual? How about TM4574? I have the TM 4524 coming today. I am not sure which has best info

 

[Tx Jim]

TM4524 is for model 6400 while TM4572 is for model 6410

 

[Zebrafive]

That would be your choice for manual? How about TM4574? I have the TM 4524 coming today. I am not sure which has best info

TM4572 is operations and tests. It tell how it works and how to test
Tm4574 is repair. It tell how to repair (if you know what needs to be repaired) not how to determine if it needs repair for that TM4572

I would say you need both. If only one TM4572

 

[Tx Jim]

Ditto what Zebrafive stated.

 

[wiam]

New filter did not change anything.

 

[Zebrafive]

My next guess is stuck lube relief valve

 

[beenthere]

"lube relief valve"

What is that? Don't recall hearing a valve called that, and would like to hear more what it is and where it is located in the thick of things. tks

 

[Zebrafive]

"lube relief valve"

What is that? Don't recall hearing a valve called that, and would like to hear more what it is and where it is located in the thick of things. tks

The power quad transmission has it's own oil pump. It supplies pressure for planetary clutch packs and reverse brake. It also lubes the transmission. This relief valve is to protect the pump and is located in the transmission front valve housing. There are also a filter relief valve, and cooler relief valve.

JDparts is down so I could not pull up a drawing.

 

[wiam]

The power quad transmission has it's own oil pump. It supplies pressure for planetary clutch packs and reverse brake. It also lubes the transmission. This relief valve is to protect the pump and is located in the transmission front valve housing. There are also a filter relief valve, and cooler relief valve.

JDparts is down so I could not pull up a drawing.

Does this pump also supply oil to PTO clutch?

 

[wiam]

TM4524 is for model 6400 while TM4572 is for model 6410

TM4524 is diagnostics for 6000 series.

 

[Zebrafive]

Does this pump also supply oil to PTO clutch?

Yes, low system pressure (light ON) from trans pump and PTO will not operate.
At the right rear of the tractor is the PTO valve. It will have test ports marked BRAKE and CLUTCH. System pressure should be 170psi at 1000 engine rpm.

 

[Zebrafive]

The power quad transmission has it's own oil pump. It supplies pressure for planetary clutch packs and reverse brake. It also lubes the transmission. This relief valve is to protect the pump and is located in the transmission front valve housing. There are also a filter relief valve, and cooler relief valve.

JDparts is down so I could not pull up a drawing.

JDparts is up now. In the drawing Key #30 is the filter relief valve, Key #35 is the lube relief valve, and key #36 is the cooler relief valve.

 

[beenthere]

So thanks for the info on these relief valves.

There is a procedure for flushing the lube relief valve in Tech manual TM4572. Section 255-10A-55. Page number 990

Looks like this is the next plan for the OP to follow.

 

[wiam]

Ordered 2 manuals on CD today. Dealer said it could take a week.

 

[Industrial Toys]

Having just bought a power quad, I am curious what the Reverse Brake is?

 

[Zebrafive]

Having just bought a power quad, I am curious what the Reverse Brake is?

The short answer; Used to reverse power flow thru the transmission by "braking" a gear"

The long answer

There is a ring gear (teeth on ID) that the reverse brake "locks" to the transmission case. There are outer planet gears that mesh to the ring gear and inner planet gears. The inner planet gears mesh with the output shaft. As the planet case rotates the outer planet gears have to turn the opposite direction since they are meshed to the "braked" ring gear. They drive the inner planetary gears, which drive the output shaft in a reverse direction of the input direction.

 

[Mistyridgefarm]

Zebrafive, thanks for providing both a short and long answer! I think I just learned something today.

 

[wiam]

1) Check fluid level
2) Replace trans filter part number AL156625
3) If 1 & 2 do not help it might have the lube relief valve stuck open, or failed trans pump

There is a procedure for flushing the lube relief valve in Tech manual TM4572. Section 255-10A-55. Page number 990

Got the CDs yesterday. Wish there were pictures on where to hook hose ends.