IH hydraulic issue

[Big Red 454]

IH 454 gas, will a diverter valve cause hydraulic issue to the bucket? Can shut tractor off restart then gain function back. New pump ,New filter/fluid. Thank you

 

[caterpillar guy]

If you are talking about a valve with the push pull knob and a short spool the body only has 3 ports on on one side and two on the other yes it will divert oil from one circuit to the other by pushing and pulling it.

 

[Mrfred54]

Need better description of what you call a diverter valve. Are you talking about flow
divider valve of the tractor or do you have a diverter valve mounted on the tractor
elsewhere. If flow divider is sticking then you would loose steering first. Do you
have a separate loader valve or are you using the outlets on the back of tractor?

 

[Big Red 454]

(quoted from post at 03:45:28 11/03/22) Need better description of what you call a diverter valve. Are you talking about flow
divider valve of the tractor or do you have a diverter valve mounted on the tractor
elsewhere. If flow divider is sticking then you would loose steering first. Do you
have a separate loader valve or are you using the outlets on the back of tractor?

only one diverter valve, yes it controlssterring, and i am not loosing that, just bucket function at times, no separate loader valve. Just didn't know if it also controlled flow to the bucket controls.

This post was edited by Big Red 454 on 11/03/2022 at 04:34 pm.

 

[Big Red 454]

that would be pto controll separate function.

 

[Big Red 454]

The MCV , Multi Control Valve has a diverter valve byilt into it

 

[Mrfred54]

So, does your tractor have two auxiliary valves. One for the loader boom and one for
the loader bucket. If so you may have a coupler issue.

 

[Big Red 454]

(quoted from post at 03:10:39 11/04/22) So, does your tractor have two auxiliary valves. One for the loader boom and one for
the loader bucket. If so you may have a coupler issue.

It has up and down cotroll valve for the lift aand same for the bucket. Seems to loose all funtion at the same time.I just dont know what sends presure to the controll valves for the lift and bucket.

 

[Mrfred54]

A few things to check. On the bottom of the mcv the rear most plug is the relief
valve. Usually they work or pressure is way low. The next plug forward is the flow
divider valve. Make sure it is moving freely in the bore. Next thing to check is the
unloading valve/ flow control valve. It is under the seat. To remove the valves from
the block you need to remove it from the tractor. Cleanliness is very important.

 

[Big Red 454]

sounds good I will check it all ,thank you

 

[Big Red 454]

I have checked all the valves , the diverter valve moves freely in the bore but coild not get it to fall out. Took apert the loader valve parts are clean and move freely. Took apart the complets assembly nothing wrong that I can see. The presure relief valve looks ok .It still has lift and bucket function threw 2 cycles of the loader valves then has hardly no presure ,wont even lift the bucket up.shut tractor off restart gain all functions for same amount of time. If you drive tractor around will come and go . What are the sighns of a bad relief valve? Still have Pto and steering never loose either one.Thanks