Jinma Power Steering, use somebody ATF Oil?

[Nuno]

Hey,

i will change my Fluid in the Power Steering and i am pleased to know if somebody use ATF Oil for the Power Steering,
if there be any doubt to use ATF and the best way to drain the Air out of the System after changing the Fluid

 

[greg_g]

Most small Jinmas here in North America are the one-pump version, where the steering circuit is is fed by fluid diverted from the sump under the operator seat. But if yours is the two pump version, it will have a 2nd pump and small (~2l) reservoir under the hood that is dedicated to steering only.

But in either case, ATF is not recommended as it can be harmful to Chinese gaskets/seals/hoses. Assuming you use ISO32 hydraulic fluid in the main sump, it's OK to use it in the steering as well.

//greg//

 

[Nuno]

Most small Jinmas here in North America are the one-pump version, where the steering circuit is is fed by fluid diverted from the sump under the operator seat. But if yours is the two pump version, it will have a 2nd pump and small (~2l) reservoir under the hood that is dedicated to steering only.

But in either case, ATF is not recommended as it can be harmful to Chinese gaskets/seals/hoses. Assuming you use ISO32 hydraulic fluid in the main sump, it's OK to use it in the steering as well.

//greg//

Hey Greg,


thank you for reply and the infos,

yes i have the 2 Pump Set Up on my Jinma.
I use an UTTO Oil, this is the same what you call UTF in America because my Jinma Model has an common Sump for Transmission and Hydraulic.

i have the same oil in the Power Steering but i have had a few problems last Winter caused by the oil thickness at low temps.
Don't know how the Steering works if i use straight hydraulic oil like the iso32,
and if it is an big difference to the UTTO/UTF Oil.

ok, but if the ATF Oil can be harmful to the Chinese Seals etc. so i don't need to spend time thinking about to change to ATF and must look for an alternative

 

[Diamondpilot]

Since you have a seperate pump and sump for the power steering I would just take off all the hoses and drain. To get it out of the steering cylinder the best thing to do is take the weight off the front tires and with the hoses off move the wheels side to side by hand to remove the reaming fluid.

As for fluid suggestion I would try a light weight hydraulic oil if the cold weather seems to be a issue.

Chris

 

[greg_g]

my Jinma Model has an common Sump for Transmission and Hydraulic.

Interesting. Never heard of a common sump Jinma 200 series before. That casts a small shadow on my statement that ATF is not good for Chinese tractors. That said, I assume you're asking here because there's no guidance to be found in the tractor operations & maintenance manual. Short of that - and since there's a separate pump and reservoir for the steering - it should be perfectly acceptable to use ISO32 hydraulic fluid for the steering circuit.

//greg//

 

[Nuno]

Hey Chris,

thank you for the advice,
yes this is the way i was also thinking to do the fluid change of the Steering System but i am not sure when i refill the system if this will by it self blew out the air or if i have to do something to get the air out of the System.

when i get the Tractor (crated) i change all the fluids but the steering i have only drain the steering Cylinder and the Oil Reservoir in Front of the Radiator.
i have not drain the whole system so i doesn't know if the Pump and the Steering unit will blew out the Air by itself.

Hey Greg,

don't know if the 300 European Jinma Series have also an Common Sump System but it looks like all 244E Jinmas have the common sump.
This is nothing more than a hole in the Bottom of the Lifter Box with an Overflow pipe that let flow the Hydraulic fluid into the Transmission Box and the Hydraulic Suction Line is connected to the side wall of the Trans Box near the bottom.
In my opinion this have a lot of pros and contras
the first contra is, if you doesn't know that it is an common sump system you will fill the lifter Box and wonder why it doesn't will fill up until you take notice that the Transmission Box is completely flooded

about the Manual and the recommendation for the indicated oil
the Manual shows only a Diesel Engine Oil for all (Engine, Gear, Hydraulic, Injector Pump) depending the temperature they recommend an 20, 30 or 40 Oil, i think they mean Engine oil with an Viscosity of SAE20, SAE30 or SAE40

ok, i will try the ISO32 Hydraulic Fluid in the Steering system and if this oil will be not the right one i can change it to an lighter one in the next winter.

 

[greg_g]

ok, i will try the ISO32 Hydraulic Fluid in the Steering system and if this oil will be not the right one i can change it to an lighter one in the next winter.

You won't need a lighter oil. ISO32 has a viscosity equivalency of SAE 10W engine oil.

The Chinese apparently still don't embrace the multi-viscosity concept, as is evident in the lubricants recommended in the manuals. Here in North America, most Chinese tractor owners go with SAE 15W40 for engine oil. And since self-oiling injection pumps are rare on Chinese tractors imported into North America, the majority of us use either 15W40engine oil or ISO100 compressor oil for the injection pump.

Your steering system should be vented through the reservoir cover, which makes it naturally self-bleeding and self-priming.

//greg//

 

[Nuno]

You won't need a lighter oil. ISO32 has a viscosity equivalency of SAE 10W engine oil.

The Chinese apparently still don't embrace the multi-viscosity concept, as is evident in the lubricants recommended in the manuals. Here in North America, most Chinese tractor owners go with SAE 15W40 for engine oil. And since self-oiling injection pumps are rare on Chinese tractors imported into North America, the majority of us use either 15W40engine oil or ISO100 compressor oil for the injection pump.

Your steering system should be vented through the reservoir cover, which makes it naturally self-bleeding and self-priming.

//greg//

Thank you Greg,

me and the Jinma Owners i know over here in Germany use also 15W40 Engine Oil for both (Engine & Injection Pump)

ok, about the Steering, i know that it will be helpful after changing the fluid to lift the Front and after refill the System to turn the Steering the completely way to the left and to the right to bleed out the air but i was not sure if this works also on the Chinese Stuff because sometimes the Chinese Technology works a little bit different
thats the reason why i be a little bit concerned before

 

[greg_g]

i was not sure if this works also on the Chinese Stuff because sometimes the Chinese Technology works a little bit different
thats the reason why i be a little bit concerned

Again, I can only advise regarding North American machines. But our steering cylinders in this case can in fact be quite effectively purged of old fluid as Chris described. I see little reason to suspect that steering hydraulics on Euro machines would be any different

//greg//

 

[Diamondpilot]

I think you are on the right track for purging air. Just cycle the steering and watch the fluid level. I am sure you will have to top it off as it burps the air out.

Chris