Bleed TMZ50 genie

[bull2five]

Anyone know how to change out all 8 gallons of ATF fluid and bleed system?
Thanks in advance for your help

 

[MSgtBob66]

Drain tank and crack/remove hydraulic hoses

This is for a hydraulic system? If so, drain/suck tank dry, crack/take off all your hoses and then reassemble, fill tank, run all hydraulics to get air out, top off tank. If for a transmission, disconnect hose to your cooler and run unit in neutral/park (with full, new fluid in tank) until you see change in oil color to the new fluid then shut down, reconnect hose, top off tank. Catch all fluid from disconnected hoses, 8 gallons makes a heck of a mess. Good Luck!

 

[bull2five]

This is for a hydraulic system? If so, drain/suck tank dry, crack/take off all your hoses and then reassemble, fill tank, run all hydraulics to get air out, top off tank. If for a transmission, disconnect hose to your cooler and run unit in neutral/park (with full, new fluid in tank) until you see change in oil color to the new fluid then shut down, reconnect hose, top off tank. Catch all fluid from disconnected hoses, 8 gallons makes a heck of a mess. Good Luck!

It's for the hydraulic system on the Genie TMZ-50/30.
In addition to draining the hydraulic tank, your saying I need to remove hoses. I was hoping that I could drain the system with out removing the hoses. If it is required to remove the hoses, can the hoses be disconnected at the manifold or the hoses have to be disconnected at both ends? The reason I ask is that there are quite a few hoses and would require a lot of work.
If they hoses are removed and replaced after all fluid is drained, how will fluid get forced back into the hoses once the tank is filled up? This won’t burn out the pump with no fluid in the system initially?

Thanks for your help so far.

 

[MSgtBob66]

Is this an annual service or is there contamination in the system?

I see now that this is for a lift. Is this is for an annual service and there is no contamination in the system? If there is no contamination, I would just drain the tank & refill, plus change the filter.

If you need to get all fluid out due to metal contamination (ie the pump blew out), yes, you need to disconnect hoses at both ends plus cycle the cylinders to get all fluid out AND flush the whole system component by component (including your valves) to get the metal out. Yes it's a pain and thet is why service shops get $100.00 plus per hour shop time.

I am thinking you are just servicing this thing. If you do not have an external spin on filter, you have a filter in the tank. Ensure you change any and all filters for the hydralic system.

Good Luck!

 

[bull2five]

I see now that this is for a lift. Is this is for an annual service and there is no contamination in the system? If there is no contamination, I would just drain the tank & refill, plus change the filter.

If you need to get all fluid out due to metal contamination (ie the pump blew out), yes, you need to disconnect hoses at both ends plus cycle the cylinders to get all fluid out AND flush the whole system component by component (including your valves) to get the metal out. Yes it's a pain and thet is why service shops get $100.00 plus per hour shop time.

I am thinking you are just servicing this thing. If you do not have an external spin on filter, you have a filter in the tank. Ensure you change any and all filters for the hydralic system.

Good Luck!

I just wanted to service the lift and thought I needed to get all the fluid out to do so. Now I know that I can just drain the fluid from the tank and replace the filter next to the tank. By doing this, I guess no air will get into the lines for me to bleed.:msp_biggrin:

You caught my attention with metal contamination and would like to know how you can tell if I ever run into this with my lift. Will there be small metal particles in my hydraulic tank?

Thanks for your time & knowledge.

 

[MSgtBob66]

You'll know if you have contamination...

If the pump blows, assume you have metal contamination. If you do not have it, install a magnetic drain plug on the tank so when you service, you can see if there are chunks in the fluid.

Some sludge build up is normal, that is what discolors the fluid. That being said, the filter is to pick the fines up. If you find chunks of metal in the tank, then you probably have some issues. Be aware though that if is the first service of this hydralic system, there is a good chance that you'll find some stuff in the drain oil from the manufactoring process. In a recent trans fluid change at work, I found a bunch of machining pieces in the bottom of the pan (first pan filter change). Trans works fine.

Because there are no clutches at work in your simple hydralic system, and your aplication is as a lift vice turning a motor at high speed (like on a stump grinder), your hydraulic system fluid should be clean with no to minimal wear materials in the system.

Don't overthink this thing, you drive yourself to drinking (wait while I get a fresh beer).

Good Luck!

 

[bull2five]

If the pump blows, assume you have metal contamination. If you do not have it, install a magnetic drain plug on the tank so when you service, you can see if there are chunks in the fluid.

Some sludge build up is normal, that is what discolors the fluid. That being said, the filter is to pick the fines up. If you find chunks of metal in the tank, then you probably have some issues. Be aware though that if is the first service of this hydralic system, there is a good chance that you'll find some stuff in the drain oil from the manufactoring process. In a recent trans fluid change at work, I found a bunch of machining pieces in the bottom of the pan (first pan filter change). Trans works fine.

Because there are no clutches at work in your simple hydralic system, and your aplication is as a lift vice turning a motor at high speed (like on a stump grinder), your hydraulic system fluid should be clean with no to minimal wear materials in the system.

Don't overthink this thing, you drive yourself to drinking (wait while I get a fresh beer).

Good Luck!

Thanks man.