610 Tilt Valve Leaking

[Beekeeper]

While rebuilding my 610 I have noticed that the spool on the tilt valve is leaking. I clean it off with brake cleaner and the next morning the area around the spool is showing signs of hydraulic fluid. I would conclude that it is probably much worse during operation and hydraulic pressure. Is this component easily rebuilt or should I take it to a hydraulic shop? Beekeeper

 

[6brnorma]

I am certainly no hydraulics expert so this is 100% opinion…….that valve is the most miserable sucker on a 610 to get to. When I'm that deep into a M-610 and I have any suspicion there is anything wrong with it…….it's coming out and I have a good hydraulics shop go over it. I don't want to do it after the engine is back in the machine. JMHO

 

[Beekeeper]

I am certainly no hydraulics expert so this is 100% opinion…….that valve is the most miserable sucker on a 610 to get to. When I'm that deep into a M-610 and I have any suspicion there is anything wrong with it…….it's coming out and I have a good hydraulics shop go over it. I don't want to do it after the engine is back in the machine. JMHO

As you suspected I am deep into the 610. Yes, it is in a miserable location and almost impossible to access. Everything is pretty much out except the Jackplate, which makes it easier to find problems like this. I will pull it out and get it to a hydraulic shop for testing and or repair. I did get the engine over to a shop for rebuild, will be looking for all new skins and a few other parts as I go along. Thanks, Beek

 

[6brnorma]

As you suspected I am deep into the 610. Yes, it is in a miserable location and almost impossible to access. Everything is pretty much out except the Jackplate, which makes it easier to find problems like this. I will pull it out and get it to a hydraulic shop for testing and or repair. I did get the engine over to a shop for rebuild, will be looking for all new skins and a few other parts as I go along. Thanks, Beek

While you are down there……..replace every piece of 'hose' with hydraulic grade hose (not plain old hose). Also….look in your parts manual, page C2, part #14. It is a short piece of high pressure hydraulic line….it lies directly under the 'variable speed sheave' when the engine is in place….you probably have it laying out right now. Make double sure that part is in good condition before you replace the engine……it is cheap to replace but a nightmare to install with the engine in….when it breaks you lose all hydraulic oil in about 20 seconds.

 

[Beekeeper]

While you are down there……..replace every piece of 'hose' with hydraulic grade hose (not plain old hose). Also….look in your parts manual, page C2, part #14. It is a short piece of high pressure hydraulic line….it lies directly under the 'variable speed sheave' when the engine is in place….you probably have it laying out right now. Make double sure that part is in good condition before you replace the engine……it is cheap to replace but a nightmare to install with the engine in….when it breaks you lose all hydraulic oil in about 20 seconds.

I am making all new hydraulic hoses, most will be made of stainless braded high pressure hoses. This is probable not necessary, but will provide years of worthy protection. I am planning to remove all axles and check all bearings and replace all seals. After all this is completed I will attack you he mast and 5th wheel. Hopefully ready for the bee yards in the fall, just in time for pepper. Beek