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Testing!

smittysrepair

smittysrepair

Well-Known Member
Joined
Dec 25, 2010
Messages
88
Location
Grimsley Tn.
Occupation
Technical Specialist
Nice truck. I have a guy that lives pretty close to me with one almost identical to that one except that his does not have the dump bed. I do think his has the same colors though.
 
M

Mopar Todd

Member
Joined
Feb 5, 2011
Messages
14
Location
Puget Sound ( Off the Washington coast)
Occupation
Mobile fabrication and repair
I'm not sure what protocol is here for starting a new thread, but I seem to be in the same boat as many other new members here. I'm working on an EX 100 - 5E. The owner called me out because the machine had boom issues. He would release the joystick and the boom would continue to raise. Long story short, after all pilot issues were found to be normal I opened up the boom valve section to find a bad spool and badly scarred sleeve. I pulled the valve stack and sent it out to be re-worked. The sleeve was oversized and a new larger spool was chromed and ground to fit. I have it all back together and the boom, along with all other functions work great . . . . . except the swing brake. Swing either way and stop on a hillside of any type and the boom heads whatever direction gravity wants it to. Push the pilot lever forward and the brake sets. There is a square cartridge manifold mounted to the side of the swing motor which I assume to be the control valves for the brake. There are two pilot hoses coming from the top of this manifold. One goes to a port in the end of the valve stack, the other to a solenoid valve mounted adjacent to the valve stack. I tee'd a gauge into each of those two lines and found that the line coming from the valve stack has full pilot pressure whenever the pilot lever is accuated. Is this right? It seems I should only see pilot pressure there when the swing valve is shifted. Any chance a plug was left out somewhere inside the valve stack when the work was done? I have years of hydraulic experience but this is a machine I'm not that familiar with . . . it's gray market . . . and I don't have a manual. Any help would sure be appreciated.
 
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