CC 7360SS Possible Hyd Issue

   / CC 7360SS Possible Hyd Issue #1  

dumbfarmboy

New member
Joined
Mar 6, 2017
Messages
18
Location
Bangs, Tx
Tractor
Yanmar 336D
Finally after a complete engine rebuild with OS pistons it runs. Loader has been used some but after using tiller, the engine appeared to be locked up or really tight. This was the first time TP and PTO have been used. Nothing was done to the trans or rear drive. Thought it was starter or battery as it would turn slow for a very short time, maybe one rev. Both of those were eliminated. Pulled injectors thinking blown HG or leaking coolant, no go there either. Depressed and latched clutch and disconnected tiller from PTO it turned little easier but stopped. After cussing and discussing splitting the case because you can't drop the oil pan otherwise (nice design Mitsu/CC) I had the thought that possibly some thing was blocking hydraulic flow and loading the engine. We cracked open the pressure lines on both pumps, very little fluid came out, but when the key was turned it spun over easy. Put injectors back and started bleeding and it actually started and ran normal. TP was cycled a few times and then it stopped running again. Now it's locked up again. Plans now are to pull the smaller pump since it's shaft appears to drive the big one and see what happens. Other suggestions welcome.

TIA,
 

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