mc-1 trim ram question

[ziggy]

well, i put my drive back on today. went on easy as pie 1st try. couldn't ask for any more.

only thing i found odd was the trim rams.
pretty sure i left them fully retracted at winterization. maybe gave it a little bump off full in and then left it. over the winter both rams extended. by themselves. port one about an inch. starboard one maybe two inches. round abouts.
initially i tried to bring them both in to no avail. then tried extending them but they continued to be extended different lengths. never did go to full out though. anyways, after i put the drive on and got down to hookin up the rams. i was eventually able to get them the same length and get the pin through. ran it through a cylcle or two up full out, full in. never did get full in. they were maybe and inch out yet. then had the sweety operate the switch in while i stood on the drive. that got'em to retract. ran it another 3 or so time, full out, full in w/o issue.

so my question is what caused this to occur. the rams extending out over the winter, unevenly even. is this something that's gonna come to haunt me?

my speculation is internal resistance from having left them slightly out as for the reason they'd not fully retract. but they did extended by themselves. other option i suppose that could be is air in the system? didn't check the oil today but did the other day. looked like fresh motor oil. which is what i put in there.

any words of wisdom.

 

[balzer_brett]

Re: mc-1 trim ram question

unfortunatly i dont have a answer to your question... but it seems u have the same drive i do. i was wonderin does yours have 5 plugs for filling? i am wondering if u could guide me on filling it?

 

[havasuboatman]

Re: mc-1 trim ram question

unfortunatly i dont have a answer to your question... but it seems u have the same drive i do. i was wonderin does yours have 5 plugs for filling? i am wondering if u could guide me on filling it?

I answered your post on your post.

 

[JustJason]

Re: mc-1 trim ram question

Ziggy if this problem is in your 75 Aristorcraft in your sig I would just attribute it to old rams(old interal seals) old pump with and old shuttle valve. I wouldn't worry to much about it unless the trim system really starts giving you trouble.

 

[Bondo]

Re: mc-1 trim ram question

Ayuh,... I wouldn't worry about it either...
It's a somewhat balanced hyd. system, in that when completely hooked up,..
It's balanced...
When unhooked, it can shift to unbalanced, like it did to you...
Reorienting the ends of the rams brought it back into balance..
Without the drive holding the rams In-place, they just settled abit over time...

 

[ziggy]

Re: mc-1 trim ram question

thanks for the comments guys. i'll try and put this out of my mind and move on to the next step. which is see if it runs.

jj. are you saying my machinery may be old and possibly tired?

bb. while the best info i can see is that you would have a mc-1 drive. however my 1 drive only has two plugs, drain and vent. fill from bottom till it runs out the vent. have it level.

on your other thread someone was talkin about the ez shift version drive. which was apperently used several years prior to yours. while i've not looked at that section in the service manual for a bit. seems the ez shifts had separate lowers and uppers, they didn't share gear lub. hence maybe more fill, vent plugs. id your drive by s/n. maybe go back to your original post and post up a pic. of what ya got.