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 Catalina 25 Specific Forum
 Mast truck maintenance.		  New Topic  Topic Locked
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atgep
Master Marine Consultant

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1009 Posts
Initially Posted - 04/15/2004 :  22:33:13  Show Profile
Just a reminder for those who have not stepped the mast to check the mast truck pins. My pins on the fore and aft stay are so corroded that they had to be cut and drilled out. The corrosion will lead to destructive pressures inside the alloy casting resulting in the truck cracking....or worse. Now mine are loose and lubriplated.
PO of 1988 Wing HN 5775
"Cote d'Azure"
Fleet 25
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Ben
Master Marine Consultant

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USA
1234 Posts
Response Posted - 04/16/2004 :  07:15:13  Show Profile
Thanks for the heads-up, Atgep.

Now, can you educate those people out there (like me), who don't understand the phrase "mast truck?" Got pictures?
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ClamBeach
Master Marine Consultant

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3072 Posts
Response Posted - 04/16/2004 :  09:36:25  Show Profile
I think atgep is talking about corrosion on the masthead casting.
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atgep
Master Marine Consultant

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1009 Posts
Response Posted - 04/16/2004 :  15:24:22  Show Profile
You are right is is the masthead casting. If you find your pins are stuck in place you have 2 options-leave them untill they crack the casting or drill them out. my pins drilled out pretty easily. I first cut the ends off with a high speed cutter and then cut the center out with the cutter. If it were the halyard pins it would have been a little different story. Here is a link to a picture.

http://www.catalinadirect.com/masthead%20truck.html
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dgabel
1st Mate

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USA
75 Posts
Response Posted - 04/16/2004 :  16:30:45  Show Profile
I tried to get my mast truck off last year and failed miserably. The screws that are holding it are frozen in place. Any suggestion for getting them out?

Dave Gabel
Walkure
Sail 1484
1979 Tall rig, fin keel
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ClamBeach
Master Marine Consultant

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3072 Posts
Response Posted - 04/16/2004 :  19:54:34  Show Profile
Kroil... PB Blaster. Let it soak. Maybe a little tiny bit of heat to encourage oil penetration and seperate the junctions. (not much heat on aluminum).
Impact driver if you have one.
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atgep
Master Marine Consultant

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1009 Posts
Response Posted - 04/16/2004 :  22:37:27  Show Profile
You should be able to drill out the stainless screws and oversize them if needed. I will be paying closer attention to the whole stainless/aluminum issue in the future.
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frich
Captain

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USA
418 Posts
Response Posted - 04/17/2004 :  21:54:46  Show Profile  Visit frich's Homepage
I just removed my masthead to install new wiring. I gave the screws a little tap to shock them, soaked them in WD40 fo a few minutes and then used channel locks to break them loose. Then went to West Marine a nd bought replacement screws.

Frank R
84 C25 SK
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.