Gearbox removal- have have i undone everything??

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Dotong

Seaman Apprentice
Joined
Aug 11, 2009
Messages
43
Hi guys,

im trying to remove my lower unit but it wont move more than 1/8". i have a mercury classic fifty and this is my first time removing it. ive undone the trim tab,and the nut underneath, also the nut above the prop and the two side bolts as far as they will go!! have i missed anything??

Thanks
 
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ufm82

Master Chief Petty Officer
Joined
Jul 29, 2003
Messages
827
Re: Gearbox removal- have have i undone everything??

Shift linkage???
 
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Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
27,158
Re: Gearbox removal- have have i undone everything??

If you got the bolt under the zinc anode, the rest are obvious. If it won't seperate, the driveshaft probably corroded into the crankshaft. There are many threads on this topic. You might search them up.

Gentle persuasion with wood wedges may do it.
 
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Dave1027

Lieutenant Junior Grade
Joined
May 25, 2010
Messages
1,078
Re: Gearbox removal- have have i undone everything??

I used a wood chisel to help separate mine. Be very careful. The aluminum dents easily.
 
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ufm82

Master Chief Petty Officer
Joined
Jul 29, 2003
Messages
827
Re: Gearbox removal- have have i undone everything??

I posted that with a question mark as I don't know how the Mercs were assembled. Mine simply mates to a splined rod but some older linkages had a coupler with a set screw/locking bolt holding them together. I had hoped someone else would chime in.

UFM82
 
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