Mercruiser 470 Circulating pump leaks

S

searay1987

Recruit
Joined
Apr 22, 2006
Messages
2
1987 Mercruiser 4 cylinder FWC - leaks antifreeze out of the weep hole on the circulating pump .( pump is part of the timing chain / front cover and not replacable ) I replaced the 2 camshaft seals and installed Redi-Sleeves over the scores on the camshaft. Still leaks , though not quite as much . Any ideas ? <br />Thanks<br />Bob
 
M

MrBill

Senior Chief Petty Officer
Joined
Aug 4, 2002
Messages
710
Re: Mercruiser 470 Circulating pump leaks

You've probably reviewed this material already since you're apt enough to tackle this problem yourself. Check this link for some hints or possible errors you may have made during the repair. Check or pressure test the cap, go for the lowest pressure cap you can find, maybe your over heating a bit and build too much pressure.
 
lilmandavis

lilmandavis

Chief Petty Officer
Joined
Mar 9, 2006
Messages
618
Re: Mercruiser 470 Circulating pump leaks

i would put a shim behind the new seal to bump it out .015 or .020" to get on fresh steel and not in the groove of the old seal.
 
R

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: Mercruiser 470 Circulating pump leaks

what did you use to seal the sleeve to the cam ?
 
S

searay1987

Recruit
Joined
Apr 22, 2006
Messages
2
Re: Mercruiser 470 Circulating pump leaks

lilmandavis - do you mean move the seal in relation to the cover ? or put a shim on the camshaft ? i put new sleeves on the cam , so the seal should be on fresh steel<br /><br />rodbolt - i used locktite on the sleeve<br /><br />thanks <br />bob
 
J

jbar

Recruit
Joined
Jul 1, 2009
Messages
2
Re: Mercruiser 470 Circulating pump leaks

Where Can You Get A Sleeve For Camshaft
 
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