have one drive pump that is too weak to move the drives at speed and, assuming that pumps are rebuildable and have couple of questions if anyone knows...

1) can't see ANY numbers on any of the pumps to identify them as to type/flow rate etc... and i am told there are many many different versions... how do i id what i have ?

2) who is a good source for rebuild kits for these please ?

Don't even bother trying to rebuild them. (the valve body is not serviceable.

Just call Marc @ BAM Marine. He's got the best prices on brand new Merc pump assemblies.

really really not serviceable as in welded closed and no parts avail or something or just " not reccommended except by a professional" sort of not serviceable ?

i would say not really serviceable. i use bams site with the picture parts lookup. trim pumps used to be 320.00 for a new complete , now 375.00 .

there is 1 on ebay now "new" for 300.00 but seller has 0 feedback.

here is parts diagram from bam-
http://www.mercruiserparts.com/Show_...%28COMPLETE%29

marcs site has been very usefull. i have bought alot of parts there also..

try changing the fluid , sometimes it brings them back to life assuming the electic motors are good .
if the pumps are bad buy the whole valve body, do not try to rebuild with rebuild kit or replacement parts .

i used a dozen dif suppliers when i was putting the boat together and by far, bam was the best. i have a minor sort of relationship with them now and they are my first call always... well ... pump deal next on the list...thx