07-29-2014, 09:25 AM #1
Liquid sealant holding pump housing to transom?
Currently replacing my wear ring, and so far it's only taken me like a 1/2hr to get this far.
But this is were I'm currently stuck; 3 outta the 4 studs holding the pump housing to the transom look like the first pic, i.e. not stuck.
But the last stud, second pic, it looks like there's liquid sealant/silicone in between the stud and hole (and prolly around some of the mating surfaces too), basically bonding the housing to the transom. I know this is what's holding me up cuz I can wiggle the entire housing about 1/8" everywhere else.
I've tried picking away at the sealant which is slow going, gently and carefully prying with a small crowbar, and putting the venturi with the two top bolts back on and pushing downwards to loosen the sealant on the top.
07-29-2014, 10:58 AM #2
There might be some silicone on the studs from when the boat was assembled. They use silicone to hold the pump support to the hull. There is no sealant used on the studs, the nuts are nylock.
07-30-2014, 09:24 AM #3
Right. Now any tricks to getting the pump housing off?
07-30-2014, 09:49 AM #4
07-30-2014, 11:03 AM #5
Use heat, the sealant will soften
07-30-2014, 12:32 PM #6
should come off with a good yank... I wouldnt heat it, it might soften the sealant behind the pump support and cause a leak if over heated.....
07-30-2014, 12:33 PM #7
07-30-2014, 09:18 PM #8
Finally got it. I tried the 2x4 at first, but it didn't fit in the nozzle
Then after 3-4 attempts of 30 seconds of heat and prying with a tiny flathead and crowbar she came off. Yanking wasn't gonna do anything.
After a quick inspection of the old wear ring, clearance spec is .014"...... the grooves in mine appear to be around .05-.07.
I can't effing wait to see how well she hooks up w/ a good wear ring! But the weird thing is she never cavitated outta the hole.
07-30-2014, 09:25 PM #9
Also kinda pissed to see that the OEM wear ring is something I simply coulda made outta some ABS plastic on a lathe. Or stainless if I wanted, just cutting speeds woulda been more critical.
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