Water Pump Install Question

[flhunter27]

I'm Installing a new water pump and I was wondering about the adhesives and gasket sealing compounds the manual calls for. Do you really need them or are they just there to keep the o-rings and gaskets in place? Thanks to all who reply.

 

[HighTrim]

Re: Water Pump Install Question

What model outboard?

Get yourself a can of BRP Gasket Sealing Compound. It will be a brown fluid and will have a built in brush in the lid. You should also get a tube of marine grease to put on the splines of the drive and prop shaft during re installation.

 

[flhunter27]

Re: Water Pump Install Question

Thanks for the reply, the motor is a johnson 150 1991. I have another question / problem. I got everything put back together, followed the oem manual step by step, and now I have an extra o-ring. Double checked the steps and parts diagram in book and don't see it anywhere. I put three on it during install, 1) Under the impeller cup. 2) Special shaped one around housing. 3) on top of drive shaft under splines. Thanks for any replies.

 

[kmdfluker]

Re: Water Pump Install Question

Get the OMC compound per the instalation instructions.

 

[Solittle]

Re: Water Pump Install Question

Often parts kits fit several models and may have an extra stuff to accomodate.

 

[Benny1963]

Re: Water Pump Install Question

what kit do you have if it is sierra the larger oring goes between cup and houseing if it is evirude kit they use a seal in the houseing for the drive shaft.
if you have a groove on the top of drive shaft there will be and oring smaller
thanks bennyb

 

[flhunter27]

Re: Water Pump Install Question

It's a BRP kit 18-3392. The O-ring is about an inch in dia. and is kinda thick? I didn't see it anywhere, everything is put back together and I'm to give it a try. I did put the one on the driveshaft in place.

 

[jtexas]

Re: Water Pump Install Question

the OMC adhesive "M" specified for the junction of the lower unit and the midsection is obsolete, they've specified a 3m product (forget the name) as replacement - until I got some of that I used permatex #2 with no ill effects.

 

[Chris1956]

Re: Water Pump Install Question

OK -There is an oring between the SS liner and the upper pump housing, an Oring under the impeller(on top of the wearplate), an oring (d-shaped) that seals the base of the upper housing and one on the driveshaft.

 

[flhunter27]

Re: Water Pump Install Question

Thanks to all who replied. I cranked the motor up and it wasn't peeing. So I had to take everything apart again. After close examination of the old kit I figured out the gasket went under the impeller on the top of the plate. At least it was a good learning experience, cup half full guy, I was able to drop foot, put o-ring in place and assemble it in an hour flat. First time took sveral hours. Again thanks to all.