Water Pump Seal Gasket....Mine doesnt have one...

Working on a few things trying to get my boat running correctly. Today I installed (tried to install) a new water pump kit for a 1991 150 Black MAX.

When I took the old unit out there was not a O-ring, "slinger" or sealing gasket on the driveshaft. Looking in the service manual, the closet water pump picture they show to mine is the 40hp, 50hp, and 60hp "high pressure pump."



As you see in the pik there is a seal.

When I look to the 150hp model in the manual it shows an O-Ring....however my pump did not look like what the book shows.


Lastly, when I look it up on Mercury parts it shows an O-ring (item 36) but says as a side note "If applicable."



Advice??? Leave with no seal...throw in the o-ring or the larger rubber seal that I got in the kit....trying to avoid getting stranded on the water for a third time.

Thanks!!!

Re: Water Pump Seal Gasket....Mine doesnt have one...

You have a few threads running here and I just read your one about the Voltage Regulator and see where you are spending money on tools etc. You should always correctly identify your engine with the s/n/model number before ordering parts.

So, first of all, what is your engine s/n?

Gerry

Re: Water Pump Seal Gasket....Mine doesnt have one...

Leave with no seal.

Click to expand...

No as this keeps exhaust gasses out of impeller at idle and keep water from climbing driveshaft to lower splines.

.throw in the o-ring or the larger rubber seal that I got in the kit

Click to expand...

No o-ring just the large rubber seal....

Re: Water Pump Seal Gasket....Mine doesnt have one...

carholme said:

You have a few threads running here and I just read your one about the Voltage Regulator and see where you are spending money on tools etc. You should always correctly identify your engine with the s/n/model number before ordering parts.

So, first of all, what is your engine s/n?

Gerry

Click to expand...

S/N is ODO29489

Re: Water Pump Seal Gasket....Mine doesnt have one...

That s/n comes up as:

MERCURY - (150 H.P. (1991 ))
Serial No: 0D029489 Model No: 1150412LD

Here is the Parts and Service Bulletin list for s/n 0D029489

Search Results - Crowley Marine

You will see the slinger ring as item 36 under GEAR HOUSING (DRIVE SHAFT) STANDARD ROTATION 135/150

Gerry

Re: Water Pump Seal Gasket....Mine doesnt have one...

carholme said:

That s/n comes up as:

MERCURY - (150 H.P. (1991 ))
Serial No: 0D029489 Model No: 1150412LD

Here is the Parts and Service Bulletin list for s/n 0D029489

Search Results - Crowley Marine

You will see the slinger ring as item 36 under GEAR HOUSING (DRIVE SHAFT) STANDARD ROTATION 135/150

Gerry

Click to expand...

Makes sense to me. Thanks!