Copper Water Tube Seal

[Nikon Man]

What's the proper method on installing the rubber seal and copper water tube ? What goes in first ?

99 Merc 175 EFI OG947018

I've put the seal into the plate first but then I can't get the water tube fully inserted.
I've put the seal onto the water tube and tried to insert from the top of the plate and it feels like I'm gonna tear it up.....

Thanks

[EuropeanAM]

Normally install the seal into the plate from the TOPSIDE, lube the seal with dawn dish-soap or 2-4-C and insert the water tube from below.

If you're using a custom water tube (suspect you are), double check the OD against the original tube.

[Nikon Man]

Normally install the seal into the plate from the TOPSIDE, lube the seal with dawn dish-soap or 2-4-C and insert the water tube from below.

If you're using a custom water tube (suspect you are), double check the OD against the original tube.

Hi Don,

I don't have the original tube, I have the tube Chapman supplied (.622-.624 DIA.) so I have no idea what the diameter of an OEM tube should be.

[EuropeanAM]

Gary- I should have one in my hands later today or tomorrow, so I'll get a measurement on it.

[Nikon Man]

Gary- I should have one in my hands later today or tomorrow, so I'll get a measurement on it.

Thanks Don, no hurry. Also.....what's the length on a water tube for a 20" mid ?

[EuropeanAM]

0.62" OD.

20" mid water tube length was 18.81"

[Nikon Man]

0.62" OD.

20" mid water tube length was 18.81"

Thank you Don, I'll check it out this week.

[JOE54]

Normally install the seal into the plate from the TOPSIDE, lube the seal with dawn dish-soap or 2-4-C and insert the water tube from below.

If you're using a custom water tube (suspect you are), double check the OD against the original tube.

only way i know also

[Nikon Man]

only way i know also

Thanks Joe, that'll be the plan.

[JOE54]

see if you can find some 1/2 in thin wall hard cooper tubing will be in a straight piece used this before/ that bushing is same as one in w/p housing just flipped over in adapter plate notice hard platic on part of it

[Nikon Man]

see if you can find some 1/2 in thin wall hard cooper tubing will be in a straight piece used this before/ that bushing is same as one in w/p housing just flipped over in adapter plate notice hard plastic on part of it

Thanks again Joe. I'll be back on that next week.

[EuropeanAM]

Not to state the obvious... but remember that the hard plastic side faces UP (and the beveled/rubber end faces down).