replacing waterpump on 1986 johnson 175.

[bgooden]

any help on replacing water pump? Is it very difficult to do? Do i need special tools? I do have a shop manual to guide me. I want to replace all the stuff i can while i got it apart. I have never worked on a boat motor before, but i do have mecanical skills.

 

[kenmyfam]

Re: replacing waterpump on 1986 johnson 175.

Take a look at this link.
It may help some.

http://forums.iboats.com/showthread.php?t=309188

Ask away if you have any questions.

 

[bgooden]

Re: replacing waterpump on 1986 johnson 175.

I got the lower unit off today. Wasn't that hard to remove,thank god. Now for the questions, How do i tell if the water pump is bad? I know that is a dumb question( since i am replacing it anyway ) but i still want to know? The cup looks good no skid marks. impeller looks alright but the housing looks like it was melted a little. Take a look at the pics and tell me what you see. The one pic with the o ring , that is what it looked like when i removed it. Could this be my problem?How do i get the shifter shaft bolt in ? It's pretty tight quarters in there .

 

[wilde1j]

Re: replacing waterpump on 1986 johnson 175.

I would install a complete kit, since the housing looks bad, and the liner has some grooving. It's not that much money compared to the time involved.

 

[bgooden]

Re: replacing waterpump on 1986 johnson 175.

I plan on replacing the whole thing.

 

[kenmyfam]

Re: replacing waterpump on 1986 johnson 175.

Do it all....do it right....peace of mind !!!!

 

[bgooden]

Re: replacing waterpump on 1986 johnson 175.

i still would like to know how to tell if it is bad. what are the signs of a bad pump? I just want to know.

 

[ezeke]

Re: replacing waterpump on 1986 johnson 175.

The metal liner and the impeller plate should be smooth, not grooved. The housing should not be cracked. The o-ring seal between the housing and the liner should be in good condition.

Check the water intake screen while you are in there; it needs to be in good condition to keep sand and other particles out of the cooling system.

 

[bgooden]

Re: replacing waterpump on 1986 johnson 175.

Where is the screen? I didn't see one. I will look tomarrow and see if i can find it.the housing is not cracked but melted a little. It doesn't seem like it would hurt the flow of water.

 

[ezeke]

Re: replacing waterpump on 1986 johnson 175.

You have to remove the water pump and impeller plate to reach the screen, so if it's broken or cracked this would be a good oppprtunity. Click the thumbnail, please.

 

[bgooden]

Re: replacing waterpump on 1986 johnson 175.

I found the screen and it looks like it is in good condition , not blocked or cracked. I plan on replacing the waterpump this weekend. Any advice on how to replace the shifter shaft bolt? I know it was harder to get that bolt than to remove the lower unit. I don't want to tear apart the carbs so if anybody has any tricks please tell..

 

[wilde1j]

Re: replacing waterpump on 1986 johnson 175.

I use a 12" extension and a swivel socket (3/8" drive) to replace the pin. It helps to have a good light source and use a little heavy grease to hold the pin in the socket and some grease to stiffen up the socket, if loose. I've never removed carbs to get it back together. After you do it once, you'll get the hang of it.

 

[kenmyfam]

Re: replacing waterpump on 1986 johnson 175.

I found the screen and it looks like it is in good condition , not blocked or cracked. I plan on replacing the waterpump this weekend. Any advice on how to replace the shifter shaft bolt? I know it was harder to get that bolt than to remove the lower unit. I don't want to tear apart the carbs so if anybody has any tricks please tell..

Check the link out in post #2 Many photos and a write up on it.

 

[Pokertrampp]

Re: replacing waterpump on 1986 johnson 175.

Here is another good link to a step by step procedure on changing a waterpump.

http://support.crowleymarine.com/entries/122937-how-to-replace-an-outboard-water-pump

 

[bgooden]

Re: replacing waterpump on 1986 johnson 175.

got my waterpump on today..everythings ok pea stream is strong and water is coming out where it is suppose to. this was my first one i think i did ok.