Changing Seawater pump impeller (A How To guide) - Speedwake 2.0
Reply
 
Thread Tools
post #1 of 152 (permalink) Old 05-06-2004, 08:44 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
Cool Changing Seawater pump impeller (A How To guide)

Ok, heres our donor boat, a 2001 Powerquest 380 Avenger with twin 500efi's. The starbord side impeller is original with 142hrs on the clock. The port side was changed last year during a poker run in FL
Attached Thumbnails
Click image for larger version

Name:	fullboatback.jpg
Views:	3467
Size:	32.1 KB
ID:	32700  
Wally is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 152 (permalink) Old 05-06-2004, 08:46 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
And here are the engines. Beauties arent they?
Attached Thumbnails
Click image for larger version

Name:	engines.jpg
Views:	3349
Size:	28.8 KB
ID:	32701  
Wally is offline  
Quote Quick Reply Share with Facebook
post #3 of 152 (permalink) Old 05-06-2004, 08:57 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
the tool we are going to need for this project are:
1/2" box wrench
5/8" box wrench
1/2" sockect 3/8 drive with ratchet
flathead screwdriver
some rags
and 2 zipties

First thing we are going to do i locate the seawater pump. In this case (and just about every other boat out there) its on the bottom left when facing the engine.
Attached Thumbnails
Click image for larger version

Name:	dsc01859.jpg
Views:	3515
Size:	59.7 KB
ID:	32704  
Wally is offline  
Quote Quick Reply Share with Facebook
 
post #4 of 152 (permalink) Old 05-06-2004, 08:59 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
so we now need to get the belt off the pully. The tensioner pully is the black pully just above. Take the 5/8" wrench or socket if you want and just loosen the nut. No need to take it all the way off as you will see when you start it drops almost right away. Move the belt to the side so its out of your way.
Attached Thumbnails
Click image for larger version

Name:	dsc01860.jpg
Views:	3414
Size:	59.5 KB
ID:	32705  
Wally is offline  
Quote Quick Reply Share with Facebook
post #5 of 152 (permalink) Old 05-06-2004, 09:23 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
Ok, in this case theres a mechanical fuel pump on the pump. So we need to unhook the fuel lines from the pump going to the filter (5/8" box wrench) and the fuel line supply to the pump (flat screwdriver). Thia is were you need the rags!!! You will also need to unhook the two water lines off the back of the pump. Make note as where each one goes to. You mix them up and you WILL ruin a brand new inpeller on startup!!! And when you have done all that you will need the 1/2" socket and drive to loosen the 4 bolts that hold the pump to the bracket. When you look at your pump assembly you will see that there is one bolt that has a nut on the back side......leave that one on as its not affecting removal of the pump.
Attached Thumbnails
Click image for larger version

Name:	dsc01861.jpg
Views:	3449
Size:	59.7 KB
ID:	32709  
Wally is offline  
Quote Quick Reply Share with Facebook
post #6 of 152 (permalink) Old 05-06-2004, 09:25 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
Now that you have done all that the pump will slide right out and this is what you have
Attached Thumbnails
Click image for larger version

Name:	dsc01862.jpg
Views:	3441
Size:	60.4 KB
ID:	32710  
Wally is offline  
Quote Quick Reply Share with Facebook
post #7 of 152 (permalink) Old 05-06-2004, 09:27 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
this is the bolt with the nut on the back side........screwdriver pointing to it. Make note of this cause it will serve a purpose later.
Attached Thumbnails
Click image for larger version

Name:	dsc01863.jpg
Views:	3370
Size:	61.5 KB
ID:	32711  
Wally is offline  
Quote Quick Reply Share with Facebook
post #8 of 152 (permalink) Old 05-06-2004, 09:30 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
ok so we take that last bolt out and pull the houseing off. Look at the way the impellor turns and make note of it. Its actually marked on the back side of the pump housing but just to be safe incase you happen to have a reverse rotaton pump. As we can see in this pic there are 4 blades damaged that we can see even before pulling the impeller out.......its gets better.......
Attached Thumbnails
Click image for larger version

Name:	dsc01864.jpg
Views:	3443
Size:	60.1 KB
ID:	32713  
Wally is offline  
Quote Quick Reply Share with Facebook
post #9 of 152 (permalink) Old 05-06-2004, 09:31 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
ok we romeve the impeller to find.........holy cow!!! nothing left!!!
Attached Thumbnails
Click image for larger version

Name:	dsc01867.jpg
Views:	3315
Size:	58.1 KB
ID:	32715  
Wally is offline  
Quote Quick Reply Share with Facebook
post #10 of 152 (permalink) Old 05-06-2004, 09:35 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
And this is where the whole back flushing this takes place.......luckly for us we didnt need to do this since all of the pisces were in the lower hose when i removed it!!! If they werent there you need to find them! Last thing you need is a piece going through the cooling system and cloging an exhaust cooling port! Most time what you would need to do is unhook the supply line going into the thermostat from the seawater pump and hook up the garden hose to backflush the parts out.
Attached Thumbnails
Click image for larger version

Name:	dsc01865.jpg
Views:	3231
Size:	59.1 KB
ID:	32716  
Wally is offline  
Quote Quick Reply Share with Facebook
post #11 of 152 (permalink) Old 05-06-2004, 09:38 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
now back to the pump drive itself. Theres is a stainless plate that sits onto of it......remove it as there is a new on in the kit. And under that plate there will be an O-ring in the groove of the pump body. The screwdiver is pointing to it. remove the O-ring and disguard...
Attached Thumbnails
Click image for larger version

Name:	dsc01869.jpg
Views:	3234
Size:	60.6 KB
ID:	32717  
Wally is offline  
Quote Quick Reply Share with Facebook
post #12 of 152 (permalink) Old 05-06-2004, 10:02 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
Ok heres our rebuild kit. New impeller, houseing, bolts and O-ring, and new stainless plate
Attached Thumbnails
Click image for larger version

Name:	dsc01870.jpg
Views:	3215
Size:	59.3 KB
ID:	32718  
Wally is offline  
Quote Quick Reply Share with Facebook
post #13 of 152 (permalink) Old 05-06-2004, 10:04 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
now we begin to put it all back together....first the O-ring gets put back in the groove
Attached Thumbnails
Click image for larger version

Name:	dsc01872.jpg
Views:	3153
Size:	60.4 KB
ID:	32719  
Wally is offline  
Quote Quick Reply Share with Facebook
post #14 of 152 (permalink) Old 05-06-2004, 10:07 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
although its not needed i usually put a very light coating of grease on the O-ring and then install the stainless plate. I dont think there is a right or wrong way to install it but i have noticed that there is a sharp edge and a dull rounded edge on the plate. Most of the factory pumps have the sharp edge against the plate so that the way i usually put it back
Attached Thumbnails
Click image for larger version

Name:	dsc01873.jpg
Views:	3106
Size:	61.8 KB
ID:	32720  
Wally is offline  
Quote Quick Reply Share with Facebook
post #15 of 152 (permalink) Old 05-06-2004, 10:11 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
now comes the fun part of installing the impeller......its helps to coat the houseing and impeller with some liquid soap (Ivory is good since its 99% pure and wont polute the water) i didnt have any available so i used grease again. This does two things.....first it helps with the install and second it helps the impeller life on that first startup so its not completely dry. Make sure to install the impeller in the right direction!!! A twisting motion while pushing in helps.....did you remember to make note of it before?
Attached Thumbnails
Click image for larger version

Name:	dsc01875.jpg
Views:	3159
Size:	56.5 KB
ID:	32721  
Wally is offline  
Quote Quick Reply Share with Facebook
post #16 of 152 (permalink) Old 05-06-2004, 10:13 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
now that you have the impeller in you align the keyway of the shaft with the impeller and put it together
Attached Thumbnails
Click image for larger version

Name:	dsc01877.jpg
Views:	3112
Size:	59.0 KB
ID:	32722  
Wally is offline  
Quote Quick Reply Share with Facebook
post #17 of 152 (permalink) Old 05-06-2004, 10:17 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
rotate the body around making sure you dont move the impeller and align the bolt holes. Install all the bolts temporarily for now and heres where that bolt with the nut comes into play. Once you have eveything alignedtighten the nut and bolt down and snug it up so the houseing doesnt move. you can take out the other bolts other then one dirctly opposite of the bolt you just tightned up......this keep the houseing in check for when you put it back on the bracket.
Attached Thumbnails
Click image for larger version

Name:	dsc01879.jpg
Views:	3094
Size:	58.0 KB
ID:	32723  
Wally is offline  
Quote Quick Reply Share with Facebook
post #18 of 152 (permalink) Old 05-06-2004, 10:20 AM
Registered User
 
Kidnova's Avatar
 
Join Date: Oct 14,2003
Location: Central New York
Posts: 6,710
Great explanation and photos. You make it look easy!

Thanks!
Kidnova is offline  
Quote Quick Reply Share with Facebook
post #19 of 152 (permalink) Old 05-06-2004, 10:21 AM Thread Starter
Registered User
 
Join Date: Jan 3,2003
Location: Chicago, IL
Posts: 2,020
And you are basicly done!!! just reverse the procedure for installing the pump back in the boat and you are good to go.
Any questions calss?

And join us next week when we revisit the 380 Powerquest and go through a step by step on installing a pair of MST guardian flushing systems! Stay tuned
Wally is offline  
Quote Quick Reply Share with Facebook
post #20 of 152 (permalink) Old 05-06-2004, 10:23 AM
Registered User
 
Join Date: Mar 30,2004
Location: Bay City, MI
Posts: 263
Thanks wally... Great job!
ISurvivedNMU is offline  
Quote Quick Reply Share with Facebook
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Speedwake 2.0 forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome