Reply
 
Thread Tools Search this Thread Display Modes
 
Old 02-13-2021, 04:33 PM   #1
Veteran Member
 
Nick F's Avatar
 
City: Vancouver
Vessel Name: L'Attitude (previously Khenko)
Vessel Model: CHB 34 1976
Join Date: Sep 2020
Posts: 75
Raw water pump cover - using the second side

I am getting to know my new (to me) 1976 boat. I am rebuilding the (Johnsen F5B) raw water impeller pump and the inside face of the cover is badly worn (see photo). Since the face of a new cover is just flat, it occurred to me that all I needed to do was to install the cover with the worn face to the outside. Not so easy! The manufacturer has stamped his (her) name etc. on the outside of the cover (see photo).

I thought about sanding the face smooth but it could be a lot of sanding and it is important that the surface be flat. Our friendly machinist at work helped me out and skimmed off 0.012"(twelve thousandths) - and I am set to go!! (see photo)

Nick
Attached Thumbnails
Raw cover - worn.jpg   Raw cover machined2.jpg  
Attached Images
 
__________________
Advertisement

Nick F is offline   Reply With Quote
Old 02-16-2021, 08:56 AM   #2
Senior Member
 
Redhook98's Avatar
 
City: Colonial Beach, VA
Vessel Name: Tatoosh
Vessel Model: 1979 49ft Marine Trader RPH
Join Date: Jun 2019
Posts: 226
I found mine flipped round by the PO, for no reason. It was using the engraved surface inside the pump with the impeller riding on it. Actually, it worked just fine like that. I only turned it back around because I am OCD.
__________________

__________________
"Everything on your boat is broken.... You just don't know it yet."
Redhook98 is offline   Reply With Quote
Old 02-16-2021, 09:24 AM   #3
TF Site Team
 
Bacchus's Avatar
 
City: Seneca Lake NY
Vessel Name: Bacchus
Vessel Model: MS 34 HT Trawler
Join Date: Nov 2014
Posts: 5,116
I have flipped mine. Just polish off any burrs from markings with fine wet & dry.
__________________
Don
2008 MS 34 HT Trawler
"Bacchus"
Bacchus is online now   Reply With Quote
Old 02-16-2021, 10:36 AM   #4
Guru
 
Pete Meisinger's Avatar
 
City: Oconto, WI
Vessel Name: Best Alternative
Vessel Model: 36 Albin Aft Cabin
Join Date: Oct 2012
Posts: 2,068
They are made to be reversible.

pete
Pete Meisinger is offline   Reply With Quote
Old 02-17-2021, 07:23 AM   #5
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 21,923
Flat is the key , folks that travel should stop at any big glass store and see if they will trim a busted piece of 1/2 or thicker plate glass to a modest size and trim the edges.



Now any piece of emery cloth and some rubbing can refresh a true flat surface.
FF is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 05:32 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012
×