Cruisers Forum

Join CruisersForum Today

Thread Tools Search this Thread Rate Thread Display Modes
Old 29-07-2011, 15:58   #1
Registered User

Join Date: Apr 2010
Location: Seattle, WA USA
Boat: Hallberg Rassy 38
Posts: 16
Volvo MD21b Circulation Pump Options

Noticed play in the circulation pump shaft/pulley... went online to order a repair kit and possibly a new housing (haven't taken it off yet, but want to plan for the worst) and was disappointed to learn that all of the circulation pump parts are now out of production. Wanted to leverage the intelligence of the forum to discuss options. Here is what I've come up with so far:

A) Possibly pay through the nose for a complete pump that a gentleman is having manufactured in Sweeden next week.
B) Find someone with a rebuild kit and hope the housing is ok
C) Convert to a Jabsco pulley driven pump?
D) Convert to a Jabsco electric pump?

Other ideas?

Re-power is also an option... but would rather get at least 2000 more hours out of the old Volvo since the rest of the engine is in great shape.

What would the best option be?
Rhythm is offline   Reply With Quote
Old 31-07-2011, 19:12   #2
Registered User

Join Date: May 2011
Posts: 134
Re: Volvo MD21b Circulation Pump Options

First off keep in mind I've never even seen your particular type engine but after looking at the exploded parts diagram it would seem you can buy most of the wear items and rebuild the pump. I am assuming that your engine is freshwater cooled and that the impeller is still usable. I would be leery of an impeller type pump running in hot water and also the thermostat when closed would restrict the flow too much for the impeller. An electric centrifugal pomp would most probably do the job just fine. I can't remember the manufacturer's name but they are used in buses and motor homes to circulate hot water from the engine to the heaters in the back of the bus. Good luck. Just my two cents, Mike.
Florida Mike is offline   Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Challenge: Check Valves Greg S Challenges 24 26-07-2011 15:19
Volvo Penta MD2020 Seawater Pump Running Backwards akmike Engines and Propulsion Systems 4 15-07-2011 07:06
Bilge pump battery bcguy Plumbing Systems and Fixtures 3 24-06-2011 20:30

Advertise Here

All times are GMT -7. The time now is 17:43.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.