Jump to content

Welcome to TheMalibuCrew!

As a guest, you are welcome to poke around and view the majority of the content that we have to offer, but in order to post, search, contact members, and get full use out of the website you will need to Register for an Account. It's free and it's easy, so don't hesitate to join the TheMalibuCrew Family today!

Sign in to follow this  
badeeba

Raw water pump catastrophe

Recommended Posts

badeeba

So, my impeller shattered and broke the casing of my raw water pump. 1994 echelon with a merc 350. Replaced the broken parts. Boat runs and cools fine. Do I need to be concerned with little impeller parts plugging up the cooling system? If so, what is the remedy?

Sent from my SM-G900T using Tapatalk

Share this post


Link to post
MadMan

The impeller pieces usually get trapped at input to the transmission cooler. This can cause cooling troubles. Just remove the hose and take out the pieces.

Share this post


Link to post
justgary

Is it possible that the pump froze with water in it? I'm surprised that an impeller can take out the housing.

Share this post


Link to post
Dare2goBare

Is it possible that the pump froze with water in it? I'm surprised that an impeller can take out the housing.

Yes I'm very surprised to.

Share this post


Link to post
BlastRlxi

I think the raw water pump on the older Merc's are different than what we are used to on the Indmar's.

Share this post


Link to post
badeeba

Is it possible that the pump froze with water in it? I'm surprised that an impeller can take out the housing.

I don't think so, This was my 6th trip out this season.

Sent from my SM-G900T using Tapatalk

Share this post


Link to post
justgary

I don't think so, This was my 6th trip out this season.

Sent from my SM-G900T using Tapatalk

Sorry, just checking.

Share this post


Link to post
MalibuResponse97

Black Scorpion with the plastic/ABS housing water pump?

Share this post


Link to post
badeeba

Black Scorpion with the plastic/ABS housing water pump?

Yes

Sent from my SM-G900T using Tapatalk

Share this post


Link to post
MalibuResponse97

Had the same problem of the casing hosed. Always kept a rebuild kit with me from that day on but have never had to use it

Share this post


Link to post
Woodski

@badeeba: Assuming you have the side mounted / belt driven Jabsco pump (which is standard on Merc's of that era), and you took out the plastic (replacement as brass was original) housing with the impeller failure, I strongly suggest checking the whole pump over. Over time, with wear and parts replacement, the water seal to the bearings can lose the effectiveness and water gets in to the bearing area, which leads to pump failure. There is a rubber lip seal between the bearing housing and the pump housing.

Share this post


Link to post
badeeba

The impeller pieces usually get trapped at input to the transmission cooler. This can cause cooling troubles. Just remove the hose and take out the pieces.

Thanks, pulled the hose and there was a nice collection of impeller chunks wedged up against that screen.[emoji102]

Sent from my SM-G900T using Tapatalk

Share this post


Link to post
malibuparadise

Is it possible that the pump froze with water in it? I'm surprised that an impeller can take out the housing.

Usually they are plastic and get brittle as they age...

Share this post


Link to post

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...