Impellor change struggle.

[chuzzlewit]

Last autumn it was done by professionals. Yesterday I decided on DIY. Couldn't shift the screws (slot headed). In the end I had to fetch my impact driver, which did the trick. Made me think about doing it as an emergency with the boat bouncing about. I now have hexagonal socket(Allen) screws and an Allen key hanging nearby.

 

[vas]

similar reasons, same solution!
In hindsight I should have gotten torx which are much better and can take more abuse.

Did you go for ss or galvanized?
I got ss but I then noticed that originals were galvanized (at least I think)

cheers

V.

 

[burgundyben]

Thumb screws from speedseal. Bosh.

 

[Dick Atcherley]

Last autumn it was done by professionals. Yesterday I decided on DIY. Couldn't shift the screws (slot headed). In the end I had to fetch my impact driver, which did the trick. Made me think about doing it as an emergency with the boat bouncing about. I now have hexagonal socket(Allen) screws and an Allen key hanging nearby.

Put my old bolts back in, with lashings of copperslip

 

[GrahamHR]

What vague post; no mention at all of engine manufacturer or model. There is surely not an universal problem or solution.

 

[petem]

What vague post; no mention at all of engine manufacturer or model. There is surely not an universal problem or solution.

I think the problem is pretty universal with hard to remove covers on most engines. They speedseal kits that Ben recommends kits are available for most engines to solve the problem.

 

[chuzzlewit]

Stainless. Cost £1.
similar reasons, same solution!
In hindsight I should have gotten torx which are much better and can take more abuse.

Did you go for ss or galvanized?
I got ss but I then noticed that originals were galvanized (at least I think)

cheers

V.

 

[burgundyben]

I did wonder when I bought the Speedseal covers with the stainless knurled thumbscrews about the galvanic difference and possible affect on the body of the pump. Jabsco used brass screws for a reason. I didn't reach a conclusion.

 

[Forty_Two]

I did wonder when I bought the Speedseal covers with the stainless knurled thumbscrews about the galvanic difference and possible affect on the body of the pump. Jabsco used brass screws for a reason. I didn't reach a conclusion.

Used them for years with no problems evident, no more broken or snapped brass screws ever again, hallelujah.

 

[rafiki_]

On my Cat 3126's, you can inspect the impeller in situ, but have to remove the pump to change, as there is not sufficient space to withdraw said impeller. This means disconnecting several of the raw water hoses. Not a job I fancy while bobbing about on the briny!!!

 

[petem]

Seems like there's a few engines that require some degree of dismantling to change the impeller. In those cases, wouldn't this kit that allows some dry running before the impeller shreds not be a good idea http://www.speedseal.com/SpeedsealLife/SpeedsealLife.html?

 

[Dick Atcherley]

With my Sherwood pumps on the cummins 6bt, the impellers are a ball-ache to change, so I have gone over from the neoprene OEM items to these

http://www.globecomposite.com/Marine_Products_Impeller

 

[PCUK]

On my Cummins 6BTA I carried a complete spare pump which was easy to change.