Mercruiser 5.7 water pump

[crewkid1288]

I want to install a water pump and an impeller on my 1990 aplha 1 outdrive which runs on a 5.7 260 hp mercruiser i/o. How do i install these parts?

 

[rodbolt]

Re: Mercruiser 5.7 water pump

hello<br /> first you buy a service manual, read the manual several times. post back with any specific questions about the procedure your uncomfortable with<br /> good luck and keep posting

 

[crazy charlie]

Re: Mercruiser 5.7 water pump

Welcome Crewkid!!Remove drive from boat and take apart into 2 halves.The lower will have the housing with the impeller inside.remove the housing and see if the impeller comes right off or you may have to chisel it off.If it comes right off ,take the lower plate off and put new plate and gasket and put grease on the shaft before you install new impeller.Make sure you replace the key.Push housing while turning shaft to help impeller enter the housing.It would be best to have a manual on hand while doing this ,it will give you little pointers and tips so it will get done perfectly.Charlie

 

[Capt Ken]

Re: Mercruiser 5.7 water pump

Save yourself a hernia and just drop the lower gear housing of the drive. No need to remove complete drive to replace pump.

 

[Bondo]

Re: Mercruiser 5.7 water pump

Very True, Capt Ken,<br />But, It's Also a Great Time to Inspect the rest of the Drive System for Maintaince Problems......

 

[dvarnadore]

Re: Mercruiser 5.7 water pump

What Rod bolt said Anything you have mechanical you should invest the money to BUY THE SHOP MANUAL take your time, read it, don't just browse the pictures.It will save you Time and money in the long run.<br />Good Luck!