[C320-list] Perkins Raw Water Pump

[Welch, Myron D]

Irv,

My boatyard is also recommending replacement. If they change the seals, they often find a scored shaft. Then you are in for another expensive part, a delay while they order and receive the part, and a very big labor bill. You could easily end up with a rebuilt pump costing nearly the same as new.  To just pull the pump and replace with a new one is a minimal labor charge. 

Now I'm on the quest to find a reasonably priced new pump. 

Myron Welch
Wind Instrument #238
Iowa City, Iowa

Sent from my iPod Touch

On Jul 11, 2011, at 8:04 PM, "Irving Grunes" <igrunes at gmail.com> wrote:

> All,
> Again before trying a rebuild, check ebay for a replacement pump.
> On our Yanmar 3GM it was so cheap, it didn't pay to consider a rebuild.
> Replace and throw the old one away.
> Irv 2001 #851
> 
> On Mon, Jul 11, 2011 at 5:48 PM, Warren Updike <wupdike at hotmail.com> wrote:
> 
>> Myron, I'm interested in your project as my Perkins is approaching 2,000
>> hrs
>> and I will probably need a rebuild of the pump before long.
>> 
>> I've not done this so my advice is anecdotal.  It is a Jabsco pump and
>> parts
>> are readily available.  I've thought I would have mine rebuilt as I've no
>> idea what's involved in the rebuild: do I have the necessary tools.  I've
>> used a web site www.depcopump.com that has lots of good info about such
>> pumps.  I've thought I would get a rebuild estimate from them.  You can
>> also
>> get the necessary parts from them.
>> 
>> Removing the pump is probably doable considering that since you're asking
>> the question you're probably considering doing it yourself.  However, refer
>> to Section X, of the Detroit Diesel manual for instructions on this pump.
>> It says, "Attention": Do not remove the drive housing of the raw water
>> pump.
>> The alignment of this housing has been carefully adjusted with a special
>> alignment tool."  Then it refers to 4 "set screws" that fasten the pump to
>> the drive housing that you may remove.
>> 
>> As for the serial number, as I remember, it is stamped on a plate attached
>> to the engine on the stbd side forward somewhere above the high-pressure
>> fuel pump.  I think it records a model and serial number. Mine is: model
>> KD3024J; Serial: 51554X.  If you have trouble locating it, let me know and
>> I'll verify where mine is located.
>> 
>> Hope this helps.
>> 
>> Warren & Pattie Updike
>> 1994 C320 #62 "Warr De Mar"
>> 
>> 
>> -----Original Message-----
>> From: Welch, Myron D [mailto:myron-welch at uiowa.edu]
>> Sent: Sunday, July 10, 2011 10:57 PM
>> To: <C320-List at Catalina320.com>
>> Subject: [C320-list] Perkins Raw Water Pump
>> 
>> The raw water pump shaft seal on my 1995 Perkins is dripping. The engine
>> has
>> just under 1,000 hours of use.
>> 
>> Is it best to put in a new seal or should I just replace the complete pump?
>> 
>> If replacing the pump, where is a good place to purchase without breaking
>> the bank?
>> 
>> Is this an easy job to remove and replace or should the boatyard mechanic
>> do
>> it?
>> 
>> One company asked me for the serial number of the engine. Where do I find
>> the SN?
>> 
>> Thanks for your help.
>> 
>> Myron Welch
>> Wind Instrument, #238
>> Iowa City, Iowa
>> 
>>