[C320-list] Perkins M30 Injection Pump

[Douglas Nortell]

Hi Bob,
Bleed the injectors one at a time with the lift pump. Once that's done I
start the engine and bleed the injectors while the engine is running being
careful not to crack the injector line nut too far open because of the
pressure. I try and avoid cranking the engine with the fuel off because of
the water collecting in the wet exhaust tank.
Check the Volvo 2030 manual it's a free down load. The Perkins block was
used by a number of manufacturers.
I bought an injector socket online for about $17 and you'll need a
torque wrench. Be careful removing the pin that holds the fuel shut off arm
under the lip of the injector pump. Needle nose pliers are a must.
Adjust the valves as well. My crank pulley didn't have the second timing
mark so I calculated the angle (about 272 Degrees CCW I'm guessing) and
then cut a string the exact length and transferred that to the pulley.
Worked great.
I will be back at our boat in a few days where my manuals are let me know
if I can get you any other info.
Doug
94 #38


On Thu, Oct 1, 2020 at 7:10 AM Bob Borelli <cassattc22 at hotmail.com> wrote:

> Hello Doug,
>
> Can you tell me where I can obtain literature on the removal and
> replacement of injector pump and injectors.
>
> Also after bleeding the lift pump, how do you bleed the injectors?
> By cracking all 3 injector nuts at one time and turning over the engine
> until fuel spills out?
> Or cracking one injector at a time and turning over the engine?
>
> I have read all available tech manuals for Perkins M30 that I have been
> able locate.
> All additional M30 specific information would be greatly appreciated!
>
> Bob Borelli  1995 Perkins M30 onboard #209
> ________________________________
> From: C320-list <c320-list-bounces at lists.catalina320.com> on behalf of
> Douglas Nortell <dnortell at gmail.com>
> Sent: Wednesday, September 30, 2020 4:38 PM
> To: C320-List at catalina320.com <C320-List at catalina320.com>
> Subject: Re: [C320-list] Perkins M30 Injection Pump
>
> Jeff, no bleed screw on the pump. Hand bleed through to the injector. I
> just replaced injectors and had the pump rebuilt. Putting it back together
> wasn't difficult just pay attention to the shut off arm under the pump.
> Rebuild cost was $450. There is good literature on the removal and
> replacement.
> Check your valve adjustment .001/.002 makes a huge difference in
> performance.
>
> Doug
> 94 #38
>
> On Wed, Sep 30, 2020, 1:27 PM Jeff Smith <jeffreyssmith at live.com> wrote:
>
> > Can anyone tell me where the bleed screw (or screws) is located on the
> > Perkins M30 injection pump? I have been bleeding the pump at the inlet
> > location, but I do not think that is completely clearing the pump. I ask
> > because, after installing rebuilt fuel injectors (by a local diesel
> shop),
> > my engine is idling high. It cuts off if I throttle down to the
> recommended
> > RPM, and certainly shuts off if I put it in gear at the minimum RPM
> (1,000
> > for the Perkins). I just spoke to the diesel shop and they said I need to
> > pull the injection pump, they will investigate,  prepare a condition
> report
> > and give me a cost estimate to rebuild.
> >
> > The diesel shop said that I am incorrect in my thought that it is still
> > getting air and that an engine that starts and runs, just not under load,
> > is an engine that probably has an injection pump issue and not an air
> leak
> > issue.
> >
> > So, does anyone know if the inlet screw is the only bleed screw for the
> > pump? Am I correct that the pump is the 4” by 5” (approximately)
> rectangle?
> > Any thoughts regarding my lack of RPMs under load being an injection pump
> > issue?
> >
> > Thanks,
> >
> > Jeff
> > ’94, #121
> >
>