[C320-list] Perkins M30 Injection Pump

[Bob Borelli]

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
>