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oil leak ISM 450

good afternoon everyone,
I have an oil leak on the forward part of the engine coming from a rubber grommet for a wire bundle. It's just below the valve cover.
I think the oil is making its was down the protective sleeve for the bundle and coming out just above the starter and "almost" dripping off the starter underneath. I have not seen it drip yet.
Does anyone know what these wires are for and how deep into the engine do they go?
How difficult would it be to change this grommet?.
Frank & Daisy
NO LONGER  "looking for the perfect Foretravel
36' or less non slide preferred."  She has been found and is ours.
2003 U320 36' non slide  Unit 6103
Cummins ISM 450
Allison 4000MH

Re: oil leak ISM 450

Reply #1 –
see original post
Frank & Daisy
NO LONGER  "looking for the perfect Foretravel
36' or less non slide preferred."  She has been found and is ours.
2003 U320 36' non slide  Unit 6103
Cummins ISM 450
Allison 4000MH

Re: oil leak ISM 450

Reply #2 –
Looks like the "O" rings that seals off the bulkhead fitting to the head is in need of replacement. Those wires are what  transport the signal from ECM to injector  and makes the injectors open. This is not a big job to DIY.  While you have the valve cover off you might think about checking your rocker arm/ valve clearance.  Someone has recently done the same thing and posted pics. I'll look around and see if I can find the thread.

Mike

Here you go Part Number Collection

Pamela
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: oil leak ISM 450

Reply #3 –
[threads merged]
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: oil leak ISM 450

Reply #4 –
There was a thread on this that I can't find. It gave the part number of the grommet and I ordered one. I will try to find my receipt for it.

found it

2002 U320 ISM Oil leak repair
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: oil leak ISM 450

Reply #5 –
My original problem was the ear on the round electrical plug would not engage..Changed Orings 2 times and worked for a minute.. I ordered the round plug and a special tool to remove the Pins on the plug and replaced with the new plug... tedious.. did 1 pin at a time so as to not get it wrong and It worked.. I started working and went Right to left with the pics.. then the phone started ringing off the hook as soon as I was about 5 pins in... turned it off after the 5th call... Always happens when I am busy!!

You could caulk the oring from underneath the plug and seal it up.. I think.

In case you need it. I have the pin remover screwdriver also if needed

086-0059-000
086-0059-000 ITT Cannon | PEI-Genesis

Re: oil leak ISM 450

Reply #6 –
LT.,change that signature to your coach,put in all the info you can so we know what you have.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: oil leak ISM 450

Reply #7 –
thanks everyone for your input.
David thanks for your offer.

it's been a long time that a had to replace a "canon plug".  I have an appt on Monday with Cummins to see what they say. My biggest worry is taking the valve cover off. Do I need a new gasket? is there anything else that needs to be removed?

I will update my signature soon.

this is for a 2003 U320 unit(build) 6103.  FTC  3  3603  SPEC  U320  E31.  Cummins ESN 35059943.  Allison  6610100108  4000MH.

thanks again, frank
Frank & Daisy
NO LONGER  "looking for the perfect Foretravel
36' or less non slide preferred."  She has been found and is ours.
2003 U320 36' non slide  Unit 6103
Cummins ISM 450
Allison 4000MH

Re: oil leak ISM 450

Reply #8 –
My valve cover gasket was original and it was in perfect shape.. I think I have an extra I had bought when my original thought was a leaky gasket..

Re: oil leak ISM 450

Reply #9 –
The "trick" to the orange rubber seal is to not overtighten,valve cover should not touch the head.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: oil leak ISM 450

Reply #10 –
Quote from: John44 –
The "trick" to the orange rubber seal is to not overtighten,valve cover should not touch the head.

ISM valve cover gasket has grommets inside that the bolt goes through that will not allow the compression of the gasket or the cover to compress to far. Careful when removing.. bolts, washers, Grommets and brackets are on some of the bolts holding harnesses and supports.