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| Author |
Message |
    
Alan MacDonald
| | Posted on Thursday, April 29, 2004 - 11:24 am: | 
|
My new model 4-108 has a secondary fuel filter with a return line to tank at the location that Nigel Calder shows a bleed nipple alone.
If I open this fitting and actuate the manual lifting pump lever many times will that bleed sufficient air after a secondary filter change? Or do I have to also go through the whole injector pump bleeding procedure outlined in Perkins owners manual?
Thanks for any advice. |
vincent
| | Posted on Thursday, April 29, 2004 - 02:43 pm: |
|
Alan,
I have had to deal with this problem just recently. Chances are, that you can get most of the air out by just undoing that banjo bolt. I changed filters several times (underway!) and did not have to crack the high pressure injector lines. It pays to have an electric fuel pump to make things quicker.
vincent |
roy abrams
| | Posted on Friday, May 07, 2004 - 05:52 pm: |
|
my experiance with perkins 108s (35years)is to bleed the injector pump after replacing any filters not nesassary to bleed the injector pipes. these engines are terrible with the smalest amount of air in system.
You can try just the filter bleed. it may work it will stop running within seconds if any air was still in
when bleeding the pump, pump away for a long time |
poker casino396
Visitor
| | Posted on Monday, March 06, 2006 - 02:32 pm: |
|
poker casino poker 391 |
Dwight Brooker
New member
Username: sailmaster
Post Number: 2
Registered: 05-2006
| | Posted on Monday, May 22, 2006 - 02:49 pm: |
|
It is usually better to bleed from the exit to the injector pump instead of the return line. Then for all the time it takes follow the system to the lower injector bleed then the upper. After the air has stopped coming out on the top bleed close it then open the first 2 injector lines at the injector and crank the engine until you see fuel come out. Then shut them and start it up. You may have to repeat this. It is easier on your starter if you follow through the entire procedure from the beginning instead of taking short cuts. |
ron o'brien
Visitor
| | Posted on Sunday, November 18, 2007 - 07:48 am: |
|
i've been working on deisels since 1978. i've NEVER had to open injector lines to bleed and is in fact not a good idea. the seats on the lines somtimes will not reseat on the injector leaving a leak. bleed fuel as far as the fuel rail, or fuel galley, in the injection pump and the 2200psi generated by the pump will do the rest. |
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