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Old 02-22-2018, 04:31 PM   #1
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Tiffin Owners Club
Freightliner Owners Club
Join Date: Mar 2012
Posts: 114
Fuel filter change and lube on RED

I'm sure this dead horse has been beat many times but are there and tricks to changing the fuel filter and separator on the 6.7 ISB. Ordered filters and a new clear bowl and I understand you fill the filters with fuel and replace them. Turn the key on and off to purge air and attempt to start. Freightliner sent me a schematic on the lube point on the chassis. Has anybody ever attempted this? Thanks.

Bill and Cindy 2015 Tiffin 37PA
TOAD: 2002 Honda Accord V-6
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Old 02-23-2018, 01:12 PM   #2
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One of these may come in handy;

We never had to use one when replacing the fuel filters on our RED but had to buy one last year to remove the oil and fuel filters on our Duramax.

We never pre-filled fuel filters (too messy, oil filter yes) but as you said just turned the key on and off for about 30 seconds at a time.
With the two filters on the Cummins it took ours just about 6 cycles and it was ready to go.

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Old 02-23-2018, 01:34 PM   #3
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It helps to have the rear of the Mh higher than the front and less than a full tank of fuel to keep the fuel from running out while you change filters. Whatever you do, do not use a pair of vice grips on the fuel line to stop the flow.
The fuel filter has a cap on it to keep unfiltered fuel out of the filter while you fill it.
If you decide to do the whole thing and change the oil too. I found it less messy to punch a hole in the bottom of the filter prior to removal and let it drain. You have to fill the new one , it holds almost 3 qts..
2018 Allegro Bus 37AP
2014 Phaeton 40 QBH (sold)
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fuel, fuel filter change

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