Quote:
Originally Posted by Tony2Co
4 filters? Are these all fuel filters?
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Yep, see figure 3 on page 6 in the enclosed .pdf.
The easiest way to change the HFCM filter with 4x4 is to use a long 18"-24" extension on a 1/2" ratchet; come at it from behind the xfer case crossmember. Only took me about 5 minutes to take it off and put it back on when I changed out 3 out of four filters a couple weeks ago.
I decided to not change out the aux fuel filter since it seemed to still be flowing well and it's not part of the truck fuel system. The fuel samples in the pic below are, from left to right: aux fuel filter, pre-pump fuel filter (first filter on left), and then the fuel drained from the HFCM. The fuel from the pre-pump and HFCM filters were so clean that I used them to pre-fill the pre-lump filter before re-installing the new filter. Both the aux fuel and pre-pump fuel filters have drains and it's easier and takes less time to drain them both than to drain the HFCM.
Hope this helps.
Al
