It was easy to get the fuel feed line from the tank and return line from the pump back to tank. The harness was long enough to reach the pump.
#Fass lift pump install drivers
I did what you suggest and put the wiring relay in the front drivers side compartment and I was able to get the ignition sense wire. I had some heavy 1 1/2" square tubing that I mounted across toward the front using heavy metal screws, I mounted two pieces of tubing to give a decent support and flat spot for the bracket to mount to. Previous owner put in a shelf above the propane tank for storage, which comes in handy and I decide to keep but had to cut out a portion in order to change fuel filters in the FASS system. The propane tank is mounted in the same bay. How do you secure the fuel tank panel for filter changes? I'm thinking a latch of some kind (currently riveted at the bottom).īoth my panels on either side of the fuel tank can lift up and I can fill from either side. On the ignition side of the fuse panel there's an empty slot labeled "Reserved" but needs a little more research. Was there enough room to mount it on the frame in front of the tank? How difficult was that (after the side panel was lifted)? With the LH power bay right there power wire should be (relatively) easy vs routing a wire (crawling around) from battery bay to primary filter location. I like the push-fuel concept of having the FASS pump at the tank vs the suck location by the primary filter. That got me to thinking about my slow drip lift pump - if it has a slow drip under pressure it's probably sucking air during operation.
Sure enough, the fuel pressure gauge is worthless as, after initial start, the CAPS pump by design sucks fuel from the tank. I ended up mounting it down by my left knee under the dash. I tried to mount the gauge in the dash up by the light switch but working in that space is a nightmare. Used the original fuel hose from the FASS to back, I bypassed the original lift pump (put a union to tie the hoses together).įirst step was the fuel pressure gauge (GlowShift). I mounted mine up front near the fuel tank, made the wiring and return hosing easy. Pretty simple decision really.ĭo your own research, make your own decisions.
#Fass lift pump install install
New OEM pump is $400, FASS install is ~$900 +/. Thought about it for a couple months and then decided to install the FASS. Not leaking one day, took it for a drive and crawled under to do some work and found it leaking. I knew of this problem and monitored my lift pump looking at it everytime I crawled under the coach and looking for tell tale signs of a leak > fuel on the ground. This is a $6K repair unless you do it yourself and still costs $$$. The CAPS failures are likely caused by the lift pump starting to leak while pumping fuel for ~30 seconds and then while the engine is running the leak sucks air. Over the last couple years I've noticed more and more posts on the lift pump failure (leaking) and replacement and also an increasing number of posts on CAPS failures. You will get lots of advice, do some research. I have an 8.3 mechanical caps pump and mechanical lift pump.
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