Finished Fass Pump Install

[Crop Duster]

I finished the Fass pump install today. Pressure is running 16 pounds at low and high idle. Our old lift pump was leaking a little. Hopefully the new pump will allow the CAPS pump to run for many more thousands of miles. I used the hot wire that was connected to the Sauer Danfoss fan controller to trigger the relay for the new pump. So, now without power, the fan control has defaulted to high rpm. I was unsure before but now I know it was not working. The fan was running WAO all of the time.

One project completed. Now, it’s time to go drain some antifreeze, remove the thermostat housing, and get the fitting welded to it so we can install the wax valve.

I really appreciate everyone’s past posts sharing how you did your install. This forum is invaluable for us do it ourselvers.

[Crop Duster]

In this photo you can see where I plugged one of the lines going to the old lift pump. It’s the bright and shiny plug behind the primary filter. I removed the secondary filter and reinstalled it 180 degrees from original to make plumbing easier. The fitting on the front side used to face the back.

[dons2346]

Looks like a good clean installation, well done.

[bneukam]

FASS Pump, and wax valve are the best two upgrades you can do on these era coaches.
After installing the FASS pump on a 02 ISL the coach ran smoother at low idle, and started much quicker.
Afterwards, while the coach was running I unplugged the FASS and drove around the parking lot and it kept running just fine, so you won’t be stranded, even though I wouldn’t push it very far.
Nice job

[Smitty77]

Hope your travels are smooth sailing. I feel much better having positive fuel pressure feeding the CAPS at all times.

I too, am a fan of our Source Engineering Wax Valve.

And, I replaced the Super Steer Motion Control Units (Which had made an improvement on our coaches suspension 'setting' faster in S curve's back and forth shifts of weight.). With the Source Engineering Comfort Control Valves. The SS MCU's 'check air flow' in both direction. The SE CCV's allow air to pass thru in one direction, and restrict in the other direction. So this ensures the Check Valve is not adding any harshest to the ride. I've seen no reduction in how fast the suspension sets...

Back to your clean install - CONGRATS!
Smitty

[Crop Duster]

Originally Posted by Smitty77

..... With the Source Engineering Comfort Control Valves. The SS MCU's 'check air flow' in both direction. The SE CCV's allow air to pass thru in one direction, and restrict in the other direction. So this ensures the Check Valve is not adding any harshest to the ride. I've seen no reduction in how fast the suspension sets...

Back to your clean install - CONGRATS!
Smitty

Thanks, Smitty. Not familiar with this. So far only a little over 2000 miles on ours and it handles so much better than our Safari. Is there a write up on iRV2 about this?

[BRex45]

It looks real nice. It will be much easier for you in the future too.

[Smitty77]

Hey Barry - Sorry for the delayed response.

Here is a thread, and it has another embedded link to SS MCU's too.

http://www.irv2.com/forums/f115/comf...es-173084.html

If you are good with our coaches handling, leave well enough alone! My DW is terrified of driving on mountain roads (According to her, it's always a 267,008 foot drop, no guard rails, and the passenger seat is cantilevered out over the abyss...). And as the S curves change from left to right back to left, etc., etc. - each time she is positive the shifting of weight from side to side is going to tip us over. (All kidding aside, it is the leaning towards the outside arc that gets to her the most.)

So I did a few things to be sure handling was as good as I could get it, short of Active Air!

1) All axle alignment, which includes checking the road height
2) All bushings were checked for wear, and are in top shape
3) Four corner weight while loaded for travel, and tires manufactures recommended PSI. (+ 10% contingency so I don't need to top off air while traveling.)
4) Went with Road King Shocks in all positions. (If doing to day, I'd add Road Kings to the Steers, and Koni EVO 99's to the Rear and Tag. Or, to save a bit more, I believe 95% of coach owner's would be pleased with the Koni EVO 99's on the Steers, and Koni Adjustable SP3's on the Rear and Tag.)
5) I added SS MCU's and traveled with them for several years. They helped 'set' the coach faster. Not just in S curves, but in strong shifting cross wind change driving conditions - and I'm positive in a emergency maneuver too.
6) When I was talking with Source Engineering about the Thermal Wax Valve, we got to talking about the MCU's we had on. They offered me to try their Comfort Control Valves, and if I did not like them I could return them and I'd be able to put back on the SS MCU's. So I did, and the faster suspension 'setting' was the same. And the check valve only checking in one direction, adds zero stiffness to the ride over say expansion joints, DOT's, pot holes.

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On a different answer, to one you asked on the Cummins section (That I just saw.), we've about 20K miles on our coach since installing the FASS pump.

Best to you and all,
Smitty