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Topic: Sixpack rebuild about to commence (Read 996 times) previous topic - next topic

Re: Sixpack rebuild about to commence

Reply #25 –
Quote from: mkc1962 –
I assume you 2 are having good results with these? air release ok?
I haven't tried using them on our coach, so no direct experience.  If you look at the solenoid control for the air step and footwell cover on your coach, you will probably see some of these bronze filters.  I would guess that they are designed to allow sufficient air flow for this type application.  Like Scott says, the larger the surface area the better (more flow capability).



1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Sixpack rebuild about to commence

Reply #26 –
Agree they are on my step and step slide......ordered a 5 pack of the long ones today, no doubt better than an open dauber hole.
Mike in AL
2001 U295
8.3 ISC 350
Build 5918

Re: Sixpack rebuild about to commence

Reply #27 –
Front sixpack all done, all working great and no leaks found. They definately needed doing, as you can see by the before picture, the aluminum base had quite a bit of corrosion where some of Orings mate, and I do know a few had slight leaks. One had an intermittent coil, but I had a spare coil. Checked all coils as well as pressure switches.

All parts polished up. Full oring and piston kit installed. New check valves, (thanks for that tip Bruce) Base sealing areas polished with Dremel buff pads to remove any scratches or pitting the years of oxidation caused. Coated entire block with several coats of Sharkhide to fill any metal imperfections as well as to protect entire cluster against any future oxidation. Corrosion. Installed the Metal filter stones to the inevitable Dirt dauber exhaust homes....and by the way they exhaust just fine. That tank that you have to take out to access , pulled the bungs an rinsed out quit a bit of that white dust, then sanded the exterior rust from it and gave it a nice coat of primer n black paint. Yeah know it has nothing to do with the 6 pack but as it was out why not clean up....still want to do the other two tanks and try to get rid of as much as that old white dryer dust as possible.

While way up in there also replaced the long pneumatic cylinder that handles the front step cover.....gonna post some separate details on that as what I found for a replacement works great...it was leaking so bad I had to cut its air last year and Just not use it.

Not a hard job at all this sixpack business other than the contorting one has to do to get to it....front one is done and behind me, now to make time and do the rear.





Mike in AL
2001 U295
8.3 ISC 350
Build 5918

Re: Sixpack rebuild about to commence

Reply #28 –
Looks good,where do you get your blue rags from,mine are running out.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: Sixpack rebuild about to commence

Reply #29 –
Quote from: John44 –
Looks good,where do you get your blue rags from,mine are running out.

Grainger, but have not bought any in a VERY long time. Probably near a decade.
Mike in AL
2001 U295
8.3 ISC 350
Build 5918

Re: Sixpack rebuild about to commence

Reply #30 –
Where did you buy new check valves?
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Sixpack rebuild about to commence

Reply #31 –
Quote from: craneman –
Where did you buy new check valves?

The Place BBeane recommended....but really did not see a darn thing wrong with the ones I pulled out, other than they were dusty.

Quote from: bbeane –
You can get those check valves from Northwest RV Supply | Eugene, Oregon and most other HWH parts.
Mike in AL
2001 U295
8.3 ISC 350
Build 5918

Re: Sixpack rebuild about to commence

Reply #32 –
Quote from: John44 –
Looks good,where do you get your blue rags from,mine are running out.
David those are blue surgical towels it looks like. Maybe Daisy can get you some from the hospital but on second thought never mind that would get her in hot water. I'm sure you could find them online though just do a search for surgical towels.
Excellent rebuild on the six pack and thanks for documenting it. I didn't pull my block off just replaced each one one at a time from under but when doing the rear I'm going to take it off.
'99 U320 40 WTFE
Build #5462,
1500 Watts Solar 600 amp Victron lithium
2012 Jeep Grand Cherokee Overland Hemi
Instagram bobfnbw
Retired

Re: Sixpack rebuild about to commence

Reply #33 –
Quote from: Journey, Roam, Explore –
David those are blue surgical towels it looks like. Maybe Daisy can get you some from the hospital but on second thought never mind that would get her in hot water. I'm sure you could find them online though just do a search for surgical towels.
Excellent rebuild on the six pack and thanks for documenting it. I didn't pull my block off just replaced each one one at a time from under but when doing the rear I'm going to take it off.

I thought about not removing, but it appears that the very top edge of my block had some massive amounts of aluminum oxidation and it did....dissimilar metal oxidation had about 1/4" thick and about 2" wide section of that block bulging outward and would only continue to get worse. I ground all that down which took a large chunk out of that block, and of course coated everything with the SharkHide metal treatment so it wouldn't happen again. Also the mating surface where the 2 Orings for the solenoids had quite a bit of oxidation (metal pitting) on several of the solenoids that took some time with a dremel buff to get out. I could have never done that with the block in......Ive read quite a few posts, here and other forums where even after a somewhat meticulous build they have small leaks.

Ive been building carburetors since I was 10 years old, teaching and experience has shown that if you take the time to get parts to perfection, you have a perfect outcome everytime....These 6 packs, like a carb, is a precision piece of instrumentation when it comes to mating surfaces. There are lots of things that if not 100% perfect, you might get it back in and then have to pull it again. I did not want to have to pull this again.

Yes the ones Grainger and a few others offer are in fact repurposed surgical towels....a fitting repurpose as we are conducting surgery on whatever, this morning it happens to be a pair of brake calipers
Mike in AL
2001 U295
8.3 ISC 350
Build 5918

Re: Sixpack rebuild about to commence

Reply #34 –
Quote from: mkc1962 –
Agree they are on my step and step slide......ordered a 5 pack of the long ones today, no doubt better than an open dauber hole.
I would be interested in knowing the degree of silencing that it provides? Since I still have a leak every couple days my system lets out air to level and it can be quite loud. I saw in the specs of one that it was a 20 decibel decrease, well that sounds like a lot but do you hear much of a difference when letting air out?
'99 U320 40 WTFE
Build #5462,
1500 Watts Solar 600 amp Victron lithium
2012 Jeep Grand Cherokee Overland Hemi
Instagram bobfnbw
Retired

Re: Sixpack rebuild about to commence

Reply #35 –
Quote from: Journey, Roam, Explore –
I would be interested in knowing the degree of silencing that it provides? Since I still have a leak every couple days my system lets out air to level and it can be quite loud. I saw in the specs of one that it was a 20 decibel decrease, well that sounds like a lot but do you hear much of a difference when letting air out?

Yes it does seem a bit quieter, but if the affect is slower that I am not noticing....I didnt do it for anything but to protect those ports from the Dirt daubers....and though they were not plugged, I pulled about a dozen nests off while up in that area of the coach, just not in THOSE ports, this time.
Mike in AL
2001 U295
8.3 ISC 350
Build 5918

Re: Sixpack rebuild about to commence

Reply #36 –
Nice job. For what ever reason when ever I rebuilt mine ( it was working good) one pressure switches on the front failed. They are available at Napa. Also be sure to cover the connections with a removable sealant if they get wet and short the do crazy things. I had this happen to me in a heavy rain.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Sixpack rebuild about to commence

Reply #37 –
Quote from: bbeane –
Nice job. For what ever reason when ever I rebuilt mine ( it was working good) one pressure switches on the front failed. They are available at Napa. Also be sure to cover the connections with a removable sealant if they get wet and short the do crazy things. I had this happen to me in a heavy rain.

I keep several tubs of dielectric grease about.....I use that Sh#% on everything I work on, helps keep moisture out of connectors.
Mike in AL
2001 U295
8.3 ISC 350
Build 5918