Recent Posts

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21
Other Systems / Re: HWH front jack seals leak
« Last post by Ken Carpenter on May 20, 2019, 06:53:33 PM »
Here are the instructions on the HWH  site https://www.hwhcorp.com/ml44100bl_chks.html
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Other Systems / Re: HWH front jack seals leak
« Last post by JerryK on May 20, 2019, 06:49:57 PM »
HWH Computer-Controlled 625 series Leveling System. On the cover.
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Other Systems / HWH front jack seals leak
« Last post by JerryK on May 20, 2019, 06:31:50 PM »
Hello I've developed seal leaks in my front jacks, I like to do my on work when possible, but have to admit I know little about the hydraulics system for the slides and jacks. Looking at my manual I think I've isolated the correct pressure valves. I also have worked some hydraulic systems on other equipment and am aware of how to do spacing to remove the springs. My big roadblock is do I have to plug the lines after I remove them and if so do I also have to bleed out the air after reinstall? any help would be greatly appreciated. My coach is an 05 Winnebago Journey 39k with a 350 C7.
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Hey Dave, I've Got a Problem / Re: Hard Starting Cold
« Last post by willsonrick on May 20, 2019, 05:08:13 PM »
Got ya Dave.  Won't be for a few days. Messing with other stuff for the moment.  I have the Racor 790 system now.  When I replaced the old one I also got new fuel line from the filter to the pump.  I had run the bubble test before I replaced that filter. Makes sense to check again

Thanks,will let you know.

Thanks

Rick Willson, 98 Safari, 3126B
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Hey Dave, I've Got a Problem / Re: How to buy a used Cat Diesel Pusher
« Last post by David.e.atherton on May 19, 2019, 06:06:08 PM »
Dmevis, guess it your call what to look for engine should be a C-7 330 hp. The units have
been selling for around $ 55,000 to $ 65.000. The only problem the builder had removed the
secondary fuel filter for around 4 years ( reason rather not bash the builder ) think your
motorhome your buying should have both primary and secondary fuel filters . By having
the secondary fuel filter removed your fuel system is not protected with engine ECM whick
Is a big concern. Caterpillar requires a two micron fuel filter at the secondary fuel filter.
Ask Dave, Dave Atherton Retired Cat Mechani
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Hey Dave, I've Got a Problem / Re: Hard Starting Cold
« Last post by David.e.atherton on May 19, 2019, 05:53:56 PM »
Willsonrick, no a code reader would not pick up on your problem. First question, do you
have a Raycore water/fuel filter setup with the plastic site tube alongside side the water
Filter. If answer is yes this is the first area that would allow entry of air. This has been a
Low power caused air entry at this water/fuel filter. Next place, return fuel pressure regulator
which is located on back of engine head. Remove the fuel return line from regulator and
Put a piece of clear plastic hose from hardware store connect plastic hose to fitting on the
regulator and other end into a gallon container. Have someone start engine and see if air bubbles are present. Note: hold steady foot feed for two minutes at steady speed and do
not speed up and down. Than go to 1/2 of speed control and again hold steady. Than last
Go to 3/4 or high idle and again hold steady. Let me know the results.
Ask Dave, Dave Atherton Retired Cat Mechanic.
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Hey Dave, I've Got a Problem / How to buy a used Cat Diesel Pusher
« Last post by dmevis on May 19, 2019, 11:43:00 AM »
Hello.  I am an experienced RV'r, but know nothing about diesel pushers.  I am considering a 2006-2007 Cat powered Winnebago.  Can you suggest what I should look for, and or do, to try to ensure there are no problems with a used diesel pusher?

Given that it would be 12+ years old, what would you recommend should be done to it?
Should I take it to a Freightliner dealer to have it checked out?  About what would that cost?
Should I take it to a Cat dealer to have it checked out?  About what would that cost?
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Hey Dave, I've Got a Problem / Re: Hard Starting Cold
« Last post by willsonrick on May 19, 2019, 07:42:17 AM »
Thanks Dave.  Are there any prime suspects to check?  I can inspect for obvious leaks but are there any internal points of failure like Check valves or similar?  Will some thing like this throw a code to a Cat e reader?

Thanks again

Rick Willson
29
Hey Dave, I've Got a Problem / Re: Hard Starting Cold
« Last post by David.e.atherton on May 18, 2019, 08:21:18 PM »
Willsonrick, what things sound like you have a air leak on the suction side of your fuel transfer pump causing your problem along with the smoke. Durning shut down with small air leak would
Break fuel suction, your fuel rail is charged with diesel fuel and engine will start than shut
down because your fuel transfer pump lost prime turning engine over fuel transfer pump again
would pickup fuel and start along with smoke which is caused from air in system.
Ask Dave, Dave Atherton Retired Cat Mechanic
30
Hey Dave, I've Got a Problem / Re: Hard Starting Cold
« Last post by willsonrick on May 18, 2019, 09:01:26 AM »
Hi again Dave,

I thought This problem was whipped, BUT.  I haven't really been using the coach much the last month or so.

I had the coach out the local CAT dealer to get the valves adjusted and the codes cleared. According to the tech no codes reappeared on the CAT E reader. 
I brought it home and it sat for a couple weeks.

Tried to start it and it went back to the same old problem.  First it fired right off, then died.  Then took about 45 seconds on the starter to fire and run.  It had a slight but noticeable surge for about a minute then ran smooth.   There was also white smoke. I let it run for a awhile and then shut down and restarted. Absolutely Normal. Started right away, no issues.  I did the flash codes again and got a 15.
At no time during all of this did the check engine light come on except at start.

I seem to recall that on my first Safari with the 3126  that I had a problem with starting  and I ended up replacing the IAP valve itself.

  It seems to me,  That it might be sticking somewhat when I leave it sit for a while.   Frequent operation it seems to be normal.   It would shock me to be right, but I figure you can steer me in the right direction.

Thanks in advance

Rick Willson, 3126B, 98 Safari
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