Recent Posts

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Technical Support / Re: C9 400 HP Excess oil from breather tube
« Last post by Frank Bergamo on June 19, 2024, 03:36:14 AM »
Overfilled crankcase will push excess out breather tube. Next oil change, put the exact amount of oil that the spec calls for, then check dip stick and mark the level with a file to calibrate dip stick. It is common for the dipstick to not be accurate, as the dipstick is installed by the coach manufacturer, not the engine manufacturer. Hope this helps.
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Technical Support / Re: Air Solenoid and Fuel Line Replacement
« Last post by Michael Turnipseed on June 19, 2024, 02:42:45 AM »
Kaiser Brake and Alignment   
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Technical Support / Re: Air Solenoid and Fuel Line Replacement
« Last post by Michael Turnipseed on June 19, 2024, 02:13:43 AM »
Shop that knows the system, most of the buses of this era were built in Eugene / Coburg. Can’t find any shop in the area I’m comfortable with.
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Technical Support / C9 400 HP Excess oil from breather tube
« Last post by Bryan Beamon on June 19, 2024, 01:03:23 AM »
After a 160 mile drive today found oil on ground from the breather tube and minor amount on the tow shield. Checked oil level and it was 1/4 inch over filled but had been that  level since last oil change at 1000 miles ago. Coolant level was full and hydrolic  fluid level full. Any ideas as why the oil leak from the breather tube was excessive?
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Technical Support / Re: Fresh Water System
« Last post by Scott Shearer on June 19, 2024, 12:29:29 AM »
Bill,

Assuming that your coach is equipped with a power water hose reel you won’t have a standard city water connection with a built-in check valve. Open the access door inside the wet bay, look to the right of the hose reel and you should see the freshwater check valve. I’ve attached an image showing the location on our PT.

Another thing to consider, if your coach has the full version Aladdin (shows the status of the freshwater tank) the autofill function uses the tank fill level to know when to shut off. Are your tank level readings accurate? If not, you will need to recalibrate your tank levels. When using the autofill, you should see an ‘AF’ indicator on the freshwater status line, does the freshwater tank continue to fill after the ‘AF’ indicator turns off? If so, then your problem is likely as Eric explained.

-Scott
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Technical Support / Re: Fresh Water System
« Last post by Eric Maclean on June 18, 2024, 09:19:41 PM »
Bill
Sounds like two separate issues
1) there is a check valve and pressure regulator built into  the city water connection it sounds like the check valve is failing to prevent back flow.

2) the red hat valve is responsible for filling the fresh water tank if it doesn't close the tank will over fill and water will run out the overflow/vent

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Technical Support / Re: Fresh Water System
« Last post by Bob Disney on June 18, 2024, 06:27:42 PM »
check the valves to the outside shower
if you were using it and shut down the water at the shower head instead of the hot/cold valves you could be back flowing through your system
Same with your shower head on your inside shower IF there is another shut off valve inline on the line after the faucet nobs
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Motorhomes and Tow Cars / 2006 Beaver Laguna Monterey IV
« Last post by T.C. O’Gorman on June 18, 2024, 05:21:39 PM »
57K or Best Offer
Our loss is your gain.  Due to life changing circumstances we need to sell this is an extremely nice riding coach. We only purchased it in 2022, we have decided that we just do not utilize it. New tires installed 09/22. New Transmission Control Module and step Control Module 11/23. New Batteries.

CAT® C-9 400 HP Engine and Allison® 3000 MH 6-Speed Transmission with Electronic Shifter; 1,100 lbs./ft. Torque Max. Net @ 1,400 RPM; 537”/8.8L Cu. In. Displacement Dual Leveling (Air/Hydraulic) Air Leveling


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Technical Support / Re: 2006 Thunder
« Last post by David Ciotti on June 18, 2024, 11:45:24 AM »
On my 2002 Marquis the porch light problem was the switch under the light.  Jumpered the switch and I saw the light!
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Technical Support / Re: 2006 Thunder
« Last post by Scott Shearer on June 18, 2024, 11:10:44 AM »
Paul,

The step/grab handle lights & porch light are on different circuits.

The porch light and map lights are on the same fused circuit, it is labeled MAP LTS.

Do your map lights work? If not, perform the following.

Turn the ignition to run and the porch light on.

Front Run Bay.

PCB14, check the 15-amp fuse labeled MAP LTS, the associated red LED should be illuminated (if the ignition is in the run position), if the LED is not illuminated fuse is probably bad. If the LED is illuminated check the connector on the circuit board.

If the porch light still doesn't work check the green LED on PCB1 labeled RELAY OK PORCH LT. If the LED is not illuminated, you may have a bad relay on PCB1. If the LED is illuminated check the connectors on the circuit board.

Please report back your findings.

-Scott
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