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Old 02-06-2015, 08:29 AM   #1
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C 13 Intake Valve Actuator Replacement

I just took my C13 to Holtcat of Fort Worth after having the Check Engine light come on more frequently, and with a consistent pattern.

Under 90%-plus load for more than ten seconds, after at least thirty minutes of driving, the light would illuminate. I noticed no degrade in power, and dutifully copied the fault codes after each occurrence. The codes pointed to incorrect operation of two valve actuator solenoids.

'Turns out, I had three that were sticking and a bad pressure sensor in addition to that. Holt charged me $1,400 to replace all six solenoids, whose design has been identified by Caterpillar as deficient. They explained that it's not really a "recall," but termed a "product improvement." That's Caterpillar's way of saying, "You pay for this."

Not to whine: these valves are just $85 apiece, which seems more than reasonable, given their design. Since all of us incur a little more labor gaining access compared to tractor rigs, I had them "bundle" replacement of all six actuators -- they are sold in pairs for $170 -- into a single operation.

The foreman raised an eyebrow at my contention that I didn't suffer a derate. After all, I've had my C7-powered Fleetwood derate, and it was nothing short of dramatic. According to him, the C13 derate is automatic with those fault codes. Indeed, the rig performed differently on the ride home, accelerating up some hills that it lagged albeit only slightly on during earlier trips. Not a huge amount of difference, but detectable.

So, C13 owners might not be aware of a minor power loss in the wake of having valve actuator fault codes registered, during operation. If your engines have a history of occasional actuator-related faults, now might be the time to get these improved solenoids installed.
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Old 02-06-2015, 11:34 AM   #2
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Out of curiosity, where is the Ft Worth facility? I used the one on Loop 12 and they were having tech/labor problems so last time I went to Industrial Power in Irving. I want to use CAT for a couple of things but need a new location I think.


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Old 02-06-2015, 11:52 PM   #3
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What year and model is your motorhome?
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Old 02-07-2015, 06:00 AM   #4
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Holtcat

Quote:
Originally Posted by Duoglide1 View Post
Out of curiosity, where is the Ft Worth facility?
It is on SW Loop 820 just north of where it turns to the north, but still south of Carswell.

Eric is the shop foreman, held off on fitting me in until they cleared the schedule of trucks; then, I was in and out.

Slemnah, we've got a 2007 Patriot Thunder Winchester III. It was an inactive rig during its early life -- warning to all who worship at the altar of low mileage -- and we're paying for it now.

Photo: In the middle of 3,200 mile Christmas trip this year, anchored in southern Virginia.
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Old 02-07-2015, 06:32 AM   #5
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Beautiful rig, I have a 2005 Safari Panther and bought mine with 42k on it. Currently in it in Tucson.
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Old 02-07-2015, 11:22 AM   #6
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Thanks for the info. Holt's website is hard to decipher when looking for a truck shop. The one on Walton Walker has issues right now. I like Industrial Power in Irving but they are not an authorized CAT shop.


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