Ask Dave

If you would like to submit a question to Dave Atherton, you will find a link in the members only section of the BAC Forum.  Join the Beaver Ambassador Club and you can submit any question relating to your Beaver Coach to the Beaver Forum community.”

You will find the BAC forum here    BAC Forum

Please note; the Ask Dave area is for questions about Caterpillar Engines only, questions on other subjects should be asked on the BAC Forum.

Questions for Dave Atherton.

43 item(s) found

Posted 4 months ago

Question: Dave, I own a 2002 455 hp Beaver PT, C12 and recently got an oil sample run at my...

 Ask Dave / 94 views

Posted 4 months ago

Dave worked for Caterpillar as a CAT heavy equipment diesel mechanic. Following retirement from CAT he established Dave's Diesel Diagnostics....

 Ask Dave / 76 views

Posted 4 months ago

Question: What Fuel Transfer Pump is needed to maintain constant fuel flow and pressure on Cat HEUI (Hydraulic/Electronic Unit Injector)...

 Ask Dave / 78 views

Posted 4 months ago

Question: Do all Cat Engines of a given type, e.g C-12, use the same components?   Dave's Answer: Cat builds...

 Ask Dave / 73 views

Posted 4 months ago

Question: I have a 1996 Beaver Patriot Cat 3126. It has a Winn Coleman fuel system. The glass bowl is...

 Ask Dave / 67 views

Posted 5 months ago

Question: We recently purchased a 96 Patriot 33'. As I was going thru the previous owner’s paperwork I noticed he...

 Ask Dave / 86 views

Posted 5 months ago

Question: I have a 2006 Monterey Laguna IV with a Cat C9. I’ve had a few recent events where while...

 Ask Dave / 84 views

Posted 6 months ago

Question: I'm having some overheating issues with my Cat 3126 in a 98 Monterey with 6 speed Allison tranny. We...

 Ask Dave / 91 views

C9 Engine Surge

Popular 

Posted 8 months ago

Question: Cat C9 engine, 2007 Beaver Contessa. Our engine causes our RV to shudder whenever even slight upgrades are attempted...

 Ask Dave / 119 views

Posted 8 months ago

Question: 1999 Cat C12: On rare occasions, usually upon hard acceleration the engine will blow heavy black smoke and will...

 Ask Dave / 136 views

Posted 12 months ago

Question: My assumption was the CAC cooler would be able to hold a charge of air pressure for several minutes...

 Ask Dave / 153 views

Muffler Change

Popular 

Posted 12 months ago

Question: I have a 525 hp C13. The muffler (CAT part# 261-6861) is shown as a catalytic muffler. What would...

 Ask Dave / 157 views

Engine Selection

Popular 

Posted 12 months ago

Question: We are looking to upgrade from our 1997 coach with a 3126 engine. I am considering a CAT C12...

 Ask Dave / 152 views

Posted 12 months ago

Question: We have a 2007 Contessa with a 400hp C9 (ser# 9DG08521) that has 162000 miles on it. During our...

 Ask Dave / 156 views

Posted 12 months ago

Question: I believe I saw a comment from you that one should always change the boost pressure regulator when changing...

 Ask Dave / 167 views

Posted 1 year ago

Question: I have  a 1998 Beaver with a CAT 3126B. Do you had any comments or opinions on the CAT...

 Ask Dave / 255 views

Posted 1 year ago

Question:  Dave, Short of purchasing a Cat data reader which is very expensive how does an owner/operator find out which...

 Ask Dave / 294 views

Posted 1 year ago

Do you have an oil sample analyzed at each oil change? If not, the following may change your mind. An...

 Ask Dave / 260 views

C12 ECM Upgrades

Popular 

Posted 2 years ago

Question: I have a 2000 Beaver Marquis with the CAT C12 with 58000 miles. I am wondering would I benefit...

 Ask Dave / 259 views

Posted 2 years ago

Question: Dave, in your forum post, you made mention of alternatives to the hard to get hydraulic fan. Could you...

 Ask Dave / 237 views

Posted 2 years ago

Question: Hi Dave, A week ago my engine began to be harder to start and made a white smoke. I...

 Ask Dave / 273 views

Posted 2 years ago

Question: 1988 Beaver C12 425 hp. I was having low power issues and noticed sediment and cloudy fuel in the...

 Ask Dave / 255 views

Posted 2 years ago

Dave, Should I use starting fluid when my engine doesn’t want to start?   Dave’s Answer: Recently I was contacted...

 Ask Dave / 301 views

Posted 2 years ago

Question: I have been told by a Cat mechanic to change the oil in our C 9 400 hp every...

 Ask Dave / 448 views

C12 Won’t Start

Popular 

Posted 2 years ago

Question: The starter cranks my C12 with no problem but it won’t fire. What could cause this?   Dave’s Answer:...

 Ask Dave / 803 views

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