| Author | Message | ||
| Tom Mason (Manasst)
Registered Member Username: Manasst Post Number: 1 Registered: 4-2007 Posted From: 71.31.172.141 Rating: N/A |
i know Diesels are compression, no battery required, but i thought that you at least had to have some switch on. i had just installed new hydraulic fan pump and wanted to just jog the engine a few times. All start switches off. there is a start button in the rear that makes the engine turn over and a toggle to stop it when running. When i hit the start button, i didn't expect the darn thing to start. wasn't sure i had all belts on and hoses tightened. (more on that on another post.) So my question is, why didn't it stop when i hit the toggle and disconnected power. it ran about 5 min while i tried all i knew of to stop it. i assume it ran out of fuel? what did happen? obviously, i'm not a great mechanic. | ||
| clark lane (Bus05eagle)
Registered Member Username: Bus05eagle Post Number: 4 Registered: 3-2007 Posted From: 74.33.56.72 Rating: N/A |
Tom it had to build up the air pressure to shut down i found that out on my Eagle | ||
| David Hartley (Drdave)
Registered Member Username: Drdave Post Number: 755 Registered: 5-2005 Posted From: 72.189.203.211 Rating: N/A |
The fuel rack ( shutdown lever ) should be clamped closed (OFF) when working on the engine. It is spring loaded and would fail (Open) without air pressure on the small chutdown cylinder. These engines (mechanical) are designed to shut down using air pressure on the cylinder. No air pressure no shutdown. You should locate the lever and paint it a bright color, make a small stick or block of wood that will push the lever closed and use it when working around the engine pulleys or underneath. The rear start button is not a "JOG" button, It is a "START" button. Bumping a starter can be rough on the starter but worse on your physical wellbeing if you get tangled in the belts or fan. | ||
| Laryn Christley (Barn_owl)
Registered Member Username: Barn_owl Post Number: 21 Registered: 10-2006 Posted From: 70.110.2.160 Rating: N/A |
"You should locate the lever and paint it a bright color, make a small stick or block of wood that will push the lever closed and use it when working around the engine pulleys or underneath." I love simple solutions. Nice safety tip Drdave. | ||
| Phil Dumpster (Phil_dumpster)
Registered Member Username: Phil_dumpster Post Number: 13 Registered: 5-2005 Posted From: 71.112.89.151 Rating: N/A |
The shutdown lever is located on the governor next to the throttle lever. You'll see a small air cylinder positioned in such a way to push the lever. | ||
| Chuck Lott (Chuckmc8)
Registered Member Username: Chuckmc8 Post Number: 223 Registered: 5-2004 Posted From: 72.152.158.64 Rating: N/A |
-Info that all bus owners need to know-I keep a wooden paint paddle wedged in my rear doors to push the fuel off lever in case I need to shut the engine off b4 the air builds up. I also have a small peice of wood that fits between the air cylinder end and the fuwl lever so that I can block off the fuel, as others have suggesred. I just made a specific "too" for that job. Lastly, dont reach in and push the stop lever with your thumb. I did that (without the big belt on) the little cylinder will extend and take out a corner of your thumb.......(looking at the scar now....) HTH | ||
| Gary Pasternak (Cessna5354)
Registered Member Username: Cessna5354 Post Number: 14 Registered: 2-2007 Posted From: 152.163.100.13 Rating: N/A |
Tom, do not underestimate your self as a mechanic, you are certainly smart enough to ask the correct questions, and really smart to ask the questions within this forum. I feel bad that I take away much more info and experience from those who contribute. This was shut down lever was the first thing a bus mechanic showed me when I got the coach. Now I will paint it, as suggested, as I KRS.... Thanks all, Gary Gary | ||
| R.C.Bishop (Chuckllb)
Registered Member Username: Chuckllb Post Number: 120 Registered: 7-2006 Posted From: 4.240.213.65 Rating: N/A |
Is this "problem" specific to DD or diesels in general (Cummins in my case)? As I have read the board over the years, it amazes me how many things I don't seem experience. Maybe just fortunate...thus far.  RCB '64 Crown Supercoach (HWC) | ||
| Ed Jewett (Kristinsgrandpa)
Registered Member Username: Kristinsgrandpa Post Number: 304 Registered: 2-2003 Posted From: 64.24.209.147 Rating: N/A |
There is no air shutoff on an electronic controlled DDEC engine, only a fuel shutoff, and that is controlled by the DDEC. Somewhere on the coach there is a 12V breaker that provides power to the DDEC, if you have a DDEC controlled coach you should find and mark that breaker. My only experience is with a DDEC II, so I am assuming that the other 3 in the series work the same, since they all have electronic injectors. ED |