| Author | Message | ||
| Buddy Tennison (Buddyten)
Registered Member Username: Buddyten Post Number: 84 Registered: 7-2005 Posted From: 207.68.234.50 Rating: N/A |
Hey Guys and DIY's: The harmonic balancer between the engine and miter box on my 80 Eagle is going out. Is this hard to replace or something a mechanic needs to do? Also, when I cut the key off to the engine to kill it, it keeps running for a short time, usually until I pump the brakes a time or two. I know this thing has a skinner valve on it to cut the engine off. Is this the culprit, and if so, how hard is it to replace and is it a standard part or one that is hard to find? Last question. I am seeing little or no discharge of oil from the slobber tubes on the 8V71. I had understood this is not normal. What should I do to check or correct this, and will this cause an increase in oil consumption? Will it affect the oil pressure? Thanks for all your help? | ||
| Luvrbus (Luvrbus)
Registered Member Username: Luvrbus Post Number: 898 Registered: 8-2006 Posted From: 74.32.84.228 Rating: N/A |
Buddy, you don't have a harmonic balancer on a 8v71 there is a Morse coupling between the mitre box and engine Jefferson has those with new bolts around 200 bucks not that hard to replace once you remove the mitre box. Jefferson will also have the skinner valve but check your ground at the rear they come loose. Little oil from the air box drains is good your rings are seated now and the check valves are doing their job don't worry about it | ||
| Paul Lawry (Dreamscape)
Registered Member Username: Dreamscape Post Number: 668 Registered: 5-2007 Posted From: 64.40.216.41  Rating: |
Along with what Clifford said on the skinner. It works off air pressure, the higher the better. You need to also make sure you psi is at least 80-90 before it will work properly You might check the rod for movement, it might be sticking. By stabbing the breaks you are just changing the pressure to the valve. I haven't had to replace mine yet, but it looks like it's easy. Or it could be the rod is not pushing on the fuel shut down lever far enough. Do you have a manual? How are your brakes working? I forgot did you switch to spring brakes or keep the DD-3's? | ||
| George M. Todd (George_todd)
Registered Member Username: George_todd Post Number: 1033 Registered: 8-2006 Posted From: 99.184.9.29 Rating: N/A |
Buddy, The shutdown cylinder requires pressure to operate. If you turn the switch off before the air pressure reaches about 80, the engine won't stop. If you have over a hundred, and the engine doesn't stop when the master is shut off, either the skinner valve itself is sticking closed, (holding air pressure) or there is a bind or mis-adjustment between the stop cylinder, and the stop lever. A bad ground in the skinner circuit will cause the engine to stop, not keep running. G | ||
| Luvrbus (Luvrbus)
Registered Member Username: Luvrbus Post Number: 899 Registered: 8-2006 Posted From: 74.32.84.228 Rating: N/A |
A bad ground on a MCI may stop the engine on a MCI but not on a Eagle. That is the first thing I check when a Eagle doesn't shut down and 80% of the time that is the problem. | ||
| david anderson (Davidanderson)
Registered Member Username: Davidanderson Post Number: 256 Registered: 2-2004 Posted From: 66.143.247.224 Rating: N/A |
Clifford is right about that. I'm part of that 80%. David | ||
| Buswarrior (Buswarrior)
Registered Member Username: Buswarrior Post Number: 1869 Registered: 12-2000 Posted From: 174.91.143.169  Rating: N/A |
How is an Eagle wired that it takes power to activate the shut down for the engine? Thanks! happy coaching! buswarrior | ||
| Paul Lawry (Dreamscape)
Registered Member Username: Dreamscape Post Number: 670 Registered: 5-2007 Posted From: 64.40.216.41 Rating: N/A |
You remove the power through the ignition switch, the skinner is N/O. When the circuit is closed air goes to the cylinder. That's how our 01 is wired. That's why Clifford said the ground is so important. (Message edited by dreamscape on June 17, 2010) | ||
| George M. Todd (George_todd)
Registered Member Username: George_todd Post Number: 1042 Registered: 8-2006 Posted From: 99.184.9.29 Rating: N/A |
Well BW, thank you for asking, I was going to bite my tongue and keep quiet. Paul, when a valve is N/O, (Normally Open) it allows air to flow when there is NO current, so air flows to the shutdown cylinder when the master switch is turned OFF, (Open circuit.) When the circuit is CLOSED, (SWITCH ON) current flows thru the Skinner valve coil, which CLOSES the air port, and allows the stop cyl to retract. A poor ground results in an OPEN circuit, which will cause the Skinner valve to allow air to the shutdown cylinder. G | ||
| Paul Lawry (Dreamscape)
Registered Member Username: Dreamscape Post Number: 671 Registered: 5-2007 Posted From: 64.40.216.41 Rating: N/A |
George, That's what I meant, just didn't have it worded properly. My fault. I do know the difference, what a dummy! I'll move on now. | ||
| Luvrbus (Luvrbus)
Registered Member Username: Luvrbus Post Number: 901 Registered: 8-2006 Posted From: 74.32.84.228 Rating: N/A |
A lot of Eagles have the shut down all in one it takes momentary power to stop the reason for the push button or toggle. Find yourself a Eagle with the Parker skinner valve if running pull the ground it will not shut down. | ||
| Buswarrior (Buswarrior)
Registered Member Username: Buswarrior Post Number: 1872 Registered: 12-2000 Posted From: 174.91.145.77 Rating: |
ok, so does it take a shot of power to get a shot of air to shut down the diesel, or does it take an absence of power to get a shot of air to shut down the diesel? I think we can agree that it takes a shot of air, otherwise we'd have a hard time starting it when the air is gone... happy coaching! buswarrior | ||
| Tim Brandt (Timb)
Registered Member Username: Timb Post Number: 537 Registered: 10-2003 Posted From: 66.165.176.62  Rating: N/A |
I always wondered why complicate things with air when you don't need to. On my Flx thewre is a simple 12 V solonoid that operates the shutdown lever and a second one that trips the mousetrap on the blower. If there is a power failure you simply walk back and push the lever manually. To reset it so you can start all you do is tap the accelerator pedal. ANyone care to ventuire a guess as to any advantage adding an air circuit achieves??? | ||
| Buswarrior (Buswarrior)
Registered Member Username: Buswarrior Post Number: 1875 Registered: 12-2000 Posted From: 174.89.174.64 Rating: N/A |
Electric solenoids have come a long way. Back in the day, the air was strong and cheaper to control? I just priced a pull-in/hold-in solenoid for a 2 cylinder diesel in an APU I'm fooling with from Woodward. They want $317 for it... happy coaching! buswarrior | ||
| Tim Brandt (Timb)
Registered Member Username: Timb Post Number: 538 Registered: 10-2003 Posted From: 66.165.176.62 Rating: N/A |
Thanks BW. I can definitely see that with current tech but my Flx is a 1964. Granted the solonoid isn't pull and hold it's just a trigger that pulls when 12v is applied and the mechanical linkage does the rest |
