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Date Posted: - Sunday - 10/23/11 - 3:53pm
Author: Greg Gisler
Subject: Engine Belts

Does anybody out there know the size of the perkins 4-107 belt? Mine broke on the way out of the dock yesterday.

Thanks,
Greg

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Replies:

[> 4-107 Belt -- Mark AEOLUS M31, - Tuesday - 10/25/11 - 5:37pm

Hey Greg, I finally remembered to look at my belt. I run a "Dayco Gold Label" It's a Cog-Belt number AX38 Chek Mate. Mine runs around the original alternator, water pump, and engine pully.


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[> 4-107 Belt -- Greg Gisler, - Wednesday - 10/26/11 - 11:48am

Thanks,
Is there anything I should do other than put the new belt on? First time I have ever had a belt break on any engine I have had?


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[> [> 4-107 Belt -- Mark AEOLUS, - Wednesday - 10/26/11 - 6:34pm

How old was the belt that broke? Was it checked or worn bad? Had it been sitting for a long time without running? Mine usually last a long time.


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[> NOT belt -- Greg Gisler, - Monday - 10/31/11 - 10:20am

SO, I was told by a friend sailing with me that day that the belt had broken, (sure sounded like it to me, and he should know). I went to the boat the next day to gather the pieces and there the belt was all in one piece right where it should be...my question now is have I screwed up my engine? There was a loud sound like a belt hitting the side of the sink enclouser right be fore it died and now no matter what I do I can't get it started, I am very familiar with diesels so this is throwing me for a loop, any suggestions are greatly appreciated.

Wanting to go sailing w/o a tow,
Greg
Water Lilly
Mariner 31 #121


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[> [> Motor not belt -- Mark AEOLUS, - Monday - 10/31/11 - 3:47pm

Hey Greg, sorry to hear it's not as simple as a belt. Any other signs before the clunck and the engine dying? If you don't get a lot of response here try this forum, some great folks; http://www.cruisersforum.com/ What does the engine do now? Did you notice the temp when it happened?


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[> [> More info please -- Paul M31 #106 NJ, - Monday - 10/31/11 - 9:49pm

When you say loud noise - do you mean there was a loud noise and you turned off the engine or did it die (instantly or eventually) as when the noise appeared/ occurred?

Was the noise a quick but random "slapping" sound or more of a banging/thumping sound and if so, did that bang or thump follow the rithm of the rpm's you were running at the time?

Is there a line, rope, ribbon, hose, whatever that can have gotten caught in the pully system and wrapped itself to stop the engine?

Are all the pullies still in the right place, all bolts still on them?

Is there oil (more than usual) in the pan/ in the bilge - what color?

When you say you can't start it, do you mean it turns over but won't fire or you turn the key and there is...

1) nothing...
2) a distant "click", but nothing else happens
3) a loud click and a buzz but nothing happens (maybe some smell of electrical burning)
4) the starter whirls loudely but it doesn't turn over te engine
5) the starter clicks, engages and turns over the engine, but it just cranks and cranks..
6) Engine cranks and sputters but won't quite start up

There's a lot we can discern from our armchair positions, if we get the information to digest...

Let us hear more...


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[> Engine -- Greg Gisler, - Wednesday - 11/ 2/11 - 11:10am

When you say loud noise - do you mean there was a loud noise and you turned off the engine or did it die (instantly or eventually) as when the noise appeared/ occurred?
-When the noise occured I throttled back and the engine stopped.

Was the noise a quick but random "slapping" sound or more of a banging/thumping sound and if so, did that bang or thump follow the rithm of the rpm's you were running at the time?

-The noise was a slapping sound equal to the RPM at the time. (which made the belt seam reasonable)

Is there a line, rope, ribbon, hose, whatever that can have gotten caught in the pully system and wrapped itself to stop the engine? Are all the pullies still in the right place, all bolts still on them?


-nothing noticable, and all of the pullies still appear to be in there normal places, but I will have to double check and get back to you.

Is there oil (more than usual) in the pan/ in the bilge - what color?

-I will check and get back to you.

When you say you can't start it, do you mean it turns over but won't fire or you turn the key (yes, turns over but won't fire) and there is...

1) nothing... NO
2) a distant "click", but nothing else happens NO
3) a loud click and a buzz but nothing happens (maybe some smell of electrical burning)NO
4) the starter whirls loudely but it doesn't turn over te engine NO
5) the starter clicks, engages and turns over the engine, but it just cranks and cranks.. YES
6) Engine cranks and sputters but won't quite start up NO

Thanks, I will check on the other two things and get back to you.

Greg


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[> [> Kill cable -- Paul M31 #106 NJ, - Wednesday - 11/ 2/11 - 5:05pm

If the engine turns ove but won't start, there is a chance the kill cable (which you didn't use to stop the engine) has been compromised.

On my engine right now, each time when I pull the kill, I have to manually push it back into the "run" position - under the expansion tank, next to the HP injector pump is a lever that (normally) returns to "run" when you push the kill cable back in - on mine the spring (I think) is shot and it won't do that anymore.

Also, on my engine, the kill cable runs over the top of the engine (from the cocpit panel) and bends around the top rear of the expansion tank (where the coolant fill is located) and runs from there to the kill mechanism.

In your case (a long shot here) if the kill cable came loose it may have been slapped around a while in the engine compartment and the engine may have been in the process of shutting off when you did so manually. Then, if you were to try and start it, it would just turn and turn without catching on.

Check the cable and fuel cutoff mechanism. Be careful - if you were to manually push the mechanism back to "run" position, and started the engine, you may not be able to kill it with the engine stop cable.

You would have to starve it from air by sticking a tennis ball or something else in the air intake.


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