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Post by Deleted on Jun 24, 2017 19:13:54 GMT
The starter motor on one of my boats (Perkins P4 engine) seems to be a bit buggered. Sometimes it makes a "eeeooiw" noise while turning very slowly then at second attempt it will usually start the engine which starts very easily in warm weather.
I haven't checked the wiring or battery yet but I wonder if this is a sign of starter needing an overhaul, or rewinding? I'm happy to take it apart and do brushes etc but obviously would need a shop to do rewinding. I don't want it shot blasted...
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Post by quaysider on Jun 24, 2017 19:42:11 GMT
I have nothing to say that can help you mister, but I just wanted to let you know if I did, or know someone who could, I WOULD!
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Post by Jim on Jun 24, 2017 20:07:52 GMT
Did some servicing of old style starters years back, Leyland fg etc. Here's some thoughts....
Is it a separate or combined solenoid? I've cleaned up and or turned over the copper bar. Also as you say renew brushes and clean up the commutator that the brushes run on. I don't know how to check the windings other than continuity, does the insulation break down under load? Is it a cog that shoots forwards to engage with the flywheel ring? If it doesn't engage it can go weeoow. So fettling the solenoid may help. Bit of grease maybe. It can then throw and engage properly.
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Post by Deleted on Jun 24, 2017 21:04:23 GMT
I think its a Bendix type not a solenoid
Odd because I went to start it and it squealed then I did it again a few minutes later and good as new.
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Post by tonyb on Jun 25, 2017 7:40:18 GMT
If it is a Bendix type (inertia) starter then I would take it off and inspect the flywheel teeth. The engine will stop in one of only two positions and inertia pinions are known to burr and wear flywheel teeth. make sure you inspect all 360 degrees of flywheel and look at BOTH sides of the teeth. A small mirror is probably required.
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Post by tonyqj on Jun 25, 2017 8:10:06 GMT
If it is a Bendix type (inertia) starter then I would take it off and inspect the flywheel teeth. The engine will stop in one of only two positions and inertia pinions are known to burr and wear flywheel teeth. make sure you inspect all 360 degrees of flywheel and look at BOTH sides of the teeth. A small mirror is probably required. We had a Moggy Minor many years ago and if the starter just whirred we'd put the car in gear and push it a couple of feet to move the flywheel round to where it still had some teeth 😜 |
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Post by Deleted on Jun 25, 2017 8:26:40 GMT
If it is a Bendix type (inertia) starter then I would take it off and inspect the flywheel teeth. The engine will stop in one of only two positions and inertia pinions are known to burr and wear flywheel teeth. make sure you inspect all 360 degrees of flywheel and look at BOTH sides of the teeth. A small mirror is probably required. We had a Moggy Minor many years ago and if the starter just whirred we'd put the car in gear and push it a couple of feet to move the flywheel round to where it still had some teeth 😜 We had a similar problem with our starter motor. Knocking the area with a hard item usually sorted it. I think it's something to do with ratchet not engaging properly on some older type motors. However, since then I found an electrical connector to it was not very secure. Since tightening it I've not had a problem. Makes me wonder whether bump starting or banging it just improves the contact due to vibration! |
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Post by Deleted on Jun 25, 2017 9:15:52 GMT
Just to clarify the EEEEEOOOOIW noise is the motor not turning not the motor spinning freely.
Its like the pinion has engaged the ring gear too early and overloaded the motor. Only happens occasionally.
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Post by Jim on Jun 25, 2017 9:23:03 GMT
Just to clarify the EEEEEOOOOIW noise is the motor not turning not the motor spinning freely. Its like the pinion has engaged the ring gear too early and overloaded the motor. Only happens occasionally. Ah, soz, thanks for the clarification. That explains it. I miss-imagined the noise😁. I've not heard that noise.😂😂😂 |
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Post by Deleted on Jun 25, 2017 10:50:28 GMT
Yourm're thinking of VRRRRROOOOIWBZZZZ
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Post by peterboat on Jun 25, 2017 11:02:40 GMT
Maybe the electric starter has stopped on a poor section on the armature? we used to clean between the segments with a hacksaw blade so that the brushes had better contact.
Also clean bendix and if I remember lube it with graphite dust, check the bearings as well because excess play really causes problems good luck
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Post by Deleted on Jun 25, 2017 11:41:12 GMT
Maybe the electric starter has stopped on a poor section on the armature? we used to clean between the segments with a hacksaw blade so that the brushes had better contact. Also clean bendix and if I remember lube it with graphite dust, check the bearings as well because excess play really causes problems good luck Thats what I was wondering. I have cleaned the commutator on my electric outboards by putting in a drill and holding fine emery paper to it. The starter on the P4 is a real big beast. |
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Post by tonyqj on Jun 25, 2017 12:09:32 GMT
we used to clean between the segments with a hacksaw blade so that the brushes had better contact. I've done that in the past but modern motors don't give any spare depth between the segments and if you try it you just cut into the windings. |
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Post by Deleted on Jun 25, 2017 12:28:08 GMT
The P4 is a 1950s unit I believe.
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Post by Jim on Jun 25, 2017 12:49:54 GMT
The P4 is a 1950s unit I believe. so probably readily fettled by normal mortals then. Instead of the the current "sealed unit, chuck it and buy the special gold plated one" attitude with modern cars. |
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