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Post by Telemachus on May 2, 2020 15:21:20 GMT
Looks quite an old one, newer ones are “black box”, this is “silver box” - although some say silver box is more robust. Anyway, doesn’t look like there is a pulley freewheel. This is what our pulley looked like, although there was a plastic cap covering the front...
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Post by Telemachus on May 2, 2020 15:22:49 GMT
On our one, 2009 vintage, there is a freewheel on the Travelpower pulley. Like a sprag clutch. On ours, it started slipping under heavy load eg when I put the 2kw kettle on. It would cycle as you describe. New pulley required, not expensive at around £35 from Ed Shiers. Been perfect ever since. i think it is highly unlikely to be the Victron. obviously first step is to check the belt tension and for any contamination (oil etc) on the belt. Make sure the correct polyvee section belt has been used. I've read through the posts again and realised I can't be sure whether you mean the pulley(s) on the engine or on the alternator(s)? The freewheels are on the alternator pulleys, not the engine pulleys.
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Post by lollygagger on May 2, 2020 15:23:33 GMT
I asked a question and one second later you'd answered it. Thanks.
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Post by kris on May 2, 2020 15:29:04 GMT
Looks quite an old one, newer ones are “black box”, this is “silver box” - although some say silver box is more robust. Anyway, doesn’t look like there is a pulley freewheel. This is what our pulley looked like, although there was a plastic cap covering the front... Thanks for the reply Nick. It does seem like it’s one of the older models. I’ll check the pulley tmw after I’ve tested the inverter charger. If the victron is okay then it’s definately to do with the belt or pulley and it’s tension. But il post and let you know.
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Post by Gone on May 2, 2020 19:59:20 GMT
Looks quite an old one, newer ones are “black box”, this is “silver box” - although some say silver box is more robust. Anyway, doesn’t look like there is a pulley freewheel. This is what our pulley looked like, although there was a plastic cap covering the front... Big edit. i did not read the previous posts properly, so now realise Nick is saying he does have a freewheel pulley, unlike the op who may not. However if anyone else has a similar pulley the link below may help you to find an alternative on eBay Added - when my pulley seized I replaced it with a zen 5467 to replace a valleo part. According to an interchangeablity chart I have this is compatible with Valeo part 588004 which is what was fitted. Added - This is a freewheel pulley. They either fail by slipping, so unable to get full power from the alternator, or as in my case by seizing up, in which case they tend to unscrew themselves and fly off. This page may help. Look at item 231584 for alternatives to your zen pulley. hc-cargo.co.uk/catalog/p/231584
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Post by Telemachus on May 2, 2020 20:38:10 GMT
Looks quite an old one, newer ones are “black box”, this is “silver box” - although some say silver box is more robust. Anyway, doesn’t look like there is a pulley freewheel. This is what our pulley looked like, although there was a plastic cap covering the front... That looks like a clutch pulley to me. Added - when my pulley seized I replaced it with a zen 5467 to replace a valleo part. According to an interchangeablity chart I have this is compatible with Valeo part 588004 which is what was fitted. Added - This is a clutch pulley. They either fail by slipping, so unable to get full power from the alternator, or as in my case by seizing up, in which case they tend to unscrew themselves and fly off. I wouldn’t describe it as a clutch pulley. To me, a clutch is something that can be engaged or disengaged on command, and when engaged transmits drive both ways. To me this is a freewheel pulley just like on a bicycle. But yes another name for the freewheel bit is a sprag clutch! I’m not sure that it matters too much what it is called, but I think everyone understands “freewheel” but not everyone understands “sprag clutch”! The presence of visible splines is a bit confusing - in fact the splines are only to hold the thing still whilst you tighten/loosen the nut. There is no spline drive and yesq it will spin off if driven wrong way.
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Post by Gone on May 2, 2020 20:42:15 GMT
That looks like a clutch pulley to me. Added - when my pulley seized I replaced it with a zen 5467 to replace a valleo part. According to an interchangeablity chart I have this is compatible with Valeo part 588004 which is what was fitted. Added - This is a clutch pulley. They either fail by slipping, so unable to get full power from the alternator, or as in my case by seizing up, in which case they tend to unscrew themselves and fly off. I wouldn’t describe it as a clutch pulley. To me, a clutch is something that can be engaged or disengaged on command, and when engaged transmits drive both ways. To me this is a freewheel pulley just like on a bicycle. But yes another name for the freewheel bit is a sprag clutch! I’m not sure that it matters too much what it is called, but I think everyone understands “freewheel” but not everyone understands “sprag clutch”! The presence of visible splines is a bit confusing - in fact the splines are only to hold the thing still whilst you tighten/loosen the nut. There is no spline drive and yesq it will spin off if driven wrong way. I already corrected my post. It seems some sellers call them a clutch pulley and others a freewheel pulley. Thinking about it, I shall call them freewheel in future.
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Post by Telemachus on May 2, 2020 20:57:58 GMT
I wouldn’t describe it as a clutch pulley. To me, a clutch is something that can be engaged or disengaged on command, and when engaged transmits drive both ways. To me this is a freewheel pulley just like on a bicycle. But yes another name for the freewheel bit is a sprag clutch! I’m not sure that it matters too much what it is called, but I think everyone understands “freewheel” but not everyone understands “sprag clutch”! The presence of visible splines is a bit confusing - in fact the splines are only to hold the thing still whilst you tighten/loosen the nut. There is no spline drive and yesq it will spin off if driven wrong way. I already corrected my post. It seems some sellers call them a clutch pulley and others a freewheel pulley. Thinking about it, I shall call them freewheel in future. No probs. I think I went the other way from you, the Zen was the original and the new one was a different make, quite probably Valeo. I’ll have a look next time on the boat (whenever that will be!).
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Post by brummieboy on May 2, 2020 21:16:58 GMT
I already corrected my post. It seems some sellers call them a clutch pulley and others a freewheel pulley. Thinking about it, I shall call them freewheel in future. No probs. I think I went the other way from you, the Zen was the original and the new one was a different make, quite probably Valeo. I’ll have a look next time on the boat (whenever that will be!). The next time you need to stock up your sister's (?) wine shelf?
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Post by kris on May 4, 2020 11:42:14 GMT
So this morning I was able to eliminate the inverter/charger being the issue by running his boat from my generator. I tensioned the belt a little more as it was a bit loose. The squealing and power dropping in and out was still happening. On closer inspection the travelpower alternator pulley has been replaced at some stage with one of the ones with the ballrace/sprag clutch. I’ve attached a photo as there seem to be two types of these, so I’m wondering if someone can identify it and has a contact for buying one? free image upload no registration
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Post by Telemachus on May 4, 2020 12:04:48 GMT
It look pretty similar to mine, there should be some numbers on it, but your photo is rather blurry! Anyway, I strongly recommend Ed Shiers at 4 counties marine fourcountiesmarineservices.com/3-5-travel-power/I generally hold most boat “engineers” in total contempt, but not Ed, he is great. Seems happy to travel a fair distance. Originally I got in touch with him when I identified the pulley was slipping. He sold me a new pulley by post, around £50 I think. But I had trouble getting the old one off, you really need an impact driver which I didn’t have at the time. I got back in touch and he said “no probs, I’m working in the area tomorrow, I’ll pop round and fit it for you.” Which he did. He didn’t want to charge me anything for doing it but in the end I managed to force £20 on him just to cover his transport costs.
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Post by kris on May 4, 2020 12:09:51 GMT
It look pretty similar to mine, there should be some numbers on it, but your photo is rather blurry! Anyway, I strongly recommend Ed Shiers at 4 counties marine fourcountiesmarineservices.com/3-5-travel-power/I generally hold most boat “engineers” in total contempt, but not Ed, he is great. Seems happy to travel a fair distance. Originally I got in touch with him when I identified the pulley was slipping. He sold me a new pulley by post, around £50 I think. But I had trouble getting the old one off, you really need an impact driver which I didn’t have at the time. I got back in touch and he said “no probs, I’m working in the area tomorrow, I’ll pop round and fit it for you.” Which he did. He didn’t want to charge me anything for doing it but in the end I managed to force £20 on him just to cover his transport costs. sounds like a decent chap. I’m not going to be able get an impact driver to the old one without disconnecting it and taking it out of the boat, as there is very little clearance in front of the pulley. Hence the blurry photo.
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Post by Telemachus on May 4, 2020 12:16:43 GMT
It look pretty similar to mine, there should be some numbers on it, but your photo is rather blurry! Anyway, I strongly recommend Ed Shiers at 4 counties marine fourcountiesmarineservices.com/3-5-travel-power/I generally hold most boat “engineers” in total contempt, but not Ed, he is great. Seems happy to travel a fair distance. Originally I got in touch with him when I identified the pulley was slipping. He sold me a new pulley by post, around £50 I think. But I had trouble getting the old one off, you really need an impact driver which I didn’t have at the time. I got back in touch and he said “no probs, I’m working in the area tomorrow, I’ll pop round and fit it for you.” Which he did. He didn’t want to charge me anything for doing it but in the end I managed to force £20 on him just to cover his transport costs. sounds like a decent chap. I’m not going to be able get an impact driver to the old one without disconnecting it and taking it out of the boat, as there is very little clearance in front of the pulley. Hence the blurry photo. Not too difficult to remove though, I took ours out just to get better access. Whilst it’s out, worth checking the bearings and the brushes. Once the bearings have any play in them things get worse fairly quickly and other damage is thus caused, eg to the slip rings. Of course the thing is spinning all the time the engine is on, regardless of whether the TP is switched on. Pretty sure the bolt holding it on is LH thread, but don’t quote me! You can tell by observing the direction of rotation.
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Post by kris on May 4, 2020 12:40:31 GMT
Thanks for all your help. I’m glad with your help I was able to stop this new to boating boater getting waylaid by someone unscrupulous.
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Post by Telemachus on May 4, 2020 12:44:53 GMT
Thanks for all your help. I’m glad with your help I was able to stop this new to boating boater getting waylaid by someone unscrupulous. No probs, I think you deserve most of the credit for helping the chap. It is depressing though, just how many cowboys there are out there trying to rip people off either deliberately or through incompetence.
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