Club G40 Forum
Technical => Superchargers / G-Lader => Topic started by: dubface on September 02, 2009, 05:57:21 pm
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Hi People,
Need a bit of help/advice.
I've just refitted my newly serviced/rebuilt charger and it making a strange rattly grinding noise. This surely can't be normal or is it just running in? No noises like this before the rebuild so I'm pretty sure it the charger.
Thanks in advance
Jason
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who did your charger
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A place called Volksfield Engineering
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i would ring them and ask for their advice if i was you before it causes any damage.
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out of interest how much did they charge you for the lader service?
what did they change on it?
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I've already had to send it back once for the same reason. Said they couldn't see anything wrong with it but suspected a bearing?? It definatly sounds like something is loose inside as its not a constant noise- more of a rattle if that makes sense.
They have told me all seals and bearings have been changed including the apex seals and internal belt. It cost me £320 plus postage x2 ::)
Starting to wish I had sent it to g-werks now.
Thanks for the replies
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sounds odd, does it rattle if you shake it about?
do these peopel actually know what they are doing as not many places know what a lader is nevermind how to service it!
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Im currently running my charger in, no strange noises, it purrrrs
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Thanks, that makes me feel better! :'(
I think they know about them because they were selling rebuilt kits/seals on ebay which is where I first heard of them. Say they have done dozens of rebuilds before, but i guess you never know do you.
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some bearings are noisier than others, but grinding is bad...
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any mechaniclly minded person can do a basic overhaul to a g40 charger with the right tools.( press, bearing and seal pullers and some loctite and lube). it might be the keys or keyways worn on the shaft or the the cam parts that go over the shaft. everything should be a tight fit.
When i did mine about a year ago one of my keys were worn.
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i'd advise against using a bearing press if you can help it.
Some of the countershaft bearings i've seen are notchy
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i didnt find a problem using the press,just ure some vasoline when inserting them.
its probably easy for me as i press bearings into things as part of my job which some are smaller than the ones in a charger. taking your time is the thing
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ah - just jabba/g-werks and me always use a heated casing and they just drop in. PLOP
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So what do you advise then, sending it back to him again or opening it up to have a look inside considering he's already had it back once for the same reason.
Turning the charger manually - it feels fine, nice and tight and smooth.
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I know this might sounds strange, but when I put my charger back on, my belts where not tight enough and it sounded like a charger noise,got parnoid, even at the garage when i had it mot they where like is that ok. but once the belts where tightened all sounded find.
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that would work to. do you use a oven or just a blow torch. at work we just use a blow torch for heating comp wheels on turbo's to get them to slide on.
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Beavis back in the day did it with a heat gun on mine.
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Sounds the same as my last psd charger 100 miles later top bearing smashed through the scroll and the outlet case ... id get it off as you dont want that or something like that happening
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Jase are you 100% sure the noise is coming from the charger?
Might be worth splitting it open and having a look.
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check the oil feed is feeding properly or the bearings will be dry as
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Robin - You wanna pop round and have a look?
I'm 95% sure its the charger as there were no noises before I sent it off for a rebuild.
I'm going to split it open and have a look myself which I'm not too happy about as its exactly what I paid someone else to do ::)
What is the best way to check the oil feeds? I did loosen them whilst it was running and oil dripped out but didn't remove them completely.
Another thing I didn't mention was that the engine stalled a few times which i suppose could be related - as if the charger is seizing.
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jase you got pm, i can come over to give you a hand if you like no problem.
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if you split the charger get a thin flexable peice of wire and push it through the oil inlet in the charger and see if the wire comes out beside the bearing just incase there is crap stuck in the hole.
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Ok, finally got chance to look at the charger again today.
I disconnected the oil feed supply and there was nothing more than a dribble of oil coming through when I started the engine. I think I read somewhere that oil should pi$$ out of the feed pipe, is that right?
Could this be the reason for my horrible noises?
Thanks
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I wouldn't start the engine with the feed pipe disconnected. But yes it sounds like the feed isnt supplying enough oil, renew it.
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I wouldn't start the engine with the feed pipe disconnected.
The belt was removed from the charger, so it wasn't spinning. Is it still potentially damaging to the engine?
Where can I get me a new oil feed pipe?
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Well, you might loose a bit of oil pressure. More the fact that it could pump out oil when it's running which you don't wan't to do. It's ok if you just turn it over a few times to see.
I would get a new oil feed from VW, around the £20 mark. It's worth getting new banjo bolt washers as they are only pence.
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i had this problem and i renewed the pipe but no difference. i had a new oil pump but the guy who fitted it didnt fit the rubber bung in between the pump and the plate. so i had major loss of oil pressure which wasnt enough to push oil out of the oil feed for charger. if i were you i would take the pipe off near the head and turn it over for 10 seconds to see if there is enough pressure the get oil coming through the hole where the banjo goes. if you have loads of oil shooting out then there is a blockage from the pipe to the charger or a blockage in the charger. dont run it for more than 10 secs though
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Ok, finally got chance to look at the charger again today.
I disconnected the oil feed supply and there was nothing more than a dribble of oil coming through when I started the engine. I think I read somewhere that oil should pi$$ out of the feed pipe, is that right?
Could this be the reason for my horrible noises?
Thanks
Don't get oil flow and oil pressure mixed up guy's. Oil shouldn't(and doesn't) piss out of feed pipe, its quite a low flow rate, that will pressurised if restricted.
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Disconnect the outlet pipe from the charger where it joins the return to the sump then you can rev the engine to see whats coming through the charger. Have a tin or bottle to collect the oil.
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Right, I removed the oil feed pipe and tried the air line on it today. I can blow though it but it does seem quite restricted.
Oil is flying out of the hole at the back of the head where the oil feed connects (it's spat all up my garage wall - anyone know how to get oil out of breeze block??) but still just dribbled out of the feed when I reconnected it. Doesn't seem to add up. Is the feed pipe meant to restrict the oil flow in this way?
Thanks for the help so far.
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Ok guys, bit of an update.
I've renewed the oil feed pipe with a brand new one from VAG and the noises continue. :'(
Can anyone clarify how much oil should be coming though this line. With the engine running and the bango bolt on the charger slackened - I'm just getting a dribble of oil running out and down the side of the charger. Does this sound about right?
Any help much appreciated as I'm getting disheartened with this now - want my G back
Thanks