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Author Topic: Knocking noise  (Read 244 times)
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cods68
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« on: March 24, 2012, 05:25:43 PM »

Hi all hope someone can shed some light  Huh? I replaced my sads last weekend which went ok so I thought .. I followed the tutorial . Engine quiet as a whistle on tick over now ... But another problem occured upon starting I get a couple of knocking noises and upon switching off ... So I took the prop shaft off again and redid it to no avail .... Now for the more info bit I marked the front bush but didn't mark the rear as that was already marked .. Now for the life of me I can't remember if I checked when I marked the the front ... So when I redid it I just popped the back 1 out and moved it to the next point ... Now is it sods law that it's the next notch  Huh? Or could there be another factor  Huh? It runs fine no other knocking noises at all ...  Cry
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ADarbon
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« Reply #1 on: March 24, 2012, 07:03:42 PM »

the mane part to worry about is if the raised parts on the sad is going into the right place and the horse shoe is back to where it should be. are you sure the knocking noise is because of the shaft. could just be the exhaust knocking when switching on the engine and off, mine does
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Tony the family guy
cods68
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« Reply #2 on: March 24, 2012, 07:13:55 PM »

All the raised sad all slotted into place ... .as regards to horseshoe it just bolted back together ... I did notice that when I bolted it up to main frame it sat at back of bracket as before it sat at front , but I pushed it forward to front and no difference  Huh?  I just assuming its coming from shaft as i don't recall it doing or before hand ...
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« Reply #3 on: March 24, 2012, 07:23:07 PM »

its that bottom bolt on the horse shoe that's the biggest factor It aliens the whole front unit. If you have lot the point where it should sit i found the only way to line it is to loosen the bottom nut with the engine running get somebody to push the front unit till the noise stops and tighten the nut.
did the knocking start straight after you did the sads or a little while after. I'm still putting my money on the exhaust especially if you have a towbar.
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Tony the family guy
cods68
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« Reply #4 on: March 24, 2012, 07:37:03 PM »

Yeah the noise started straight after ... Just a thought the rear sad coupling the raised parts didn't slot into the carrier on the bus just bolted them up ...
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« Reply #5 on: March 24, 2012, 08:22:18 PM »

im sure they should slot in to the carrier just dont need a nut on them.
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Tony the family guy
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« Reply #6 on: March 24, 2012, 09:12:04 PM »

I'll recheck but sure they didn't slot in as I had to keep turning shaft to find bolt holes  Huh? But I'll check carrier horseshoe keep you posted    Wink
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« Reply #7 on: March 24, 2012, 09:36:03 PM »

should deffinatly slot on. when i did it i sat the carrier on the sad first then moved it in to position. you have to have the bottom nut on the horse shoe undone to do it. I have a feeling this is what your knocking noise is.
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Tony the family guy
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« Reply #8 on: March 24, 2012, 09:42:02 PM »


you can see it here in this picture the bolts go through the sad and carrer
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Tony the family guy
cods68
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« Reply #9 on: March 24, 2012, 09:45:10 PM »

Oh right I attached sad to shift 1st then twisted shift to fit carrier .. As I looked at it thought that be way to do it as there no room to fit nuts because the slots upto what looks like a pully wheel and no room to fit nuts and washers  :Smiley
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« Reply #10 on: March 24, 2012, 09:48:59 PM »

The carrier on mine don't look like that front  1 does  Huh? The carrier looks more in the pulley wheel
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cods68
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« Reply #11 on: March 24, 2012, 09:57:56 PM »

Think best thing for me to do is take it back off  Cheesy ... Because if  it's suppose to slot on its not for some reason It did on the front ones .
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« Reply #12 on: March 24, 2012, 10:06:52 PM »

thats a picture of the pully wheel and the carrier going in to it. there are groves on the pully wheel where the carrier sits. I can only assume the carrier didnt fall out when you removed the sad. It has to come out because the main bolt for the pully wheel is behind it
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Tony the family guy
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« Reply #13 on: March 24, 2012, 10:24:37 PM »

The carrier deffently doesn't stick out like that 1 does  Huh?
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« Reply #14 on: March 24, 2012, 10:44:08 PM »

it does sit in to the pully wheel, not much of it stands out. In that photo its pulled out. and being pushed in to the shaft.
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Tony the family guy
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« Reply #15 on: March 24, 2012, 10:50:15 PM »

Oh right phew thought I'd broke it  Grin it was hammering down with rain last wknd on my 1st attempt ... So does the carrier pull out easy ? Or does it need to be kept pushed in ?
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« Reply #16 on: March 24, 2012, 11:13:35 PM »

Normally just falls out yours must be well seated over time.
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Tony the family guy
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« Reply #17 on: March 24, 2012, 11:21:07 PM »

So that could be problem then ... Well it didn't pop out while I been twisting and turning it  Cheesy
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« Reply #18 on: March 26, 2012, 07:57:54 AM »

Well didn't get chance to have a look yesterday ,went to Brean instead weather was lush ... And have bus a run , it's surprising people come out of woodwork when going out in these buses . Only started with with 3 people and 2 mutts . By Rome we set off there was 6  and 3 mutts  Grin .. On update though the noise seems to be coming from under drivers seat somewhere ... So be checking exhaust 1st ... If that's not problem I'll update and take pic of carrier  Grin. Happy days
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cods68
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« Reply #19 on: March 31, 2012, 07:27:35 PM »

Well don't think it's exhaust checked today ... Couldn't get up on ramps today they kept sliding away ... Huh? Looks like getting back under and looking at sads again  Embarrassed ...  Do misalignment upset timing ? Now and again sounds  like slight over run ...
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« Reply #20 on: March 31, 2012, 10:32:55 PM »

it shouldn't do the only way it could happen would be the shaft jamming and stopping the engine from turning. I really cant see that happening.
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Tony the family guy
cods68
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« Reply #21 on: April 01, 2012, 09:59:50 PM »

That's good news then  Grin ... I'll check it out properly when I get chance
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« Reply #22 on: April 02, 2012, 10:05:10 AM »

No engines turning fine  Huh? Starting to puzzle the hell out of me ... Now seams to knock now and again on picking up speed moving off... It's just got to get me through bank hol wknd then I'll get underneath. Runs fine when going ... Don't even notice a difference running 60% veggie  Grin
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« Reply #23 on: April 02, 2012, 10:13:08 AM »

Update on noise it sounds like a thudding not metal on metal   Huh? So would assume its a bush somewhere
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« Reply #24 on: April 02, 2012, 11:36:07 AM »

you need to check out the carrier for the shaft if its not in the right place the whole shaft could be knocking against something also your sads will get worn out real quick
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Tony the family guy
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« Reply #25 on: April 02, 2012, 12:56:43 PM »

Yeah will do hopefully wednesday I'll get a chance to get under it ... I'll take some pics as well if I get stuck  Grin
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« Reply #26 on: April 02, 2012, 02:31:37 PM »

thats a good idea neatest i can get to looking getting the gear oil this week hopefully get it changed as well if the weather holds out
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Tony the family guy
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« Reply #27 on: April 03, 2012, 08:18:11 AM »

Yeah I'll take the carrier off at back .. Front deffo slotted in .. Iam sure back carrier didn't have any slots ... So plan is just to uncouple back part ... Amd check engine mounts  Grin ... Was suppose be going away for wknd but that's canceled because it's going to snow apparently ... So I prob got wknd to tinker about on her  Grin
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« Reply #28 on: April 03, 2012, 12:42:07 PM »

you did use 6 bolts on the rear coupling didn't you
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Tony the family guy
cods68
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« Reply #29 on: April 03, 2012, 01:51:59 PM »

Yeah 6 bolts 3 with nuts and washers on front carrier and 3  bolts and washers just bolted into the rear carrier ...
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« Reply #30 on: April 03, 2012, 03:42:37 PM »

Had one person that did it that way posted up asking what the three extra bolts where for
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Tony the family guy
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« Reply #31 on: April 03, 2012, 04:53:19 PM »

Lol that's  a good 1 I norm end up a few extra bits  Grin it's just dawned on my I put sads back in slightly different to how I took them off  :Smiley upon taken them off the bolts was 3 one way 3 the other ... I but them back all going the same way as thought it be easier  :Smiley .. So all bolts are facing away from prop shaft ... Would this make a difference ?
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« Reply #32 on: April 03, 2012, 05:08:52 PM »

take some photos and post them lets have a look at what you have got
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Tony the family guy
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« Reply #33 on: May 09, 2012, 03:48:27 PM »

Just been looking at a picture of sads and the washers are pointing towards the shaft not across the bushes which I fitted mine , mine are pointing around the bushes towards the holes in the bushes ... If this makes sense  Grin and nope I not been on booze yet  Grin ...
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« Reply #34 on: May 09, 2012, 03:53:22 PM »

Just looked back at tutorial and looks like I did it right  :Smiley looks like I going to have to bite the bullet and get underneath with camera  :Smiley
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« Reply #35 on: May 09, 2012, 05:32:22 PM »

I'll have my tools when i come to Bristol so if its not sorted by then we'll have a gander 
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Tony the family guy
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« Reply #36 on: May 09, 2012, 11:07:00 PM »

Well hopefully I'll have it sorted by then ... If I can stop driving it and do some work on it instead  Grin but might hold you to that lol  Grin
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