andy the hammer Posted January 18, 2011 Report Share Posted January 18, 2011 Our Beta 43 engine has done 2250 hours and wondering if the tappets need adjusting if so how? Regards Andy Link to comment Share on other sites More sharing options...
GSer Posted January 18, 2011 Report Share Posted January 18, 2011 Read the manual, they will certainly need checking at the appropriate service intervals. It is usually a simple job as long as you've done it at least once before (ideally under experienced supervision), and you have a good tool kit and know how too use it. It's worth remembering that loose tappets cause alot less problems than tight tappets Good luck Paul Link to comment Share on other sites More sharing options...
andy the hammer Posted January 18, 2011 Author Report Share Posted January 18, 2011 Read the manual, they will certainly need checking at the appropriate service intervals. It is usually a simple job as long as you've done it at least once before (ideally under experienced supervision), and you have a good tool kit and know how too use it. It's worth remembering that loose tappets cause alot less problems than tight tappets Good luck Paul Done it many times when cars were cars and not space ships but never done it on a diesel engine, have tool box but now need the courage. Regards Andy Link to comment Share on other sites More sharing options...
Ark Right Posted January 18, 2011 Report Share Posted January 18, 2011 Our Beta 43 engine has done 2250 hours and wondering if the tappets need adjusting if so how? Regards Andy Hi Andy, checking the Beta operation and maintenance manual there is no mention of checking tappet clearances, nor do they give the clearances to do so. Modern diesels are a completely different animal from the vintage stuff. A case of not broken doesn't need fixing. Link to comment Share on other sites More sharing options...
Albion Posted January 18, 2011 Report Share Posted January 18, 2011 Hi Andy, checking the Beta operation and maintenance manual there is no mention of checking tappet clearances, nor do they give the clearances to do so. Modern diesels are a completely different animal from the vintage stuff. A case of not broken doesn't need fixing. You need to ascertain whether they are hydraulic tappets. If they are then no adjustment is necessary. Any mention of hydraulic tappets in the manual? Roger Link to comment Share on other sites More sharing options...
Tim Posted January 18, 2011 Report Share Posted January 18, 2011 No mention of anything to do with tappets in the Beta manual! A call to Beta would be the way to go methinks! Link to comment Share on other sites More sharing options...
Albion Posted January 18, 2011 Report Share Posted January 18, 2011 (edited) Found this reference to manually adjusting tappets on a V1902 engine but this may not be correct for the V1903 engine that is the base engine for the Beta 43 (I believe) so be careful. http://www.skidsteerforum.com/DesktopDefault.aspx?tabid=54&frmView=ShowPost&PostID=28169 Roger Edited January 18, 2011 by Albion Link to comment Share on other sites More sharing options...
andy the hammer Posted January 18, 2011 Author Report Share Posted January 18, 2011 I have just looked at the manual that we were given and no mention of tappets so perhaps hydraulic? Regards Andy Link to comment Share on other sites More sharing options...
Canalwatcher Posted January 18, 2011 Report Share Posted January 18, 2011 The Isuzu 42HP on Zodiak should have its tappets adjusted every 1000 hours according to the manual. However, I was advised by an RCR engineer who did our engine inspection that there was no need to do this on the marinised version as the 1000 hours was based on vehicle use where there is much more revving. He advised if it sounds fine then do nothing. He seemed a knowledgable chap and when it came to oil changes recommended a pre and post winter change including filter in addition to the regular 250 hour change Mick Link to comment Share on other sites More sharing options...
John R Posted January 18, 2011 Report Share Posted January 18, 2011 No mention of anything to do with tappets in the Beta manual! A call to Beta would be the way to go methinks! I have a manual sent by email from Beta that is actually the Kubota workshop manual for the base engine. Tappets are listed as check and adjust every 800 hrs. My Beta 43 does not have hydraulic tappets. Suggest you get in touch with Beta and ask for the manual to be sent Link to comment Share on other sites More sharing options...
Albion Posted January 18, 2011 Report Share Posted January 18, 2011 (edited) The Isuzu 42HP on Zodiak should have its tappets adjusted every 1000 hours according to the manual. However, I was advised by an RCR engineer who did our engine inspection that there was no need to do this on the marinised version as the 1000 hours was based on vehicle use where there is much more revving. He advised if it sounds fine then do nothing. He seemed a knowledgable chap and when it came to oil changes recommended a pre and post winter change including filter in addition to the regular 250 hour change Mick Unfortunately, 'sounding fine' can cover valve clearances that are too tight. Tight valve clearances on a diesel can reduce compression and cause white smoking and inefficient running. Clearances can be reduced by valve recession into the head for example. We used to get valve recession a lot on, for example, the Vauxhall Corsa 1.5 turbo diesel engine. Roger Edited January 18, 2011 by Albion Link to comment Share on other sites More sharing options...
Tony Brooks Posted January 18, 2011 Report Share Posted January 18, 2011 Unfortunately, 'sounding fine' can cover valve clearances that are too tight. Tight valve clearances on a diesel can reduce compression and cause white smoking and inefficient running. Clearances can be reduced by valve recession into the head for example. We used to get valve recession a lot on, for example, the Vauxhall Corsa 1.5 turbo diesel engine. Roger I would add that the valve springs on the modern Jap base engines are so weak that if you used the sort of "feel" on the gauges that one used to then there is every chance they would be too tight. Mind you I have not heard much about valve recession on marinised engines. Link to comment Share on other sites More sharing options...
Albion Posted January 18, 2011 Report Share Posted January 18, 2011 (edited) I would add that the valve springs on the modern Jap base engines are so weak that if you used the sort of "feel" on the gauges that one used to then there is every chance they would be too tight. Mind you I have not heard much about valve recession on marinised engines. Possibly not Tony. I was using it as an illustration of how you cannot judge valve clearances by sound alone though. We could tell on the Vauxhall (Isuzu) 1.5 turbo by when the whistle from the turbo disappeared, but we used to check anyway. Roger Edited to add that they use to recess so far that the clearance went negative and we had to put in a temporary, much thinner, shim into the top of the bucket in order to be able to take a measurement, in order to choose the correct shim for the correct clearance. Edited January 18, 2011 by Albion Link to comment Share on other sites More sharing options...
Tony Brooks Posted January 18, 2011 Report Share Posted January 18, 2011 Possibly not Tony. I was using it as an illustration of how you cannot judge valve clearances by sound alone though. Which I also agree with Link to comment Share on other sites More sharing options...
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