Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: paulesc on May 25, 2010, 12:29:22 PM

Title: timing chain 2.5 yj
Post by: paulesc on May 25, 2010, 12:29:22 PM

i have a rattle at the front end i thought was the manifold but now i think its the timing chain. i removed the fan belt and started it up and still got the rattle so im am going to fit a new tensioner in the next couple of weeks.
any hints or tips before i start?
cheers, Paul.

Title: Re: timing chain 2.5 yj
Post by: Bubba on May 25, 2010, 03:19:59 PM

yup do it carefully and fit a chain too

Title: Re: timing chain 2.5 yj
Post by: greggmo on May 25, 2010, 10:35:26 PM

the fat one speaks the truth. we did the one on mine. change the lot mate.

Title: Re: timing chain 2.5 yj
Post by: tag on May 26, 2010, 12:28:39 AM

Yeah, changed mine a few months after buying it,    suddenly started rattling at tickover speeds very annoying!  replaced both sprockets, chain, tensioner,  when i stripped it down  it was the tensioner that was causing the problem. the chain and sprockets were fine but changed them anyway as i had bought them. if i remember the tensioner metal bracket mount needs the sump lowering to get a spanner on the bolt that holds it in place! so i just swaped the new tensioner shoe, just push out the pin and change over.  i put up a pic of the tensioner at the time.... don't pull on the outer edge of the harmonizer as its rubber mounted.....hope this helps........

Title: Re: timing chain 2.5 yj
Post by: paulesc on May 26, 2010, 09:18:07 AM

thanks for the help         :icon_biggrin:

Title: Re: timing chain 2.5 yj
Post by: paulesc on May 26, 2010, 10:47:23 AM

will i need any gaskets or special tools like a puller to get any of the belt wheels off?

Title: Re: timing chain 2.5 yj
Post by: tag on May 26, 2010, 12:28:51 PM

you will need a puller for the bottom pulley (harmonizer) and a gasket for the cover plate..... you will have to remove the radiator to tackle the pulley! not too bad a job, if you change the chain/ sprockets   remember to line up the timing marks...........cya

Title: Re: timing chain 2.5 yj
Post by: paulesc on June 02, 2010, 01:40:22 PM

still not done it yet.
i rang up to order the parts and the guy on the line said before i order any parts i should take off the distributer cap and see if there is any delay in the rotor arm moving  when turning the crank by hand. i tried that and it seems fine?

when i start the engine from cold it takes about 5 seconds for the rattle to start.