Adjusting Tappets

[Rafiki]

I have a Volvo D2-40 engine 4cyl 1500cc which has run circa 1500 hours. The service schedule suggests that Tappets should be checked and adjusted ( I doubt it has ever been done). I understand the principal and have the workshop manual which gives adjustment details etc. BUT how do I turn the engine over to a small but at a time to actually get the right tappets opening and closing? When I did it on my 2cyl Bukh it had a flywheel to turn and 42 years ago I jacked up my my Morris Minor a small amount and turned a wheel while in gear. The Workshop manual just says 'Crank the engine'. Any idea?

 

[pcatterall]

Last time I did it was on my 4108 with the injectors out so it just turned on the crank pully. Not sure if it can be done that way under compression! Do you want inspect the injectors by any chance!?

 

[VicS]

Can you not get a socket on the crankshaft pulley retaining nut

 

[pvb]

With a socket wrench on the crankshaft pulley nut, you can slowly turn the engine over.

 

[Rappey]

Can you not put a socket on the crank pulley wheel and rotate engine ?
Ha, VicS beat me to it.

 

[peter gibbs]

Can you not get a socket on the crankshaft pulley retaining nut

This is the way the pros do it -= takes a bit of leverage but gives enough control to manoeuver the gear to the right position.

PWG

 

[Rafiki]

OK, thanks all. I will try on the crankshaft pulley retaining nut.

 

[colind3782]

OK, thanks all. I will try on the crankshaft pulley retaining nut.

You will probably need a breaker bar to get enough torque if there is no way to release the compression and the longer the bar, the finer the adjustment possible.