Thread: 3.9 timing case seal

or can you change the seal without removing cover??

Yes.
The hardest part is cracking the nut on the crank to remove the pulleys. Most do it by getting a socket and long handle, laying it on the chassis and hitting the starter.
Regards Philip A

Thanks PhilipA,
do i need a puller for the belt-drive or will it come of with a little persuasion??
any tips on digging out the old seal??
Thanks again Luke

In my experience the pulley set/dynamic balancer will just pull off by hand.

You just need a seal removal tool.
The only other tip is to make sure the seal surface on the pulley is not grooved or if it is to fit the seal in a different position.
Regards Philip A

Agree with PhillipA, the 3.9 in that model is an easy engine to work on, and pretty reliable

JC

A seal removal tool is best and what the dealers use, but you can dig the seal out with a sharp flat edged screw driver. Make sure the new seal is pressed fully home plush - use a socket and soft head hammer or a block of wood - and put a little grease or oil around the inner lip before you slide the pulley back on.

Then check your rocker cover breathers are clear in case they are blocked and causing pressurisation in the crankcase which can result in leaking seals.

If you crack the harmonic balancer bolt off using the "long bar - hit the starter" method, make sure you take the high tension lead out of the coil ! If not, things may get messy.

Pete