I think the front seal on my 1984 300 sd is leaking, is it hard to pull off the front balancer? Do I need special tools? Also I want to remove the injectors. Any special tools for this. I am new to diesels.

You can pull it with a generic balancer puller. Pulling is easy; reinstalling is a different matter entirely.

Yes, it is hard.

For my car:

You need a really big torque wrench.
And you need a special tool to hold the flywheel / crankshaft.
Lifting the car is necessary to get at it, without pulling the rad.
You'll need the front seal gasket, and get the hub too. It's probably got a groove worn in it that will leak even with a new gasket.

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Cheers!
Scott McPhee

1987 300D

Not that hard, hardest part is reinstalling and aligning dowel pins.

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1982 300SD--251,151
2001 Ford f-150 4x4--347,034

If you don't get it together correctly you can waste an engine

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Junqueyardjim
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!

Also if the seal isn't seated properly, the engine will start to puke oil again, i had to buy three metric bolts for the puller. Be careful when removing the 6 hex bolts also, not fun if rounded.
New front seal, spacer ring required, you can use an extension in between the balancer and the block.

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__________________
1982 300SD--251,151
2001 Ford f-150 4x4--347,034