Hi Everyone,
I have a 1989 Camry 4 cylinder (3sfe) with 247,000 miles on the odometer. It is leaking a lot of oil from the bottom of the timing belt cover. I believe the oil pump gasket has sprung a leak.

I suppose it could also be the crankshaft and/or camshaft seals that are leaking also.
The timing belt has 171,000 miles on it

and the water pump has 161,000 miles on it

so I am going to replace the water pump, timing belt, camshaft and crankshaft seals and the oil pump gasket while I am working in the area.
I never attempted to replace a timing belt before but I know I can get the job done if I follow the directions in my Chilton's and Haynes repair manuals.

Anyhow I have some questions.
1) should I bother replacing that tiny oil pump seal? Does it tend to leak?
2) Can I support the engine from underneath with the oil pan off? Is their a way to do this. I don't own a engine hoist to support it from the top.
3) Does the oil pan need to be removed to replace the oil pump gasket?
4) In my Chilton's repair manual it says I need a spanner wrench to remove the camshaft timing pulley. Is there another method of removing the pulley without this wrench that works just as good?
5) What type of puller is needed to remove the crankshaft pulley? In the manual it says something about using a puller that applies force to the "hub only". It said not to use a gear puller.
I don't own any pullers so I am not too familiar with the different types available.
Any help/advice on getting this work done is appreciated.
JOET/CAMRY