hyperopt

When I change the timing belt/water pump, I always change the front crankshaft and camshaft seals. I don't see those seals in timing belt component kits and people don't mention about changing them very often. What are your thoughts?

vcheng

I would change them only if there were any seepage noted after a careful inspection.

jimbosr1

i will change them on the second timing belt change because they looked good on the first change.

tradosauru

I read somewhere on this forum where the crankshaft and camshaft seals are not easily accessible.

911LE

If they are not leaking don't replace them. The cam seals are not that easy. You must remove the valve covers, all of the cam bearing caps, then the cams themselves. Once out the cams that have the seals must be clamped in a vice and disassembled further to access the seals.

shmi

They came with my timing belt kit but I didn't replace them. Not leaking or anything and they're not too easy to do.

hyperopt

Oh, the cam seals are much more difficult than the 1stGen LS, but the crank seal is easy like the 1stGen?

Lzam

They came with my kit I changed everything at 100,000 miles just pay the extra and have piece of mind for another 100000 thousand miles just because it doesn't leak doesn't mean it's not worn!

ryanSC300lover

iTrader: (1)

I would change them

My previous LS I did it, kit didn't come with it, paid extra for it

lextout

I would change out the cam seals,crank shaft,valve cover gaskets,spark plugs every time a t-belt/water pump is replaced, there all inexpensive parts, total around 300$, its a one stop shop. I now have to change out the cam seals due to leak which also screwed up my alternator cause it was leaked on. I'm doing all this after the tbelt was changed 40k miles ago. So im just gonna do the whole shebang.

ryanSC300lover

iTrader: (1)

interestingly talked to a shop owner today who has been working on japanese cars 31 years

he said not to do the cam seals if it isn't leaking...didnt make sense to me..

also quoted 800-1200 for full 90K service, plus radiator. them supplying oem parts

Bocatrip

Not necessary if not leaking.

hyperopt

Thanks everyone for the inputs. I'll replace the crank seal on the next timing belt change since it will take 10-15 additional minutes to change. The cam seals are a different story - way too much work and the time saved from changing them during the timing belt change isn't large enough to be beneficial.

lextout

Also remember guys that if the passenger side cam seal leaks, then it will leak on your alternator and damage it. This was the case for me, my alternator was caked with oil.

911LE

The oil that drips onto the alternator and ruins it usually comes from the power steering pump. It sits right on top of the alternator and is quite a common leak on many Toyota's.