How difficult to do inner oil seals? Had a quick look at the manual last night. There seem to be a lot of special tools involved.
Its not a simple 5 minute job and is in fact one of the jobs I hate doing the most as its quite messy!
Theres no point just replacing the leaking inner oil seals as its quite a big job to even do that, so as others have said you should replace the kingpin bearings while your at it and ideally the wheel bearings as well. If you dont replace the wheel bearings you should at least clean them up and re-grease them.
Only specialist tools you really need are a 54mm hub socket, torque wrench, spring scale (fishing scale). A brass drift is useful for getting the cone washers out and having a proper seal fitting tool helps but isnt essential.
I'd recommend following the instructions in the factory service manual to the dot and only use genuine seals and Koyo bearings.
Allow at least half a day and take the drain plug out on the diff the night before and leave it to drain overnight.
For a full front axle overhaul your going to need:
Grease
Diff oil
Inner and outer oil seals
King pin bearings
Wheel bearings
Free wheeling hub's gaskets,
You can but complete kits with all the bearings and gaskets in and that usually works out cheaper, but check their Koyo bearings and order genuine oil seals from Toyota.
