I finished the labor intensive part of fixing this oil leak. But i have a long way to go…
There’s an o-ring behind the oil pump on the block that over time shrivels or cracks, letting oil seep past it. The symptoms for me were oil drips forming on the oil pan and draining out of the wheep hole on the crank timing cover.
Here are the steps in this repair ($4 for the o-ring)
1. remove front diff and crossmember
2. remove timing belt
3. disconnect AC compressor from block
4. remove crank pulley
4a. remove oil cooler and dipstick
5. remove no.1 and no. 2 oil pans (fipg)
6. remove oil slinger (gasket)
7. remove oil pump (fipg and o-ring)
8. replace o-ring, reinstall oil pump, install new crank seal
9. reverse process
part numbers available on my spreadsheet: (relevant sub headings are Oil Pump, Oil Cooler, Timing Belt/Water Pump)
1999 LX470 Parts List