There is no procedure listed for replacement of the upper oil pan.
I had to replace upper oil pan on this 2.4L.
The customer had bottomed out on the street and the aluminum oil pan broke at the
area where the engine mount attaches to the oil pan.
Front of engine by the right axle.
To replace just the upper oil pan.
1) Remove Valve cover.
2) Remove Lower oil pan.
3) Remove Timing Cover.
4) Remove Oil Pump gear and chain, then oil pump.
5) Remove upper oil pan, 11 Bolts, one bolt is hidden in oil filter housing. See attached picture.
If you plan on replacing the rear main seal, you will need to remove engine from car.
Notes: There is an updated Balance shaft assembly.
The Balance shafts are driven by a gear on the crankshaft.
The drive gear on the crankshaft has 50 teeth and the balance shafts have 25 teeth.
The Toyota dealership near us, estimates this repair at 22 hours including rear main seal.
To set up the balance shafts engine at T.D.C. #1 Compression. See Fig #169. And attached pictures
Tuesday, December 30th, 2014 AT 12:43 PM