I'm trying to remove oil pan on a 2

ANONYMOUS

MEMBER
2002 NISSAN ALTIMA
147,000 MILES

I'm trying to remove oil pan on a 2.5 engine to inspect for engine damage from a bad converter. I'm having trouble removing oil pan because of balancer assy. I do not won't top take it apart wrong and cause problems on reinstalling it later. What procedure should I use to remove the assy. To inspect bearings? If there is a web site I can check out that would be great also. Thanks

1 Reply

ASEMASTER6371

MECHANIC
52,797 POSTS

What are you going to look for?

Bad converter? Torque or cat?

What kind of damage do you exspect to see?

REMOVAL

WARNING: To avoid the danger of being scalded, never drain the engine oil when the engine is hot.

Remove the engine under covers on both sides, using power tool.
Drain engine oil.
Remove the front exhaust tube.
Remove the front suspension member, using power tool.

Unhook the power steering reservoir from the mounting bracket and reposition it lower to add slack to the power steering lines.
Disconnect the A/C compressor with piping connected from the mounting bracket and suspend with a strong wire.
Disconnect the upper sway bar links.
Remove the front and rear engine mount through bolts while supporting the front suspension member with a suitable jack and tools.
Disconnect the lower ball joints.
Remove the two steering gear mounting bolts (do not remove the mounting bracket from the steering gear housing).

Remove the lower oil pan bolts. Loosen the bolts in the order shown, using power tool.

Insert the Tool between lower oil pan and the upper oil pan to separate them. Tap gently on the side to move the Tool around the pan; do not damage the mating surface.
Remove the lower oil pan.
Remove the oil pickup screen.
Remove rear plate cover, and four engine-to transaxle bolts, using power tool.

Loosen the upper oil pan bolts in the order shown to remove upper oil pan, using power tool.

Insert the Tool between the upper oil pan and the cylinder block to separate them. Tap gently on the side to move the Tool around the pan; do not damage the mating surface.
Remove the upper oil pan.

INSPECTION AFTER REMOVAL

Clean the oil pickup screen to remove any foreign material.

INSTALLATION

Installation is in the reverse order of removal. Paying attention to the following.

Apply Genuine RTV Silicone Sealant, or equivalent, to the upper oil pan.

Install the two new O-rings in the upper oil pan.

Tighten the upper oil pan bolts in the order as shown. Bolt No.10, 11, 18 indicate a double tightening in the sequence of bolt Nos 1, 2, 3.

NOTE: Refer below for specified bolt sizes:
M6 x 20 mm (0.79 inch): No.19, 20
M8 x 25 mm (0.98 inch): No.1, 3, 4, 9
M8 x 45 mm (1.77 inch): No.2, 5, 6, 7, 8, 17
M8 x 100 mm (3.97 inch): No.12, 13, 14, 15, 16

Apply Genuine RTV Silicone Sealant, or equivalent to the lower oil pan.

Tighten the lower oil pan bolts in the numerical order shown.

Wait at least 30 minutes after the oil pans are installed before filling the engine with oil.

INSPECTION AFTER INSTALLATION

Check for any engine oil leaks with the engine at operating temperature and running at idle.