OEM 2002 Cadillac DeVille Crankshaft Seal

2002 Cadillac DeVille Parts Questions & Experts Answers

• Q: How to replace the rear crankshaft seal on 2002 Cadillac DeVille?

  A: The replacement of the crankshaft rear oil seal starts with removing the Flywheel. You should employ the crankshaft rear oil seal remover (J 42841) by fitting it to the crankshaft then fastening it with retaining bolts. A variable speed drill combined with a socket adapter allows you to insert eight one-inch self-drilling screws into the seal through the guide holes of the removal tool while slowing the drill speed before complete insertion. After installing all screws, remove the retention bolts while tightening the central screw on the j 42841 until the seal assembly separates from the crankshaft. A leak-free installation of the new crankshaft rear oil seal requires you to confirm that the drainpipe is clear. Scrape out debris from the crankshaft rear oil seal drain using either wire or an unbound plastic tie-wrap. Apply gm p/n 12345501 engine oil (or equivalent Canadian P/N 992704) to the cylinder block's outer crankshaft rear oil seal region while ensuring the area stays free from contamination before seal installation onto the crankshaft. Apply clean engine oil gm p/n 12345501 (Canadian P/N 992704) or equivalent to both the outer rubber surface of the new crankshaft rear oil seal and a lint-free cloth used to wipe down the outer diameter of the Flywheel flange. Insert the crankshaft rear oil seal installer (J 42842) center bolt until its hub extends one-half inch beyond the outer plate. Then mount the j 42842 onto the crankshaft by screwing three mounting bolts into the crankshaft flange until the j 42842 provides strong mounting. Follow this sequence to set up the crankshaft rear oil seal: first, tighten the center bolt of the j 42842 to reach crankcase bottom-out then backtrack the center bolt before removing three mounting bolts. After removal of j 42842 from the crankshaft flange inspect installation depth across the entirety of the crankshaft rear oil seal's circumference then reinstall the Flywheel only if necessary inspections reveal incompatible installation depths.