OEM Cadillac Catera Oil Pan

Cadillac Catera Oil Pan Parts and Q&A

• Oil Pan
  9158421
  Q: How to replace the upper oil pan on Cadillac Catera?

  A:

  Start by removing the lower Oil Pan and the engine mount lower nuts from the frame bracket while tracking the alignment tab position. Begin by removing the four transmission bolts and the a/c compressor hose strap bolt from the front of the upper Oil Pan and continue with the removal of all bolts except for the four corner upper Oil Pan bolts. Mark the propeller shaft for accurate position and detach the bolts to slowly slide the propeller shaft in backward direction. Secure the propeller shaft and continue by removing hanger bolts from the bracket and Exhaust Manifold nuts from the catalytic converter. Finally lower the converter unit by securing it with mechanic wire. Lower the vehicle after extracting the idler arm bolts from the frame and moving the relay rod out of the way. You need to employ the engine support fixture (J 28467-A) together with its engine support fixture adapter (J28467-450) and lift brackets (J 36857) to safely lift the engine up for removing the upper Oil Pan. Following the vehicle's lift to proper height, remove all upper Oil Pan bolts together with oil intake pipe bolts after which remove the pipe while carefully moving the pan toward the vehicle's front position without damaging aluminum mating surfaces. Take away the rubber seal and remove all rtv sealant from both the Oil Pan housing and engine block. Then clean these surfaces thoroughly. A 10 mm bead of silicone sealing compound (GM P/N 12346286 or equivalent) needs to be applied to the lower portion of the upper Oil Pan groove while leaving clearance of at least 10 mm from bolt holes. After applying the new rubber seal, proceed with installation. Use a 3 mm bead of silicone sealant to cover the outside border of the seal in front position and inside border in rear position on the upper Oil Pan within ten minutes. The oil intake pipe and its bolts require an 8 nm torque setting before the upper Oil Pan receives installation through the vehicle front toward the crossmember. Fit the four corner bolts on the upper Oil Pan to hold it in position while lowering the vehicle until the engine drops into place naturally. Finish the process by checking that motor mounts are properly aligned. After removing the engine support fixture (J 28467-A), engine support fixture adapter (J28467-450), and lift brackets (J 36857), the technician should support the vehicle again. The remaining upper Oil Pan bolts receive a 15 nm torque setting before the four transmission bolts to the upper Oil Pan receive their 40 nm tightening. Raise the relay rod before implementing idler arm bolt installation at 60 nm torque. Finally, place and install the catalytic converters while tightening nuts to 25 nm specifications. Position the propeller shaft correctly by lining it up with scribe lines from before then bolt it into place and tighten the bolts to 95 nm. The a/c compressor hose strap bolt needs to be installed to the upper Oil Pan before torquing it to 8 nm while the engine mount lower nuts require a torque of 55 nm. Install the Oil Pan and splash shield before putting on splash shield bolts that receive tight torque until they settle. Next lower the vehicle while refilling the engine oil.