Q: How to remove the Oil Pan in the diesel engine on 1993 Mercedes-Benz 190E?
A: As a part of the removal exercise, there should be a suitable hoist and lifting tackle, a new oil pan gasket, a new oil pan auxiliary section gasket (where necessary), a refitting of front suspension crossmember bolts, etc. Start with removing the battery negative lead (and detaching the engine undershield where possible). Others The front anti-roll bar may be kept in place when mounting bolts are removed. Disconnect the steering damper on the right and the steering drag link on the left and drain the engine oil. Defuel as required and remove the engine movement stop and loosen the two bolts connecting the two parts of the engine mounting damper, to the body right member, on the left side. Disassemble the cooling fan shroud, lay it across the fan blades, disconnect the starter motor earth strap and unbolt the engine speed sensor (as needed). Please disconnect the wiring of the engine oil level sensor as required, and disconnect the engine oil cooler hosing of the rigid pipes but wire the open end so that it will not allow entry of dirt. Connect the engine hoist and lifting tackle to the front engine lifting eye, unbolt the left and right-hand engine mountings to the crossmember and carefully position the engine so rear corners of the cylinder head meet the face of engine compartment bulkhead and do not damage any parts of the engine. Before disconnecting the steering column, loosen the suspension coil springs in front of the vehicle and unscrew the steering column-to-coupling upper clamp bolt. Put a jack and a block of wood under the front suspension crossmember, unscrew the 4 securing bolts, and then drop the entire crossmember assembly onto the shock absorbers, discarding the crossmember securing bolts and taking care not to strain the pipes, hoses and wiring. In models where the oil pan has an auxiliary section that is bolstered to the right hand side off-strip, unscrew the attaching bolts, and take off the oil pan side part of the oil pan, reclaiming the washers and a gasket. Unscrew the two lower engine-to-transmission bolts where applicable, and continue to unscrew and remove oil pan securing bolts, keeping track of the position of one. Reduce the oil pan forwards, beneath the vehicle and retrieve the gasket, rotating the crankshaft as necessary to permit it to go. To refit, remove the remnants of a previous gasket on the oil pan and cylinder block, wipe the surface with a grease-cleaner, and fit a new gasket to it (spreading the grease onto its surface). Form it into place, inserting the bolts into the correct positions and tightening them to the required torque gradually. Refit lower engine-to-transmission bolts, where applicable, refit a separate auxiliary side section, where fitted, with a new gasket and tap the securing bolts. Moving up to front suspension crossmember and attaching it using new bolts and tightening them to recommended torque. Rewatch the steering column to the coupling making sure it fits good and replace the coil springs on the front suspension. Ensure you lower the engine into position with care - reattach the engine mounting bolts, and tighten them to the target torque before removing the lifting tackle and hoist. Refit the engine oil cooler hose ends to the rigid pipes and screw up the clamp bolts, refit the wiring to the engine oil level sensor where it is fitted, refit the starter motor earth strap and engine speed sensor where these are fitted. Reattach the cooling fan shroud, and adjust the engine movement damper, reattach the steering drag link and steering damper and refit the front anti-roll bar. Replace the engine undershield, tighten the engine oil drain plug, reconnect battery negative lead, fill the engine with engine oil and verify the automatic transmission fluid level as per requirement.