If I were you, I would loosen the pan bolts and align it t be flush with the back of the block so the bellhousing is flush against the pan and the block for a easy bolt together. . Step 9: Torque Oil Pump Bolts (Torque Fasteners) 32. Notice 31. The 5/16-inch bolts require 13.5 foot-pounds of torque to join properly with the engine block. Install the new oil pan gasket into the groove in the oil pan. A 7/16-inch socket and 3/8-inch-drive torque wrench is used to tighten most of the bolts to 12 ft-lbs. Clean and inspect the oil pan as necessary. The oil pan gasket and oil pan must be installed and the fasteners tightened while the adhesive is still wet to the touch. Once you have the oil pump and drive in proper alignment, use the bolt that enters into the pump from the top to help hold it in place while the other bolts are installed. The rear bolt hole locations of the oil pan provide mounting points for the transmission bellhousing. I cranked the bolts down pretty good. Lubricate bolts with 10W-30 engine oil and use a torque wrench. Refer to Oil Pan Cleaning and Inspection. The oil pump attaches with 65 foot-pounds of torque. Simply lay it onto the gaskets and use a total of 18 bolts to fasten it to the block and timing cover. Too tight is as bad as too loose. The oil pump on a Y-block is held in place by three bolts. Step 8: Install Oil Pump Bolts. oil pan alignment is critical on LS engines. So my upper oil pan gasket was leaking I go to change it and during installation I noticed my torque wrench was broken. The drain plug requires 20 foot-pounds of torque to join properly with the oil pan. . NOTE: Wheel bolt torque is critical. Refer to Replacing Engine Gaskets. See all 21 photos Slip the oil pump over the crank snout and with lightly tightened bolts, turn the crank roughly four or five revolutions. From what I can tell, the mercruiser-specified aluminum oil pan is identical to the oil pan that is made for many trucks and SUV's, and appears to have the exact same bolt pattern on the end that faces the flywheel cover (bell housing). Discard the gasket and rivets. The situation you are in is why the pan itself has this warning casted into it. Clean the base of the engine block. The alignment of the structural oil pan is critical. alignment in order to maximize overall track life. This has been a little frustrating to research. Will it be alright or should I get a new torque wrench and check them? This is a discussion on Oil Pan Alignment within the External Engine forums, part of the LSx Technical Help Section category; Everything I read claims that oil pan alignment is critical. Note: The oil pan alignment must always be flush or forward no more than 0.011 inch (0.3mm) from the rear face of the engine block. Cylinder Head Dowel Pins Cylinder head alignment dowel pins assure proper gasket and casting alignment for an accurate seal and PermaDryPlus® oil pan gasket sets. Valve Cover Load Spreaders® Load Spreaders distribute the clamping force more evenly on the valve cover flange. Also, see the appropriate operator’s manuals for track maintenance, alignment procedures, and specific bolt torque by model. Then torque the oil … I want to install an aluminum oil pan on my mercruiser 4.3 vortec (1997 model). Step 22: Install Oil Pan (Torque Fasteners) The oil pan is another component that the machinist should have thoroughly cleaned for you. Oil Pan Alignment. Do not tighten the bolts at this time. 30. Remove the oil pan gasket€(1) from the oil pan€(2). This results in a better seal between the valve cover and the head. In GM's 4.3 L V8, the 1/4-inch bolts joining the oil pan with the engine block require 7.5 foot-pounds of torque.
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