Question 1

How to Service a Rod Bearing on Buick Century?

Accepted Answer

To replace the connecting Rod Bearing, the Oil Pan, Oil Pump and the Crankshaft oil deflector are removed in the first place. Rotate the Crankshaft until the Piston and rod assembly to be maintained is at bottom dead center (BDC), making sure you mark the connecting rod and its cap with matchmarks or numbers for accuracy of reassembly. Take off the connecting rod nuts, the connecting rod cap, the lower connecting Rod Bearing, and do not forget to apply a thread protector to protect the Crankshaft journal. Next, install the connecting rod bolt guide set (J5239) allowing the Piston and connecting rod to be raised up the cylinder so to get to the upper connecting rod that is to be taken out next. Cleaning oil off the connecting rod bearings and Crankshaft connecting rod journal, inspect the connecting rod bearings, connecting rod cap, connecting rod and Crankshaft connecting rod journal. For installation, meet the connecting Rod Bearing's upper part, install the connecting rod and apply its inside surfaces with the new engine oil. By using the connecting rod bolt guide set (J5239), pull the Piston and rod assembly down to the Crankshaft and remove the guide set after which install the lower connecting Rod Bearing in the connecting rod cap, lubricate their inside surfaces with new engine oil as well. I would recheck the angle with electronic torque angle meter (J36660-A) hooked to the connecting rods and turn the nuts an additional 75 degrees while tightening to 20 nm (15 ft. Lbs.) on the lower connecting rod nut and bearing. Measure the connecting rod clearance by loading all the connecting rod bearings into the engine, and tapping each of the connecting rods parallel to the crankpin to decay clearance, follow by measuring the side clearance between the connecting rod caps with the feeler gauge or dial indicator. Lastly, fit the Crankshaft oil deflector, Oil Pump, and Oil Pan.

Question 2

What additional engine repair information can be found for the service and repair of the connecting rod bearing on Buick LeSabre?

Accepted Answer

For information on repairing and servicing bearing on connecting rods, additional engine repair directions are available elsewhere. When an internal engine component is not given a special service procedure, it shows that the manufacturer has not prepared one. To do engine overhaul, important steps in unit repair include service operations, machining, cleaning, inspection and fitting, including boring and honing the cylinder, fitting connecting rod with bearings, crankshaft with bearings and camshaft bearings, disassembling the connecting rod and Piston, cylinder head, valve-related components and Oil Pump, fitting in Piston and rings and fixing thread damage, as well as valve and seat grinding tasks found during Cylinder Head assembly. Chain, belt and gears are the main parts in timing components service.

Question 3

How to Service a Rod Bearing on Buick Regal?

Accepted Answer

In replacing the connecting Rod Bearing, first you will have to remove the Oil Pan and the Spark Plug(s) from the cylinder(s) being serviced. Has the position of the connecting rod to be serviced at bottom dead center (BDC) by rotating the Crankshaft, then take off the connecting rod cap bolts to remove the connecting rod cap together with the lower connecting Rod Bearing but remember to keep the bearings with the original connecting rod and cap for reassembling. Next, take out the lower connecting Rod Bearing from the connecting rod cap and compress the lower end of the connecting rod with the connecting rod assembly guide which is (J 41507). Through the use of the guide, push up the connecting rod and Piston for access to the upper connecting Rod Bearing; this should be dislodged. Clean off the oil from the bearings and check them, also measure the bearing clearance. For installation, oil the connecting rod cap bolts in clean engine oil, bear with clean engine oil. Install the upper connecting Rod Bearing, then use the connecting rod assembly guide (J 41507) to pull down the Piston, connecting rod, and upper connecting Rod Bearing before removing the guide.mount the lower connecting Rod Bearing onto the connecting rod cap, and the connecting rod cap, making sure that the connecting rod cap bolt holes and mating surfaces are clean and dry. Mount the connecting rod cap bolts, tightening them to 27 nm (20 ft. Lbs.) but using the electronic torque angle meter (J 36660-A) jogging them an additional 50 degrees. Examine binding by prying the connecting rod back and forth, if necessary, loose and retighten the connecting rod cap bolts. Measure the connecting rod side clearance, then re-install the Spark Plug(s) and the Oil Pan, then checking for oil pressure and leaks.

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