engine oil
to support crankshaft
Main bearings are between crankshaft and main journals (engine block), rod bearings are between connecting rods and crankshaft and thrust bearings ensure crankshaft does not slide horizantally between journals they hold crank in place.
Plastigauge
Main bearings are what the crankshaft rotates on.
Roller bearing
main two type of bearing used in steam turbine:(1)thrust bearing (2)general bearing
Crankshaft used to transforms the linear motion of the pistons into a rotational motion that is transmitted to the load.Piston connected with crankshaft by connecting rod.Each units of the crankshaft supported by crank bearing(usually journal bearing) In multi-cylinder engine every units piston connected with crankshaft create rotational motion according to firing order.Crank shaft alignment is necessary for smooth engine operation.
KY Jelly can be used as a lubrication, and is available at drug stores.
If you put too much oil in the engine, it raises the oil level high enough that the crankshaft touches it. The crankshaft will whip the oil, aerating it. This air in the oil will destroy your engine bearings. The bearings have a very thin layer of oil on them which keep the bearing and whatever the bearing is against from locking up. The air will remove the oil layer from the bearing and the bearing will then rub against whatever engine part it is used for. The bearing will then be shredded and metal parts will go about destroying your engine. Moral of the story, don't over fill your oil.
Lotion
Depends on what type of vibration damper (crankshaft pulley) you have. Your local auto parts store probably has the one you need and can rent it to you.
An aligning bar is used to determine whether the alignment of the crankshaft bores has warpage or not. All the main bearings are removed and the correct size aligning bar is placed onte the bearing saddles.