Repair of a removed engine from a car Chevrolet Tahoe 1
Engine overhaul technical data Dimensions and clearances in mm. Total information Compression in cylinders (all engines) — 9.84 kgf/cm 2 The maximum pressure difference in the cylinders is... There is 1 comment
General information about engine overhaul This Chapter describes the procedure for dismantling and overhaul of 6 and 8-cylinder engines with a cylinder capacity of 4.3, 5.0, 5.7 and 7.4 liters....
Oil pressure measurement 1. Oil pressure gives an indication of the wear of engine parts (connecting rod and main bearings, oil pump, etc.). The most accurate readings are provided by...
Engine diagnostics with a vacuum gauge 1. Vacuum measurement is a reliable and relatively cheap way to diagnose an engine (see photo). According to the readings of the vacuum gauge, you can get an...
Checking compression in the engine cylinders 1. The results of the compression test in the engine cylinders allow us to judge the condition of the engine parts (pistons, rings, valves and seats, cylinder...
Dismantling the power unit — safety measures 1. The engine is removed from the engine compartment by lifting, so lifting equipment must be sized for the weight of the engine. Work should be carried out...
Engine overhaul — general notes 1. To determine the amount of work to be done, check the compression in the engine cylinders. Also check the tests with a vacuum gauge and determine the nature...
Engine — removal and installation 1. Remove the hood. 2. Disconnect the battery from the ground. 3. Drain the liquid from the cooling system. 4. Remove the air filter. 5. Remove drive belts. 6....
Engine Overhaul — Alternatives There are a number of options available for a major overhaul. The determining factor is the condition of the cylinder block, which in some cases it is...
Engine disassembly procedure 1. It is recommended to disassemble the engine on a special stand; in the absence of a stand, fix the engine on a flat area or on the floor. 2. If a...
Cylinder head — disassembly Attention! 1. It seems more appropriate to purchase a new block head than to disassemble, check and repair a used head. 2. Two types of cylinder heads are...
Cylinder head — cleaning and condition check 1. Remove any gasket residue from the split surfaces of the head, being careful not to damage the surfaces. Remove carbon deposits from combustion chambers,...
Valve mechanism — maintenance and repair 1. If the parts of the valve mechanism are in poor condition, then the entire mechanism should be assembled by installing the parts in place on the cylinder...
Cylinder Head — Assembly 1. Before starting the assembly, it is necessary to make sure that the head of the block and its parts are clean, regardless of whether this part was repaired...
Connecting rod and piston group — dismantling Attention! Before removing the pistons and connecting rods, remove the cylinder head, oil pan and oil pump, referring to the relevant sections in Chapter 2,...
Crankshaft — dismantling Comment. Before dismantling the crankshaft, remove the flywheel (or torque converter drive plate), all parts on the crankshaft toe, chain, sump, oil pump and...
Cylinder block — cleaning Attention! If the plugs of the cooling system channels fall into the channel of the cylinder block, then it is usually impossible to remove them. 1. With light...
Cylinder block — check 1. Thoroughly clean the cylinder block before checking. 2. Visually inspect the block for cracks and corrosion. Check the condition of the threads, if...
Cylinder honing 1. For honing, it is recommended to use «brush» with emery balls (see photo). 2. The order of honing is as follows. 1) Clamp the fixture into an electric...
Connecting Rods and Pistons — Checking Condition 1. Carefully clean the pistons from carbon deposits and carefully remove the rings. Attention! When the engine is completely disassembled, the piston rings...
Crankshaft — condition check 1. Wash the crankshaft with solvent and dry, clean the oil channels, clean the journals and deburr (see photo). 2. Check the condition of the shaft journals,...
Main and connecting rod bearings — check 1. Main and connecting rod bearings are subject to mandatory replacement during engine overhaul, however, used bearings should be carefully checked to restore...
Engine Overhaul — Assembly Procedure The following order of assembly of individual components and their installation on the engine is recommended: Piston rings Crankshaft and main bearings Pistons...
Piston rings — installation 1. Check up a backlash in joints of piston rings. It is understood that the gap between the ring and the seat of the groove has already been checked and is...
Pre-lubrication of the engine after overhaul 1. It is recommended that the motors in question be pre-lubricated prior to first start-up. This procedure reduces wear on parts during break-in. For...
Starting the engine after repair and running in 1. After assembly is complete, double check the oil and coolant levels. 2. With the candles turned out and the ignition system turned off, turn the crankshaft...