Technical data for the overhaul of 3.1 liter engines General characteristics RPO Code - LG6 VIN code - D The working volume of the cylinders is 189 cubic meters. inches Cylinder Compression Pressure - Minimum 100...
Technical data for overhaul of 3.8 liter engines General characteristics RPO code - L27 VIN code - L The working volume of the cylinders is 231 cubic meters. inch Cylinder Compression Pressure - Minimum 100...
General information about engine overhaul This part of Chapter 2 describes the basic overhaul of cylinder heads and engine internals. The information provided includes tips for preparing for a major...
Engine overhaul is a must Determining whether and when an engine overhaul is necessary is not always easy, as a number of factors must be taken into account to make this decision. High...
Cylinder compression check 1. Compression test will give information about the mechanical condition of the top of the engine (pistons, rings, valves, cylinder head gaskets). More...
Removing the Engine — Precautions If you decide to remove the engine for overhaul or other repair work, then you must first do the following. It is extremely important to choose a suitable...
Removal and installation of the engine Warning 1. Carefully study the following guidelines to familiarize yourself with the necessary operations before starting work. In addition, you will have to...
Engine overhaul options When overhauling an engine, the owner has several options to choose from. The decision to replace the cylinder block, pistons with connecting rods and the...
Engine Overhaul — Disassembly Sequence 1. Disassembly and work with the engine are greatly simplified when installing the engine on the stand. Before installing the engine on the stand, it is...
Disassembly of the cylinder head Note. As a rule, new or remanufactured cylinder heads for most engines are available from auto parts stores. Due to the fact that some special tools are...
Cleaning and checking the cylinder head 1. A thorough cleaning of the cylinder heads and valve parts, followed by a detailed inspection, will establish the amount of work required on the valve train...
Valve maintenance 1. Since valve maintenance is a complex job and requires special tools and equipment, this job, commonly referred to as "valve bulkhead", must be carried out...
Cylinder head assembly 1. Whether or not you took the cylinder head to a valve rebuild shop, make sure it is clean before reassembly. 2. If you gave the cylinder head for a valve...
Removing pistons and connecting rods Note. Before removing the pistons and connecting rods, remove the cylinder heads, oil pan and oil pump following the appropriate sections in part 2.1 of...
Removing the crankshaft Note. The crankshaft can only be removed after the engine has been removed from the vehicle. It is further assumed that the flywheel, anti-vibrator, timing...
Cleaning the cylinder block 1. Remove the main bearing caps and remove the bearing shells from the caps and cylinder block. Label the bearings indicating which cylinder they came from and...
Checking the block of cylinders Note. The manufacturer recommends checking for distortion in the bolt holes on the block, and for concentricity and alignment of the main bearing holes. Since...
Cylinder honing 1. Before assembling the engine, the cylinders must be honed to ensure the correct fit of the piston rings and thus the best possible sealing of the combustion...
Checking pistons and connecting rods 1. Before starting the check, the pistons in the assembly with the connecting rods must be cleaned, and the old rings removed from the pistons. Note. Always...
Checking the crankshaft 1. Remove any burrs from the crankshaft oil holes with a block, file or scraper (see illustration). 19.1. The edges of the oil holes must be rounded to avoid...
Engine Overhaul — Assembly Sequence 1. Before assembling the engine, make sure that you have all the required new parts, gaskets and seals, as well as the following tools and materials: Ordinary...
Installation of piston rings 1. Before installing new piston rings, check the gaps in the ring lock. It is assumed that the clearances in the piston ring groove have already been checked...
Installing the camshaft and balance shaft Camshaft 1. Lubricate the bearing journals and camshaft lobes with molybdenum based grease or special camshaft grease (see illustration). 24.1. Be sure to...
Replacement of a back epiploon of a cranked shaft 1. Remove the engine with gearbox and subframe and separate the engine from the gearbox (see section 5). 2. Remove the flywheel ( see section 27 ). 3. Remove...
Removal and installation of a flywheel 1. Remove engine with gearbox and subframe if not already done ( see section 5 ). Separate the engine from the gearbox. 2. If the dowel pin is missing (see...
Initial start-up and run-in after overhaul Attention! Have a fire extinguisher handy when starting the engine for the first time. 1. When the engine is installed in the vehicle, double check the oil and...