How to use this chapter
This part of Chapter 2 describes repairs that can be performed without removing the engine from the vehicle. If the engine is removed from the vehicle and will be disassembled as described in part G, all preliminary actions for disassembling the engine can be skipped. Note that despite the fact that it is physically possible to overhaul such units as the connecting rod and piston group without removing the engine from the car, these operations are not carried out separately. Usually, some additional operations must be carried out (not counting cleaning of parts and oil channels). For this reason, such operations are classified as basic actions and are described in part G of this chapter.
IN part G describes the removal of the power unit from the vehicle and the repair operations that can then be performed.
Engine Description
The engine is a six-cylinder, in-line, single overhead camshaft mounted in-line ("north-south") with the transmission located at the rear of the car.
The crankshaft is mounted in a cast iron cylinder block on seven main bearings. Axial movement is controlled by thrust half rings installed on each side of the 5th main bearing.
The connecting rods are attached to the crankshaft using horizontally split connecting rod bearings, and to the pistons using floating piston pins secured with retaining rings. Three piston rings are installed on the pistons: two compression rings and one oil scraper ring.
The camshaft is driven by a camshaft sprocket from a single-row chain.
The camshaft is supported in seven bearings on the aluminum alloy cylinder head and actuates the valves via levers called cams.
Oil pump with chain drive from the front of the crankshaft.
Repair operations available without removing the engine from the vehicle
Without removing the engine from the vehicle, it is possible to perform the following work:
- a) Cylinder head - removal and installation.
- b) Camshaft drive chain covers and sprockets - removal and installation.
- c) Camshaft - removal and installation.
- d) Pallet - removal and installation.
- d) Camshaft drive belt - removal and installation.
- e) Removal and installation of connecting rod bearings, connecting rods and pistons*.
- g) Oil pump - removal and installation.
- c) Powertrain mounts - replacement.
- i) Flywheel/drive faceplate - removal and installation.
* To successfully complete this operation, it is recommended to remove the engine.