Preparatory actions and a list of repair procedures without removing the engine from the car (Nissan Maxima A32)

Clean the engine compartment and the outside surfaces of the power unit using one of a wide range of special solvents. This treatment will prevent dirt from getting inside the engine.

If necessary, depending on the nature of the work to be done, the bonnet can be removed to provide free access to the components to be serviced (see Chapter Body). Cover the car fenders with special covers or just old blankets to avoid accidental damage to the paintwork.

If a suspected loss of vacuum or leakage of oil, coolant, exhaust gases, etc. indicates that the appropriate gaskets or seals need to be replaced, virtually any of the listed procedures can be performed without removing the engine from the vehicle (in situ). This applies to procedures for replacing the intake manifold and exhaust manifold gaskets, oil pan, cylinder heads, and both crankshaft seals.

Dismantling, repair and installation of external components and attachments such as intake manifolds, exhaust manifolds, oil pan, oil and water pumps, starter, generator, ignition distributor and fuel system components can also be performed in situ.

Since the cylinder heads can be removed from the engine without first removing the power unit, valve train maintenance can also be performed on the vehicle. In addition, camshafts, timing belts and timing gears are usually replaced in situ.

In an emergency, without dismantling the power unit, it is also possible to repair and replace piston rings, pistons, connecting rods and connecting rod bearings of the crankshaft. However, this opportunity should not be abused due to the difficulties associated with the need to maintain cleanliness and carry out a number of preparatory procedures.