Cylinder Block Description; Cylinder Head Description; Crankshaft Description - Jeep Cherokee 2000 Service Manual

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DESCRIPTION AND OPERATION (Continued)

CYLINDER BLOCK

The cylinder block is a cast iron inline four cylin-

der design. The cylinder block is drilled forming gal-

leries for both oil and coolant.

Fig. 3 Cylinder Block—2.5L

1 – CYLINDER BLOCK

CYLINDER HEAD

The cylinder head is made of cast iron containing

eight valves made of chrome plated heat resistant

steel, valve stem seals, springs, retainers and keep-

ers. The cylinder head, valve seats and guides can be

resurfaced for service purposes.

The cylinder head uses dual quench-type design

combustion chambers which cause turbulence in the

cylinders allowing faster burning of the air/fuel mix-

ture, resulting in better fuel economy.

The valve guides are integral to the cylinder head,

They are not replaceable. However, they are service-

The crankshaft is constructed of nodular cast iron.

Fig. 4 Cylinder Head

1 – CYLINDER HEAD BOLTS

2 – CYLINDER HEAD GASKET

3 – CYLINDER HEAD

Fig. 5 Crankshaft—Typical

1 – MAIN BEARING JOURNALS

2 – COUNTER BALANCE WEIGHTS

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