TM 5-2420-230-24-2
Cylinder Head - General Information
B3.9 and B5.9 Series Engines
Page 2-2
Section 2 - Cylinder Head - Group 02
Cylinder Head - General Information
Cylinder Head and Valve Train
The cylinder head is a one-piece, cross flow design with two
valves per cylinder. The head has integrally cast valve
guides and hardened valve seat surfaces that can be re-
paired in a machine shop using the appropriate service
parts.
The cylinder head has a cast intake manifold, fuel filter
head, thermostat housing and an internal water bypass.
The injectors are mounted in the head for direct injection
into the cylinders. Fuel filter head is remote for engines with
in-line fuel injection pump.
Separate pedestals for each cylinder are to support and
route oil to the rocker levers.
The cylinder head gasket is a specialized metal design with
a printed o-seal on both sides around the water holes. An
embossment in the gasket seals the cylinder bores. As
discussed in the Cooling System, the gasket also provides
orifices to control coolant flow.
L-798