cover (59) with lock washers (58) and screws (57).
Install injectors (16). Be sure dowels in the injector body line up with alignment holes in the cylinder head.
Lightly install injector clamps (15) and secure with screws (13) and washers (14). Be sure clamps do not interfere
with the injector follower spring or the exhaust valve springs. Tighten the injector clamp screws (13) to 20--25 ft-lb
(2734 N. m).
Assemble bushings (39) and rocker arms (36), (37) and (38) on rocker shafts (41). Install shaft plugs (40).
Lubricate all rocker arm parts with engine oil before assembly.
Install rocker arm brackets (35) on the shaft and place the assemblies into position on the head. Install bracket
bolts (12) but do not tighten the bolts at this time.
Install bushing (31), bushings (30) and cevis pins (29). Install bridges (34) and secure with bushings (30) and
bridge pins (33).
Refer to figure 4-1. Be sure tops of pistons are clean and free of foreign material. Be sure that each push rod is
threaded into the clevis until the end of the push rod projects through the clevis. Be sure that the groove and
counterbores in the top of the cylinder block are clean and smooth.
Install a new compression gasket (19) on each cylinder liner. Place new seal rings (20), (21) and (22) in the
counterbores of the water and oil holes in the cylinder block. Install a new gasket (18) in the milled groove on the cylinder
Install the head assembly on the cylinder block without disturbing the gaskets and seals. Use appropriate guide
studs on each end of the block to assist in aligning the head.
Make a final visual inspection that the gaskets and seals are in place before lowering the cylinder head on the block.
Compression gaskets and seals jarred or shifted out of place will cause leaks and blow by with poor engine performance.
Install head bolts (17). Begin on the camshaft side of the head to take up tension in the cam follower springs by
tightening the bolts lightly. Finally tighten the bolts to 170--180 ft-lb (230-244 N m), about one-half turn at a time, in the
sequence shown in figure 4-7.
Cover the oil drain holes in the cylinder head to prevent dirt and foreign material from entering the holes.
Tighten rocker arm bracket bolts (12) to 5055 ft- lb (68--75 N. m).
Figure 4-7. Head bolt tightening sequence
It is possible to damage the exhaust valves if the valve bridges are not resting on the ends of the exhaust valves when
tightening the rocker arm bracket bolts. Refer to figure 4-8.