The exhaust valves on a four-valve head may be damaged if the valve bridges are
not resting on the ends of the exhaust valves when tightening the rocker arm
bracket bolts (refer to Install Rocker Arms and Rocker Arm shaft). Therefore, note
the position of the valve bridges before, during, and after tightening the bolts.
12. Align the fuel pipes and connect them to the injectors and the fuel connectors. Use socket J 8932-
01 to tighten the connections to 12-15 lb ft (16-20 Nm) torque.
Do not bend the fuel pipes and do not exceed the specified torque. Excessive
tightening will twist or fracture the flared ends of the fuel pipes and result in leaks.
Lubricating oil diluted by fuel oil can cause serious damage to the engine bearings
(refer to Pressurize Fuel System Check for Leaks).
13. Set the injector control tube assembly in place on the cylinder head and install the attaching bolts
finger tight. When positioning the control tube, be sure the ball end of each injector rack control lever engages
the slot in the corresponding injector control rack. With one end of the control tube return spring hooked
around an injector rack control lever and the other end hooked around a control tube bracket, tighten the
bracket bolts to 10-12 lb ft (14-16 Nm) torque.
14. After tightening the bolts, revolve the injector control tube to be sure the return spring pulls the
injector racks out (no-fuel position) after they have been moved all the way in (full fuel position). Since the
injector control tube is mounted in self-aligning bearings, tapping the tube lightly will remove any bind that may
exist. The injector racks MUST return to the no-fuel position freely by aid of the return spring only. DO NOT
BEND THE SPRING. If necessary, replace the spring.
Install the fuel rod and the fuel rod cover (if used).
Remove the covers from the drain holes in the cylinder head.
Install the exhaust manifold and connect the exhaust piping.
Install the thermostat housing and thermostat.
Install the air cleaner or air silencer.
Connect the fuel lines.
Install any other equipment that was previously removed.
Refer to Preparation for Starting Engine First Time and fill the cooling system and lubrication
Before starting the engine, perform an engine tune-up as outlined in Engine Tune-up.