HYDRAULIC GOVERNOR AND INJECTOR RACK CONTROL ADJUSTMENT
The hydraulic governor is mounted on the 3 and 4-53
NOTE: Overtightening the injector rack control
engines as shown in Fig. 1. The terminal lever return
lever adjusting screws during installation or
spring and the fuel rod are attached to an external
adjustment can result in damage to the Injector
terminal shaft lever. The maximum fuel position of
control tube. The recommended torque of the
the governor load limit is determined by the internal
adjusting screws is 24-36 in-lbs (3-4 Nm).
governor terminal lever striking against a boss that
projects from the governor cover.
2. Remove the governor terminal lever return spring.
3. Remove the fuel rod end bearing or ball joint from
Adjust engines having a hydraulic governor assembly
the terminal shaft lever and the terminal lever from
after adjusting the exhaust valve clearance and timing
the terminal shaft.
the fuel injectors.
4. Place the terminal lever on the terminal shaft so
that the hole for attaching the fuel rod end bearing or
ball joint is in line vertically above the terminal lever
Adjust Fuel Rod and Injector Rack Control
shaft at one half the arc of travel. Do not tighten the
5. Hold the injector rack control tube and the terminal
1. Adjust the inner and outer adjusting screws (Fig. 2)
lever in the full-fuel position and adjust the length of
on the rear injector rack control lever until both screws
the fuel rod until the end bearing or ball joint will
are equal in height and tight on the control tube.
slide freely into the hole of the terminal lever as
Check the clearance between the fuel rod and the
shown in Fig. 3. Tighten the lock nut to retain the ball
cylinder head casting (below the bolt) for at least
1/16" clearance when the injector rack is in the full-
fuel position and the rack adjusting screws are tight. If
the fuel rod contacts the bolt or cylinder head casting,
readjust the screws to obtain the 1/16" clearance.
Fig. 2 - Adjusting Height of Rack Control Lever
Fig. 1 - Hydraulic Governor Mounted on Engine