VARIABLE SPEED MECHANICAL GOVERNOR (ENCLOSED LINKAGE) AND INJECTOR RACK CONTROL
The single-weight variable speed governor is mounted
Disconnect any linkage attached to the governor
on the rear end plate of the engine and is driven by a
gear that extends through the end plate and meshes
with either the camshaft gear or the balance shaft gear,
Back out the buffer screw until it extends
depending upon the engine model.
approximately 5/8" from the lock nut.
After adjusting the exhaust valves and timing the fuel
Clean and remove the governor cover and
injectors, adjust the governor and position the injector
valve rocker cover. Discard the gaskets.
Place the speed control lever (Fig.
1) in the
maximum speed position.
NOTE: Before proceeding with the governor
injector rack adjustments, disconnect
Insert a .006" feeler gage between the spring
supplementary governing device.
plunger and the plunger guide as shown in Fig. 1. If
adjustments are completed, reconnect
required, loosen the lock nut and turn the gap adjusting
adjust the supplementary governing device.
screw in or out until a slight drag is noted on the feeler
Adjust Governor Gap
Hold the adjusting screw and tighten the lock
With the engine stopped and at operating temperature,
nut. Check the gap and readjust if necessary.
adjust the governor gap as follows:
Use a new gasket and install the governor cover
a. Place the cover on the governor housing, with
Fig. 1 - Checking Governor Gap
Fig. 2 - Positioning the Rear Injector Rack