5466-351 WOODWARD

Speed Setting Shaft Linkage 

Attach the speed setting linkage to the governor speed setting shaft. Typically, 

there will be a 50 rpm speed change for each degree of speed setting shaft 

rotation, however this may vary depending on the speed setting spring used in 

the governor. Maximum and minimum speed stops are adjusted during factory 

calibration of the unit. 

Oil Supply 

In general, the oil used in the prime mover will be satisfactory for use in the 

governor. 

Fill the governor with clean, non-corrosive, oxidation and rust inhibiting oil that 

has minimum foaming or air retention qualities, and a viscosity of 100–300 SUS 

(Saybolt Universal Seconds) at operating temperature (typically 140–200 °F/ 

60–93 °C). Fill to the line on the sight glass (approximately 2.3 US quart/2.2 L). 

After start-up, and when the oil is at operating temperature, again check the oil 

level and add more oil if necessary. Oil should be visible in the sight glass at all 

times. 

Oil Viscosities 

Table 2-1 shows the viscosity of oil at the different operating temperatures. The 

pour point (low temperature) is shown on the left and the temperature at which 

the performance of the oil begins to decrease is on the right side. 

The governor will operate at temperatures near the pour point of the oil, but 

governor operation will be slow, and may be unstable. Do not operate the 

governor at a temperature less than the pour point of the oil. 

Operating the governor at temperatures greater than the high limit (50 SUS), will 

decrease the stability of the governor, and may result in an inability to restart hot. 

Operating the governor at a temperature greater than the point at which the 

performance of the oil decreases can cause governor failure. 

For specific oil recommendations, see manual 25071, Oils for Hydraulic Controls. 

Start-up 

Be sure all of the correct installation procedures have been followed. Start the 

engine according to the engine manufacturer instructions.