BRACKET AS 1236621 - Caterpillar

Woodward UG-8 Governor
Adjustments
Fuel rack setting is done carefully at the factory. Do not change the fuel rack setting unless it is known to be wrong. See the RACK SETTING INFORMATION for the correct rack setting dimension, high idle and low idle rpm.
Low or High Idle rpm Adjustment
Check the engine LOW or HIGH IDLE rpm with a hand tachometer at the tachometer drive connection. The tachometer drive rotation is one half of engine rpm.1. Put the load limit knob (3) at point 5 to prevent the engine from getting too much fuel.2. If the engine rpm goes too high, the linkage can be easily moved and the fuel rack controlled manually with linkage (4) to keep engine rpm low.3. Start the engine and slowly make an increase in the amount of fuel. When the engine is at operating temperature, turn the load limit knob slowly from 5 to 10. Use synchronizer knob (5) to change the engine rpm, then check the low or high idle stop.4. If the low or high idle stop does not permit the correct rpm, adjustment is necessary. Remove the dial plate.5. Loosen the set screw on synchronizer indicator knob (7) and remove the knob.6. Pull gear (6) out of engagement with gear (2).7. When making adjustment of the high idle rpm, turn synchronizer knob (5) clockwise until the engine is running at the correct high idle rpm. Turn knob (5) counterclockwise for low idle rpm.8. Make an adjustment to the stop for high idle rpm by turning gear (6) clockwise (counterclockwise for low idle) until the gear pin makes contact with idler gear (2). Engage the gears.9. After making adjustment to the idle rpm stop, turn the synchronizer knob to change the engine rpm. Turn it to the stop position and check the idle rpm. Make adjustment if necessary. Make adjustment to the disc of the synchronizer indicator pointer if necessary. With the engine running at high idle, stop the engine by turning load limit knob (3) to zero. Remove the disc for the synchronizer indicator pointer and install it at 12 on the dial plate. This will give an indication of high idle position.
GOVERNOR ADJUSTMENT
1. Terminal lever. 2. Idler gear. 3. Load limit knob. 4. Linkage. 5. Synchronizer knob. 6. Gear. 7. Synchronizer indicator knob.10. Install the synchronizer indicator knob and the dial plate.Fuel Rack Setting
Use the same tools and procedure for adjustment of the rack as shown for a mechanical governor. Make reference to Fuel Rack Setting.Compensating Adjustment
Slow return to normal rpm, after load changes, is the result of wrong compensation adjustments.Make compensating adjustments after the engine and the oil in the governor are at normal operating temperature and with the engine running at no load condition.1. Loose nut (1) and move compensation adjustment pointer (2) to MAX.2. Remove plug (3) and use a screwdriver to open the compensating needle valve three or more turns.3. Let the engine run rough for about 1 1/2 minutes to remove air from the governor oil