KIT-HYD CYLINDER SEAL 8T1381 - Caterpillar

Woodward UG-8 Governor - (Electric Set Application When Frequency Control is Critical.)
There is no direct mechanical link between the flyweights and fuel rack. Rack movement is accomplished by a hydraulic piston which is pilot operated by combined action of the governor flyweights and a compensating piston.
WOODWARD UG-8 GOVERNOR
1-Synchronizing motor. 2-Synchronizer knob. 3-Speed droop knob. 4-Compensating pointer. 5-Synchronizer indicator. 6-Load limit knob. 7-Plug.Engine RPM is controlled by changing the compression of the flyweight spring. An A.C. motor (1) mounted to the top of the governor provides for remote control of the spring. A synchronizer knob (2) on the governor dial panel provides control of the same function (engine RPM). The synchronizer indicator (5) directly below the synchronizer knob, indicates the number of synchronizer knob revolutions and resulting spring compression.A speed droop knob (3) provides a means of changing the difference between FULL LOAD RPM and HIGH IDLE (unloaded) RPM. Any difference between HIGH IDLE RPM and FULL LOAD RPM is called "DROOP" and this difference in RPM divided by the FULL LOAD RPM is called "DROOP PERCENTAGE." At zero droop the UNLOADED and LOADED RPM are equal. Providing droop control allows the use of two or more electric sets to power a common load (in parallel). Only one of the paralleled electric sets (with zero droop) senses the variation in power demand and immediately provides the increase or decrease in power while the electric set or sets with high droop governors carry a fixed output.A load limit knob (6) is for the operator to manually limit the engine RPM. This knob provides a positive stop to linkage movement, and provides a quick means of local engine shut off. The engine can be idled to allow slow cooling of the systems and then shut off by turning the load limit body first partially and then completely to zero.A compensator adjustment is provided to adjust the governor sensitivity. Detailed information concerning governor adjustments is provided in the TESTING AND ADJUSTING section of this manual.Plug (7) covers a needle valve adjustment screw that allows the technician to bleed air from the governor hydraulic system at initial installation or during lubrication changes. Loosening the screw causes the hydraulic components to reciprocate more rapidly and purge air to the sump. Final adjustment of the needle valve controls governor response. Compensating pointer (4) provides for governor sensitivity adjustment.Pierce Output Shaft Governor
OUTPUT SHAFT GOVERNOR AND HYDRAULIC SERVO MECHANISM
1-Flexible drive cable. 2-Output shaft governor. 3-Terminal lever. 4-Rocker shaft. 5-Rate adjusting screw. 6-Speed change lever. 7-Governor spring. 8-Bumper screw. 9-Link. 10-Lever. 11-Lever. 12-Low speed adjusting screw. 13-High speed adjusting screw. 14-Bracket.The output shaft governor (2) is driven by a flexible cable assembly (1) which connects to the governor drive mechanism on the torque converter. The output shaft governor (2) and hydraulic servo mechanism are connected by means of an adjustable link (9).The output shaft governor acts as an "assistant operator," automatically reducing engine speed, which in turn reduces converter output shaft speed whenever the load on the converter