YOKE 6Y2939 - Caterpillar

Unpacking
Be careful when unpacking the electronic driver. Check the driver for signs of damage, such as bent or dented panels, scratches, and loose or broken parts. Notify the shipper and Woodward if damage is found.Mounting
The driver box is designed to operate within an ambient temperature range of -40 to +70°C (-40 to +158°F).The driver is capable of withstanding the following vibration specifications:Shock - US Mil Std 810C, M516.2, PL 40G, 11 mS sawtoothVibration - Random Vibration 0.04 G2/Hz WGC RV2If the application has a higher vibration level than specified (0.04 G2/Hz), vibration isolators must be used to keep the levels below the given levels.Mount the driver in a location with space for adjustment and wiring access. Do not expose the driver to sources of radiant heat such as exhaust manifolds or turbochargers. Mount the driver close enough to the actuator and battery to meet the wire length requirements (see wiring requirements in Chapter 6).The driver will generate some heat, so surfaces must be open to normal air movement. No special ventilation is required.Ideally, the driver should be mounted flush to the metal side of a control cabinet, protected from the weather and high humidity, and close to the engine being controlled. Do not install the driver directly on the engine. The location should provide protection from high-voltage or high-current devices, or devices which produce electromagnetic interference. After initial adjustments are completed, access to the driver will not be required for normal engine operation. Actuator Installation - Thermal
The actuators are designed for installation on the engine. The actuators will generate heat, especially when stalled or during other conditions requiring maximum torque output. Maximum operating temperature for the ProAct II actuator is 100°C (212°F).The installer must consider the heat conductivity of the installation bracket, and the operating temperature of the ultimate heat sink to which the bracket will be attached. Generally the heat transfer abilities of aluminum and low-carbon steel are better than those of high-carbon steel or stainless steel.Uninhibited air flow over the heat-exchanger fins on the side of the actuators will help control possible heat problems. Keep the fins as clean as possible to improve heat transfer. Do NOT paint the fins, since this will reduce the heat transfer efficiency.If operating temperature is a concern, contact Woodward for more information. Fuel Position Stops
Diesel Stops. Diesel installations will generally use the fuel system minimum and maximum position stops. Diesel engine racks are normally designed to provide the minimum and maximum stops without binding. The actuator's stops must not prevent the actuator from driving the fuel linkage to the minimum and maximum positions. The linkage should be designed to use as much actuator travel as possible, without preventing minimum and maximum fuel positions (see Figure 3-1). Gas Engine Stops. Butterfly valves in carburetors will often bind if rotated too far toward minimum or maximum. For this reason, the stops in the actuator should be used at both minimum and maximum positions. Note that the stops will allow up to 3