GOV SEALINGG 5P1660 - Caterpillar

Do not remove any valve, hydraulic fitting or valve core, nor disassemble any parts until pressure has been released. Failure to release pressure can cause personal injury or death.
The following steps are to release the pressure in the system:a. Shut off engine.b. With operator in seat and bucket on ground, engage selector valve (pilot control) and actuate an implement control lever about ten times to release pressure in hydraulic system.c. Press the relief valve button on the hydraulic tank breather to release the tank pressure.
Hydraulic oil that is under pressure and hot can cause bodily injury. Move the control levers to relieve pressure in the hydraulic system. Let the hydraulic oil become cool before any lines are disconnected in the hydraulic system.
Located in the pump room behind the gear pump group (pump drive lubrication)1. Disconnect power shift sensor wiring harness (3) at the electrical connection. Remove bolt (2), the washer, and the clips that hold electronic control assembly (1) to the panel assembly. Remove power shift sensor (4) from the tube assembly. The following steps are for the installation of the sensor (powershift pressure). Check all components for wear or damage and replace if necessary. Apply 1U-6396 O-ring Compound to all O-ring seals prior to installation, if applicable.2. Connect powershift sensor wiring harness (3) at the electrical connection. Install bolt (2), the washer, and the clips that hold electronic control assembly (1) to the panel assembly. Install powershift pressure sensor (4) to the tube assembly.