GASKET 7C0338 - Caterpillar

Sudden movement of the machine or release of air or oil under pressure can cause possible injury or death to persons on or near the machine.To prevent possible injury or death, do the procedure that follows before testing and adjusting the Hydraulic System.
Move the machine to a smooth horizontal location. Move away from any machines that are working and any personnel.
Move the transmission control to the NEUTRAL position. Fully raise the truck body or the water tank of the truck.
Activate the parking brakes. Stop the engine.
Permit only one operator on the machine. Either keep other personnel away from the machine, or keep other personnel in the sight of the operator.
Place blocks in front of the wheels and behind the wheels.
Illustration 1 g00523789
Retaining pin for the truck body or the water tank
Install the retaining pin for the truck body or the water tank.
Make sure that the transmission is in the NEUTRAL position.
Make sure that all air pressure and oil pressure is released before any fittings, hoses or components are worked on.
Push on the brake pedal many times until there is no brake air pressure.Visual Checks are the first steps for troubleshooting a problem. The visual checks will determine the problems that can be corrected quickly.