PLATE 9V7246 - Caterpillar

At operating temperature, the hydraulic oil is hot and under pressure. Hot oil can cause burns. To prevent possible personal injury, release the pressure in the implement hydraulic circuit (the cab tilt cylinder) before any of the hydraulic lines or any of the components are disconnected or removed.
The cab has been tilted for better photo illustration of the counterbalance valves.1. Release the pressure in the implement hydraulic circuit (the cab tilt cylinder) before any of the hydraulic lines or any of the components are disconnected or removed. Release the pressure as follows: a. Move the lever on the tilt valve assembly back and forth several times to release the pressure in the cab tilt cylinder.
Counterbalance Valves Drain the oil from the cab tilt cylinder in a suitable container for disposal.2. Remove counterbalance valve (2) from the retract port of cab tilt cylinder (1).3. Remove counterbalance valve (2) from the extend port of cab tilt cylinder (1). Only the O-ring seals and back-up rings of counterbalance valves (2) are serviced.4. Check the condition of the O-ring seals and the backup rings. If worn or damaged, use new parts for replacement. The following steps are for installation of the counterbalance valves.5. Make sure the two ports and the two counterbalance valves are clean and free of dirt prior to installation in the cab tilt cylinder.6. Install the counterbalance valves in the reverse order of removal. Refer to the topic "Lubricant Viscosities and Refill Capacities" in the "Operation & Maintenance Manual" for the proper filling procedure and the proper levels for the cab tilt cylinder hydraulic system.7. Fill the cab tilt cylinder hydraulic tank with oil to the correct level.