Table of Contents
Advertisement
.MAINTENANCE PROCEDURE
METHOD FOR RELEASING INTERNAL PRESSURE IN HYDRAULIC CIRCUIT
The hydraulic circuit is always under pressure, so release the pressure inside the circuit before
inspecting or replacing the piping or hoses.
If the pressure is not released, high-pressure oil will spurt out and may cause serious personal injury.
The parts and oil are at high temperature after the engine is stopped, and may cause serious burns.
Wait for the temperature to go down before starting the operation.
When the oil filler cap is removed, oil may spurt out, so turn the cap slowly to release the internal
pressure before removing the cap.
1. Stop the machine on firm level ground.
2. Within 15 seconds after stopping the engine, turn the start-
ing switch to the ON position, and operate the control levers
(work equipment, travel) fully in each direction to release
the internal pressure.
3. Loosen oil filler cap (F) at the top of the hydraulic tank
slowly to release the internal pressure.
4-38
WARNING
MAINTENANCE
0.
Advertisement
Table of Contents
