Cylinder Stop Valves - JLG X17JPLUS Operator, Safety, And General Maintenance Manual

SAFETY DEVICE
All platform distributors have a pressure relief valve that limits the pressure in‐
side the system to the value set for the same valve. These valves are set when the
platform is tested by qualified personnel and must not be tampered with for any
reason whatsoever.
8.3. CYLINDER STOP VALVES
Fig. 11 Cylinder stop valves
The stabiliser cylinders have a double stop valve which in case of system break‐
down or hose breakage stops the cylinder preventing dangerous platform insta‐
bility situations. All cylinders that move the aerial part of the platform structure
are fitted with a stop valve which in case of system breakdown or hose breakage
stops the cylinder preventing the basket from falling due to gravity.
These valves are calibrated in the platform inspection phase by the
constructor and must not be tampered with for any reason.
42 Boom Lift Models X17JPLUS
MUX17JP021602
Fig. 12 Cylinder stop valves