Genie GS-2669 RT Service Manual page 128

Section 4 • Repair Procedures
MANIFOLDS
How to Adjust the Platform Up
Relief Valve
(Models without Platform Overload)
Note: Be sure that the hydraulic oil level is within
the top 2 inches / 5 cm of the sight gauge.
1 Connect a 0 to 5000 psi / 0 to 350 bar pressure
gauge to test port #1 on the function manifold.
2 Place the maximum rated load in the platform.
Secure the load to the platform. Refer to
Section 2, Specifications .
3 Turn the key switch to ground control and pull
out the red Emergency Stop button to the on
position at both the ground and platform
controls.
4 Start the engine from the ground controls.
5 Press and hold the lift function enable button
and press and hold the blue platform up button.
Allow the platform to raise completely, then
continue activating the lift function while
observing the pressure reading on the pressure
gauge. Note the pressure. Refer to Section 2,
Specifications .
6 Turn the engine off. Hold the lift relief valve
(item FE) with a wrench and remove the cap.
7 Adjust the internal hex socket. Turn it clockwise
to increase the pressure or counterclockwise to
decrease the pressure. Install the relief valve
cap.
Tip-over hazard. Failure to adjust
the relief valve as instructed will
cause the machine to tip over
resulting in death or serious injury.
Do not adjust the relief valve
higher than specified.
4 - 58 GS-2669 RT • GS-3369 RT • GS-4069 RT
8 Repeat this procedure beginning with step 4 to
confirm the relief valve pressure.
a
FE
c
a test port #2
b test port #1
c platform up relief valve
November 2014
b
Part No. 229753