Section 4 • Repair Procedures
November 2014
4 - 58
GS-2669 RT • GS-3369 RT • GS-4069 RT
Part No. 229753
a
b
c
FE
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.
8 Repeat this procedure beginning with step 4 to
confirm the relief valve pressure.
a
test port #2
b
test port #1
c
platform up relief valve
MANIFOLDS
Summary of Contents for GS-2669 RT
Page 169: ...Section 6 Schematics November2014 6 9 Control Panel Circuit Diagram 6 10 ...
Page 235: ...Section 6 Schematics November2014 6 75 6 76 Electrical Schematic GS 4069 RT Gas LPG Models AS ...
Page 238: ...November2014 Section 6 Schematics 6 78 Electrical Schematic GS 4069 RT Gas LPG Models AS 6 77 ...
Page 243: ...Section 6 Schematics November2014 6 83 Electrical Schematic GS 4069 RT Diesel Models AS 6 82 ...
Page 246: ...November2014 Section 6 Schematics 6 86 Electrical Schematic GS 4069 RT Diesel Models AS 6 85 ...
Page 251: ...Section 6 Schematics November2014 6 91 Electrical Schematic GS 4069 RT Gas LPG Models CE 6 92 ...
Page 254: ...November2014 Section 6 Schematics 6 94 Electrical Schematic GS 4069 RT Gas LPG Models CE 6 93 ...
Page 259: ...Section 6 Schematics November2014 6 99 6 100 Electrical Schematic GS 4069 RT Diesel Models CE ...
Page 267: ...Section 6 Schematics November2014 6 107 Hydraulic Schematic GS 2669 RT and GS 3369 RT 6 108 ...
Page 270: ...November2014 Section 6 Schematics 6 110 Hydraulic Schematic GS 4069 RT 6 109 ...