September 2016
Part No.1272857
GTH-1544
3-41
Section 3 • Repair Procedures
MANIFOLDS
How to Test the Function
Manifold
1 Connect a 0 to 5000 psi / 0 to 350 bar pressure
gauge to port TP1 (boom and steering
functions hydraulic circuit test port).
2 Start the engine.
3 Increase the engine speed to maximum rpm.
4 Moving the joystick, retract the boom.
Result: the pressure gauge reads 3770 psi /
260 bar. The pump is good.
Pressure is not within speci
fi
cation.
Set the valve placed above the manifold.
