3-38
Z
®
-33/18
Part No. 1268514GT
January 2020
Section 3 • Repair Procedures
1 Turn the machine off. Locate the proportional
relief valve (item BW) on the function manifold.
Remove the coil nut and remove the coil from
the valve cartridge and set aside. Do not
disconnect the coil electrical connector.
2 Connect a 0 to 5000 psi / 0 to 350 bar pressure
gauge to the test port TP1 on the function
manifold.
3 Turn the key switch to ground controls.
4 With the primary boom fully lowered, move and
hold the function enable toggle switch to either
side and hold the primary boom up/down toggle
switch in the down direction. Observe the
pressure reading on the pressure gauge. Refer
to Section 2,
Specifications
.
5 Turn the machine off. Hold the primary boom
down relief valve with a wrench and remove the
cap (item BP).
6 Adjust the internal hex socket. Turn it clockwise
to increase the pressure or counterclockwise to
decrease the pressure. Install the relief valve
cap.
Result: The relief pressure meets specification.
Continue to step 7.
Result: The relief pressure does not meet
specification. Repeat this procedure beginning
with step 3.
WARNING
Tip-over hazard. Do not adjust
the relief valve higher than
specified.
7 Turn the machine off. Remove the pressure
gauge and install the proportional relief valve
coil.
1 Turn the machine off. Locate the proportional
relief valve (item BW) on the function manifold.
Remove the coil nut and remove the coil from
the valve cartridge and set aside. Do not
disconnect the coil electrical connector.
2 Connect a 0 to 5000 psi / 0 to 350 bar pressure
gauge to the test port TP1 on the function
manifold.
3 Turn the key switch to ground controls.
4 With the secondary boom fully lowered, move
and hold the function enable toggle switch
to either side and hold the secondary boom
up/down toggle switch in the down direction.
Observe the pressure reading on the pressure
gauge. Refer to Section 2,
Specifications
.
5 Turn the machine off. Hold the secondary boom
down relief valve with a wrench and remove the
cap (item BP).
6 Adjust the internal hex socket. Turn it clockwise
to increase the pressure or counterclockwise to
decrease the pressure. Install the relief valve
cap.
Result: The relief pressure meets specification.
Continue to step 7.
Result: The relief pressure does not meet
specification. Repeat this procedure beginning
with step 3.
WARNING
Tip-over hazard. Do not adjust
the relief valve higher than
specified.
7 Turn the machine off. Remove the pressure
gauge and install the proportional relief valve
coil.
MANIFOLDS
Содержание Genie Z-33/18
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