2-22 Published 11-22-2016, Control # 345-12
HYDRAULIC SYSTEM RT9130E-2 SERVICE MANUAL
*This setting is for Hoist “UP” and “DOWN” circuits.
NOTE: Procedures A through M in the following text
correlate with Figure 2-7 through Figure 2-16.
Procedure A - For Setting Main Directional
Control Valve Relief Pressures
1. Remove cap and install pressure gauge on the main
directional control valve system pressure port
(Figure 2-7).
2. Completely retract the Lift Cylinder or disconnect and
cap the hose from the Main Directional Control Valve
Retract port "A" to the lift cylinder. With the engine
running @ FULL RPM, attempt to operate Lift DOWN,
adjust the Load Sense relief in the Main Directional
Control Valve to 4000 ±50 PSI (27.6 ± 0.4 MPa).
Remove cap and re-connect plumbing. Remove
pressure gauge.
3. With boom installed, completely RETRACT the boom or
with out boom installed, disconnect and cap hoses from
the Main Directional Control Valve Retract ports "A" to
each Telescope cylinder. In the Cab, on the over head
console, set the Boom Mode switches to "Manual" and
"IM". With the engine running @ FULL RPM, attempt to
Telescope IN, adjust the Telescope Inner Mid port "A"
relief in the Main Directional Control Valve to 3500 ± 50
PSI (24.1 ± 0.4 MPa). Set the Boom Mode switches to
"Manual" and "CM", then adjust the Telescope Center/
Outer Mid port "A" relief in the Main Directional Control
Valve to 3500 ± 50 PSI (24.1 ± 0.4 MPa). Remove caps
and re-connect plumbing.
4. With Boom installed, telescope mid section full out or
with out boom installed, disconnect and cap the hoses
from the Main Directional Control Valve Inner Mid
Extend port "B" to each Telescope cylinder. In the Cab,
on the over head console, set the Boom Mode switches
to "Manual" and "IM". With the engine running @ FULL
RPM, attempt to Telescope OUT, adjust the Telescope
Inner Mid port "B" relief in the Main Directional Control
Valve to 3000 ± 50 PSI (20.7 ± 0.4 MPa). With the hoses
still capped, continue on to step 5.
5. In the Cab, on the over head console, set the Boom
Mode switches to "Manual" and "CM". With the engine
running @ FULL RPM, Telescope full OUT, or
disconnect and cap hoses and adjust the Telescope
Center/Outer Mid two stage port "B" relief (see
Figure 2-7) in the Main Directional Control Valve to 2500
± 50 PSI (17.2 ± 0.4 MPa). If adjustment is required,
loosen the Low Pressure Jam Nut, and then turn the
Low Pressure Adjustment Nut until the relief setting is
reached and tighten the jam nut. With the hoses still
capped, and the Boom Mode switches set to "Manual"
and "CM", continue on to step 6.
6. With Boom installed, telescope outer mid fully out or with
out boom installed, disconnect the Deutsch connectors
for the Telescope Center/Outer Mid 2-way solenoid and
the Swing Brake Pressure switch. Actuate the Telescope
Center/Outer Mid 2-way solenoid by connecting it to the
"Battery Hot" wire harness for the Swing Brake solenoid.
With the engine running @ FULL RPM, attempt to
Telescope OUT, adjust the Telescope Center/Outer Mid
two stage port "B" relief in the Main Directional Control
Valve to 3000 ± 50 PSI (20.7 ± 0.4 MPa). If adjustment is
required, loosen the High Pressure Jam Nut, and then
turn the High Pressure Adjustment Nut until the relief
setting is reached and tighten the jam nut. Re-connect
the Deutsch connectors on both solenoids to their
correct wire harness. Remove caps and re-connect
telescope plumbing.
7. Remove pressure gauge from the System pressure Test
Port & re-install cap.
Cab Tilt Relief 2500 (17.2) ± 50 (0.4) Counterweight Removal Valve
Counterweight Removal Pin Relief-
Extend
2500 (17.2) ± 50 (0.4)
Counterweight Removal Valve-Port A
Counterweight Removal Pin Relief-
Retract
1600 (11.0) ± 50 (0.4)
Counterweight Removal Valve-Port B
Valve To Be Set
Pressure
Setting PSI
(MPa)
Tolerance
PSI (MPa)
Adjustment Location
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