Manitowoc 1400A - Single Front Outrigger (SFO); Adjust extend relief valve; Adjust retract relief valve

HYDRAULIC SYSTEM SERVICE MANUAL 1400A
2-12 1-21-2019 Control # 104-07
Single Front Outrigger (SFO)
1. Disconnect the SFO extend and retract lines
(Figure 2-7). Cap the retract line and install a gauge in
the extend line.
NOTE: Install a gauge in each line and set the extend and
retract pressures as described below with extend/
retract switch.
2. Start engine and set at governed rpm.
3. Depress the front outrigger extend/retract switch to
extend.
4. Adjust the extend relief valve on the front outrigger port
block to 3447+689/-0 kPa (500 psi +100/-0).
5. Shut down the engine.
6. Remove the gauge from the extend line and install in the
retract line. Cap the extend line.
7. Adjust the retract relief valve on the front outrigger port
block to 12065 +689/-0 kPa (1750 +100/-0 psi).
8. Shutdown the engine, remove the gauge and cap, and
reconnect the SFO hydraulic lines.
S
F
O
B
o
t
t
o
m
SF
O
T
o
p
Extend Line
Retract
Line
Retract
Relief
FIGURE 2-7
Front
Extend
Relief
Fo
r
Reference
Only