Manitowoc National Crane 1300A Service And Maintenance Manual

National Crane 01-22-2019 Control # 051-08 3-7
1300A ELECTRIC SYSTEM
3
Crane Manifold Solenoids
The solenoids in the manifold located in the enclosure on the
turret provide the following functions:
• RCL and anti-two-block lockout solenoids disable the
hoist up, boom down, and telescope out when an
overload or anti-two-block condition occurs.
• The burst of speed solenoid diverts addition flow to the
hoist hydraulic circuit when the burst of speed switch on
the hoist control lever is depressed.
• The crane function power solenoid enables the hoist,
boom, telescope, and swing function when the crane
function power switch is depressed. The outrigger circuit
is disabled when the crane power function solenoid is
energized.
• The swing brake release solenoid powers off the swing
gearbox brake.
Before replacing a solenoid, check the connector for
corrosion. Clean the connector with fine sand paper and
lubricate with electrolytic grease. Do not use a
non-electrolytic grease. This insulates the connection and
prevents solenoid operation.
Item Solenoid
1 RCL and Anti-two-block Solenoids
2 Burst of Speed Solenoid
3 Crane Function Power Solenoid
4 Swing Brake Release Solenoid
1
2
3
4
FIGURE 3-5
Fault Check
RCL/A2B
Solenoids fail to
energize
• RCL relay R3 in the mini fuse block
• Fuse F9 in the mini fuse block
• Faulty RCL override switches
• Fuse F6 in micro fuse block
• Faulty crane power switch
Burst of speed
solenoid fails to
energize
• Faulty BOS switch
• Fuse F2 on the mini fuse block.
• Faulty solenoid
Crane function
power solenoid
fails to energize
• Faulty crane power switch
• Faulty solenoid
• Fuse F4 in micro fuse block

Manitowoc National Crane 1300A Specifications

General

Brand	Manitowoc
Model	National Crane 1300A
Category	Construction Equipment
Language	English