Manitowoc National Crane NBT30H-2 Service Manual

7
National Crane 03-20-2019 Control # 613-06 7-1
NBT30H-2 SERVICE MANUAL OUTRIGGERS
SECTION 7
OUTRIGGERS
SECTION CONTENTS
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Front Outrigger Assembly . . . . . . . . . . . . . . . . . . . 7-1
Outrigger Beam Removal . . . . . . . . . . . . . . . . . . . 7-2
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Outrigger Beam Installation . . . . . . . . . . . . . . . . . 7-3
Extension Cylinder . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Jack Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
Wear Pad Adjustment . . . . . . . . . . . . . . . . . . . . . . 7-5
Rear Outriggers (RSOD). . . . . . . . . . . . . . . . . . . . . 7-6
RSOD Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Extension Cylinder. . . . . . . . . . . . . . . . . . . . . . . . . 7-7
RSOD Stabilizers. . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
Outrigger Monitoring System (OMS) (Optional—
Standard in North America) . . . . . . . . . . . . . . . . . . 7-8
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
DESCRIPTION
There are two sets of outriggers on the crane. The front
outriggers are just behind the cab and the rear outriggers are
located behind the rear tandem wheels. The rear outriggers
(RSOD) are described on page 7-6.
Cranes equipped with Outrigger Monitoring System (OMS)
(Optional—Standard in North America) have a string
potentiometer mounted inside each outrigger box. The
potentiometer is connected to the outrigger beam to monitor
the extension of the beam—retracted, mid-extended and full
extended.
The front outriggers are the main support because they are
located under the frame. The front outriggers can be used in
the fully retracted, at the mid-extended position, or the fully
extended position.
The outriggers are controlled with the hand held outrigger
control box located in a compartment on the operator control
console. When the outrigger extension is activated, it
extends or retracts the selected outrigger beam or outrigger/
jack.
The outriggers can be extended to the mid-extend position
by allowing the lock pin to ride on the top of the beam while
it’s extending. The lock pin drops into the hole when the
beam reaches the mid-extend position.
FRONT OUTRIGGER ASSEMBLY
The front outrigger assembly (Figure 7-1) consists of the
following:
• outrigger beams
• outrigger, or jack, cylinders
• required hoses and mounting hardware
• OMS potentiometer and associated hardware (if
equipped)

Manitowoc National Crane NBT30H-2 Specifications

General

Brand	Manitowoc
Model	National Crane NBT30H-2
Category	Construction Equipment
Language	English