Manitowoc National Crane NBT40 Series Service Manual

5
10
National Crane Published 8-01-2017 Control # 287-11 5-5
NBT40 SERVICE MANUAL HOIST
bulkhead using double-sided adhesive tape. To remove the
module, pry it off the bulkhead. Remove any residual tape
from the bulkhead. Secure the replacement module to the
bulkhead with the foam tape. Connect the wires as tagged
during removal.
DRUM ROTATION INDICATOR
The Drum Rotation Indicator (DRI) and Minimum Wrap
Indicator (MWI) are integrated into one monitoring system
located on the left side of the hoist and transmits a rotation
signal to a solenoid (thumb thumper) located in the hoist
control lever on the operator’s seat.
The DRI transducer and integral Minimum Wrap Indicator
(MWI) is programmed to notify the operator when there are
three wraps of wire rope or 8 wraps of synthetic hoist rope
left on the hoist drum.
Removal
1. Loosen the collar on the connector and unplug the DRI
cable (1, Figure 5-6).
2. Remove the two retaining screws (2).
3. Remove the DRI unit from the hoist.
FIGURE 5-5
8425-1b
Item Description
1 To LED Indicator
2 Power and Ground
3 Main Hoist Pressure Switches
4 Auxiliary Hoist Pressure Switches
1
2
4
3
FIGURE 5-6
1
3
2
8640-3
Reference Only

Manitowoc National Crane NBT40 Series Specifications

General

Brand	Manitowoc
Model	National Crane NBT40 Series
Category	Construction Equipment
Language	English