Manitowoc National Crane NBT40 Series Service Manual

4
10
National Crane Published 8-01-2017 Control # 287-11 4-43
NBT40 SERVICE MANUAL BOOM MAINTENANCE
EXAMPLE
MULTI-STAGE EXTEND CYLINDER
1. After cylinder has been disassembled from boom, place
on supports and place drain pan under holding valve.
2. Using hydraulic power (porta power or crane circuit)
extend cylinder sections approximately 24 in. If stages
H
i
-H
o
-twp
-twp
Clearance
Bottom shims
Final Clearance
=
=
=
=
=
=
=
19.38
-17.88
- 0.75
- 0.50
0.25
- 0.19
0.06
H
i
= 19.38 AT FRONT
19.38 AT BACK
NEAR CYLINDER
ANCHOR BARS
H
0
= 17.88
FIGURE 4-22
1ST STAGE
2ND STAGE
3RD STAGE
FIGURE 4-23
Reference Only

Manitowoc National Crane NBT40 Series Specifications

General

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