Manitowoc National Crane 1300A - Cable Tension Sequence; 4- Section Boom W; 2 Stage Cylinder Cable Positioning

BOOM MAINTENANCE 1300A
4-12 01-22-2019 Control # 051-08
Cable Tension Sequence
Four section boom with two stage cylinder.
Cable tensioning to be in the following order:
1. 321 retract cables
2. 123 extend (synchronizing) cables.
3. 234 extend cables
4. 432 retract cables.
Four section boom with one stage cylinder.
Cable tensioning to be in the following order:
1. 123 extend cables.
2. 321 retract cables.
3. 234 extend cables.
4. 432 retract cables.
Three section boom with one stage cylinder.
Cable tensioning to be in the following order:
1. 123 extend cables.
2. 321 retract cables.
4- Section Boom w/ 2 Stage Cylinder Cable Positioning
Cable Tightening Sequence 4 Section Boom with Two
Stage Extend Cylinder
Boom must be in horizontal position when adjusting cable
tension (See Figure 4-21.) Retract boom fully ensuring
sections are bottomed out on section stops. Ensure all
sections are fully bottomed out and do not spring
back.(Reference “Tensioning Setup Procedure” on page 4-
11)
8860-5
FIGURE 4- 20
8860-6
8860-2
FIGURE 4- 21
1/2/3 EXTEND
2/3/4 EXTEND
4th STAGE
4/3/2 RETRACT
3/2/1 RETRACT
3RD STAGE
2ND STAGE
1ST STAGE
BASE
TIP