Service Manual User guide
Table Of Contents
- 10709790_B_644B,6K,844C,8K,1044C,10K_Lull_Service_Mnl
- Quick Reference
- Revision Record
- Table Of Contents
- List Of Figures
- List Of Tables
- Section 1 Safety
- Section 2 Identification & Specifications
- Section 3 General Maintenance
- Section 4 Reference Diagrams
- Section 5 Supply, Pressure & Return Hydraulics
- Section 6 Boom & Transfer
- Section 7 Frame Tilt & Oscillation
- Section 8 Transmission
- Section 9 Brakes
- Section 10 Outriggers
Boom and Transfer
6-160
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
Fig. 6-175: 4-Section Boom Pivot Pins
19. (Ref. Fig. 6-175) Remove two (2) each nuts (Item 1), lockwashers
(Item 2), and capscrews (Item 4) from boom pivot pins (Item 3).
CAUTION: Make sure slings and chains are secure and crane is
supporting the weight of the boom.
20. (Ref. Fig. 6-175) Using the slide hammer puller, remove the two (2)
boom pivot pins and shims (Item 5).
21. (Ref. Fig. 6-175) Carefully lift the boom assembly (Item 7) clear of the
transfer carriage/boom cradle (Item 6).
22. Swing the boom away from the machine and position it above a firm,
level surface. Rotate the boom upside down and lower it onto support
blocks.
23. Remove the front carriage tilt cylinder. See page 6-18.
J1222
3
1
2
3
4
2
1
5
6
5
7
4
# Description
1Nut
2 Lockwasher
3Boom Pivot Pin
4Bolt
# Description
5Shims
6 Transfer Carriage/Boom Cradle
7 Boom Assembly
5