Lull 6K Service Manual - Manual (Page 496)

Boom and Transfer
6-246 Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
4. Remove elbow (Item 9) from transfer cylinder. Cap cylinder orifice.
5. Loosen and remove hydraulic hose (Item 11) from connector on
transfer cylinder. Bleed any remaining oil into a suitable container. Cap
connector and hose end.
6. Loosen two (2) socket setscrews (Item 1) in rod nut (Item 2).
WARNING: To avoid personal and/or equipment damage, support the
hydraulic cylinder before removing any additional hardware
securing cylinder to transfer carriage or main frame. Use
suitable blocking and lifting devices when removing heavy
machine components.
7. Remove rod nut and washer (Item 3) securing transfer cylinder to the
transfer carriage (Item 4).
8. Remove two (2) each capscrews (Item 8) and lockwashers (Item 7)
securing transfer cylinder to main frame (Item 6).
9. Slowly remove the cylinder from the machine and take it to a location
suitable for inspection and disassembly.
10. Clean remaining parts with solvent and dry with compressed air.
Inspect for damage and replace as necessary.
Installation
Transfer Cylinder (Ref. Fig. 6-257) The following steps are required to install the transfer
cylinder.
1. Using sling(s), crane, or other suitable means, install cylinder (Item 5)
into openings in transfer carriage (Item 4) and main frame (Item 6).
WARNING: To avoid personal and/or equipment damage, make sure the
cylinder is properly supported until it is completely installed.
2. Secure cylinder to main frame with two (2) each lockwashers (Item 7)
and capscrews (Item 8). Torque capscrews to 200 ft-lbs.
3. Secure cylinder to transfer carriage with washer (Item 3) and rod nut
(Item 2). Torque rod nut to 1641 ft-lbs.
4. If socket setscrews (Item 1) were removed, apply thread locking
compound to the setscrews and install them in rod nut; tighten until
snug.
5. Install elbow (Item 9) on transfer cylinder and torque to 40–44 ft-lbs.
6. Install hydraulic tube (Item 10) on transfer cylinder elbow. Torque
swivel nut on tube to 44–48 in-lbs.
7. Install hydraulic hose (Item 11) on transfer cylinder connector. Torque
swivel nut on hose to 44–48 in-lbs.