Lull 6K Service Manual - Manual (Page 254)

Boom and Transfer
6-4 Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
3. Tag, loosen, and remove two (2) swivel tees (Item 11) from connectors
(Item 9) on bottom of joystick.
Note: On models with two joysticks (644B, 844C, and 1044C), hydraulic hoses
attach directly to the connectors on the front joystick and the swivel tees
(Item 11) are not used. Swivel tees as shown in Fig. 6-3 are used with
models 6K, 8K, and 10K and are also used with the rear joystick of models
644B, 844C, and 1044C.
4. Tag, loosen, and remove remaining four (4) hydraulic hoses (Item 12)
from connectors (Item 10).
5. Tag and disconnect two (2) lead connectors (Item 6) from wiring
harness (Item 5).
6. Loosen and remove four (4) each capscrews (Item 1) and lockwashers
(Item 2) securing joystick (Item 7) to control panel.
7. Remove joystick and take it to a suitable area for further disassembly
and cleaning.
8. Remove six connectors (Items 9 and 10) from bottom of joystick and
manifold. Clean with solvent. Dry with compressed air and inspect for
damage. Replace if necessary.
Installation
Joystick (Ref. Fig. 6-3) The following steps are required to install the joystick.
1. Install two (2) connectors (Item 9): one in center port in bottom of
joystick (Item 7) and the other in the bottom of the manifold. Torque
connectors to 25–29 ft-lbs.
2. Install remaining four (4) connectors (Item 10) in ported guides in
bottom of joystick body. Torque connectors to 25–29 ft-lbs.
3. Install assembled joystick on control panel (Item 8) with four (4) each
capscrews (Item 1) and lockwashers (Item 2). Torque capscrews to
50 in-lbs.
4. Reconnect two (2) lead connectors (Item 6) to wiring harness (Item 5).
5. Clean swivel nuts on hoses and tees with solvent.
6. Reconnect swivel tees/hydraulic hoses (Item 11) to connectors
(Item 9). Torque swivel nuts to 130–150 in-lbs.
Note: Hydraulic hoses in Step 6 are used only with the front joystick of models
644B, 844C, and 1044C. Swivel tees are used in all other instances.
7. Reconnect remaining four (4) hydraulic hoses (Item 12) to connectors
(Item 10). Torque swivel nuts on hoses to 235–265 in-lbs.
8. Reconnect two (2) lead connectors (Item 6) to wiring harness (Item 5).
9. Install side panel (Item 13) on control panel with two (2) lockwashers
(Item 15) and capscrews (Item 14). Torque capscrews to 96 in-lbs.