Lull 6K Service Manual - Manual (Page 194)

Supply, Pressure, and Return Hydraulics
5-50 Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
4. Stop engine and check for hydraulic leaks. Tighten connections as
necessary.
Overhaul
Multi-Spool Control Valve
Disassembly, Multi-Spool Control Valve
Fig. 5-33: Hydraulic Control Valve Sections
(Ref. Fig. 5-33) To separate the control valve sections,
1. Place valve on clean work surface.
2. Tag or mark valve sections for order of assembly.
3. Remove three (3) nuts and capscrews.
4. Separate valve sections, inlet cover, and outlet cover.
5. Clean nuts and capscrews with solvent and dry with compressed air.
K1
0
5
7
Nut
Main Relief
(See page 5-61)
O-Rings required for
outlet cover and each
valve section.
CRA Assembly
(See page 5-55)
Load Check Assembly
(See page 5-53)
Inlet Cover
(See page 5-58)
Capscrew
Out
let C
ove
r
(Se
e p
age
5-5
8)
Spool Assembly
(See page 5-51)
Pow
er-B
eyo
nd S
leev
e
(Se
e p
age
5-6
0)