Lull 6K Service Manual - Manual (Page 147)

Supply, Pressure, and Return Hydraulics
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K 5-3
Hydraulic Systems
Control Manifold Hydraulic System
6K-37 (S/N 101–317)
6K-42 (S/N 101–119)
8K-42 (S/N 101–220)
10K-42 (S/N 101–106)
10K-54 (S/N 101–103)
644B-37 (S/N 101–590, 592–666)
644B-42 (S/N 101–207)
844C-42 (S/N 101–621)
1044C-42 (S/N 101–116)
1044C-54 (S/N 101–154)
Fig. 5-2: Control Manifold Hydraulic Components
(Ref. Fig. 5-2) The term “control manifold hydraulic system” is used to
reference the hydraulic system initially used on models 644B, 6K, 844C,
8K, 1044C, and 10K. This system uses a control manifold along with two
other major control valve assemblies: one to control boom functions and
one to control all other hydraulic functions.
Mid-Inlet Hydraulic System
6K-37 (S/N 318–)
6K-42 (S/N 120–)
8K-42 (S/N 221–)
10K-42 (S/N 107–)
10K-54 (S/N 104–)
644B-37 (S/N 591, 667–)
644B-42 (S/N 208–)
844C-42 (S/N 622–)
1044C-42 (S/N 117–)
1044C-54 (S/N 155–)
Fig. 5-3: Mid-Inlet Hydraulic Components
K
1161
Multi-Spool
Control Valve
Assembly
Boom Function
Control Valve
Assembly
Control
Manifold
K
1162
Mid-Inlet Directional
Control Valve
Assembly
Rear Axle Stabilizer
Control Valve