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

Reference Diagrams
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
4-4
Cartridge Identification
CS Compensator Valve
CV Check Valve
LC Logic Valve
PD Pilot Directional Valve
PF Priority Flow Control
PR Pressure Reducing Valve
PU Pilot Unloading Valve
C – Back View
D – Right Side View
F – Front View
E – Bottom View
A – Left Side View
B – Top View
F
E
B
C
D
A
Schematic, Model 644B w/Naturally Aspirated Engine, Control Manifold Hydraulic System-Diagram 1