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
4-3
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
P1G
P1
STB
P2
ST LS
CF
PSG
LC
2200
CS
PF
1200/1600
PU
PLT
F
PR
PG
CV
PD
.040
OR1
STP ACG
EF
T
AC
SW
B
450
PSI
.040
OR2
PSI
PSI
A5
B5
HR
HL
OUT
2
3
T
RET
A2
1
IN
This diagram applies to the following Model(s) and serial numbers:
644B-37 ....... S/N: 428, 429, 485-590, 592-666
644B-42 ........ S/N: 137-207
Schematic, Model 644B w/Naturally Aspirated Engine, Control Manifold Hydraulic System-Diagram 1