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
Transmission
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K 8-15
Fig. 8-6: DW-3 Controller Signal Combinations Measured At Valve
Solenoids
6. If signal discrepancies are found, check the following:
a. Check DW-3 signals at controller (see page 8-10).
b. Check transmission wire harness (65011D) plug connectors and
wires for security and condition.
c. Check shunt diodes (see page 8-16).
7. If signal are correct, check the following:
a. Check solenoid resistance values: 24–40 W
b. Check transmission pressures. See “ZF Transmission Pressure
Checks” on page 8-23
3WG-100, 3-SPEED TRANSMISSION
DW-3 CONTROLLER SIGNALS MEASURED AT VALVE SOLENOIDS
Forward, Declutch OFF
1
st
Gear — M3 M2 M4 M5
2
nd
Gear — M3 M4 M5
3
rd
Gear — M3 M5
Reverse, Declutch OFF
1
st
Gear — M1 M2 M4
2
nd
Gear — M1 M4
3
rd
Gear — M1
Forward, Declutch ON
1
st
Gear — M2 M4
2
nd
Gear — M4
3
rd
Gear — —
Reverse, Declutch ON
1
st
Gear — M2 M4
2
nd
Gear — M4
3
rd
Gear — —
Neutral
1
st
Gear — M2 M4
2
nd
Gear — M4
3
rd
Gear — —
4WG-100, 4-SPEED TRANSMISSION
DW-3 CONTROLLER SIGNALS MEASURED AT VALVE SOLENOIDS
Forward, Declutch OFF
1
st
Gear — M3 M2 M4
2
nd
Gear — M3 M4
3
rd
Gear — M3
4
th
Gear — M5
Reverse, Declutch OFF
1
st
Gear — M1 M2 M4
2
nd
Gear — M1 M4
3
rd
Gear — M1
Forward, Declutch ON
1
st
Gear — M2 M4
2
nd
Gear — M4
3
rd
Gear — —
4
th
Gear — —
Reverse, Declutch ON
1
st
Gear — M2 M4
2
nd
Gear — M4
3
rd
Gear — —
Neutral
1
st
Gear — M2 M4
2
nd
Gear — M4
3
rd
Gear — —
4
th
Gear — —
E1010