Lull 6K Service Manual - Manual (Page 562)

Transmission
8-14 Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
ii. Check ground connection to pin 85 through the horn button
ground.
h. Ignition switch.
i. Circuit breaker.
j. Battery and cable connections.
DW-3 Signals at Transmission Test
Note:Signals from DW-3 Controller, when measured at the solenoids, are
dependent upon correct voltage “IN” and “OUT” signals from the
DW-3. It is necessary to confirm signal integrity from the DW-3
before proceeding with the following test. See “DW-3 Speed
Range/Direction Signal Test for a 3WG-100 Transmission” on
page 8-10 or “DW-3 Speed Range/Direction Signal Test for a 4WG-
100 Transmission” on page 8-12 for procedures.
1. Park the machine on level ground, lower the boom, and block the
wheels.
2. Make sure the parking brake is disengaged and the service brake is
not applied.
3. Remove the cover at transmission valve to gain access to solenoids.
4. With the engine off, turn ignition switch to the “ON” position. Do not
start the engine.
5. Test all direction and speed range signal combinations shown in
Fig. 8-6. If signal discrepancies are found, proceed to Step 6. If signals
are correct, proceed to Step 7.