SkyTrak 8042 Service Manual - Manual (Page 891)

Stabil-TRAK™ System and Boom Interlock System
10.50 Model 8042, 10042, 10054 Legacy Rev. 10/03
10.13 BOOM EXTEND SYSTEM
HYDRAULIC CIRCUIT OPERATION
AND TROUBLESHOOTING
The function of the boom extend interlock system varies
under different operating conditions. The basic modes
include the EXTEND INTERLOCK MODE and
OUTRIGGER INTERLOCK MODE.
The hydraulic operation and troubleshooting information for
each of these modes will be described on the following
pages.
10.13.1 Troubleshooting Symptom Chart
Symptom Conditions Reference
With both outriggers RAISED, the
boom will not extend. Ignition ON, engine running
Both outriggers RAISED
Refer to Section 10.13.2, “Hydraulic Circuit
Operation - Extend Interlock Mode.”
With both outriggers lowered onto
firm terrain, the boom will not extend
to its full limits. Ignition ON, engine running
Both outriggers lowered onto firm terrain
Refer to Section 10.13.4, “Hydraulic
Circuit Operation - Outrigger Interlock
Mode,” and Section 10.13.5, “Hydraulic
Troubleshooting - Outrigger Interlock
Mode.”