TM
9-2320-279-10-2
Troubleshooting Malfunctions (Cont)
Table 3-4. Troubleshooting (Cont)
Malfunction
Test or Inspection
Corrective Action
MATERIAL HANDLING CRANE (M984E1) (CONT)
11. OUTRIGGER OPERATION SLOW OR ABNORMAL.
Step 1. Check outside temperature. If temperature is less than 0 0F
(-17 0C), hydraulic oil may not flow easily.
Operate engine for 20 minutes with PTO ENGAGE switch
set to ON to bring oil to operating temperature.
If oil is still not warmed, lower crane to stowed position.
Push MAST control lever down. Hold MAST control
down for approximately 30 seconds, then return control
to neutral position. Repeat procedure several times until
oil is warmed.
Step 2. If outrigger operation is still abnormal, there may be air in
cylinders.
Fully let out and draw back outriggers several times to
remove air from cylinders.
Step 3. If problem remains, notify organizational maintenance.