1
TM 9-4940-568-10
3-33
Table 3-1. Troubleshooting - CONT.
Malfunction
Test or Inspection
Corrective Action
CRANE (CONT)
5.
HOIST OPERATION JERKY, OR DOES NOT LIFT OR LOWER LOAD.
Step 1. Check outside temperature. If temperature is less than 0 F (-17 C), hydraulic oil may
be thick and not flow easily. When operating crane (1) in extremely cold weather, proper
warm-up procedures must be followed.
If operating crane in extremely cold weather, refer to Para 2-41 for specific
warm-up instructions.
If operating crane in other than extreme cold conditions, go to Step 2.
Step 2. Check that load is not over the load limit shown on the range diagram (Para 2-29).
If load is over maximum weight, lower load and reduce load to correct weight.
If load is OK, go to Step 3.
