TM 9-2320-279-34-1
Troubleshooting Malfunctions (Cont)
Table 2-3.
Troubleshooting (Cont)
Malfunction
Test or Inspection
Corrective Action
MATERIAL HANDLING CRANE (M977, M985, M984E1) (CONT)
Step 4.
Check main hydraulic pressure adjustment (para 17-31 for M977 and M985) (para 17-31.1
for M984E1).
If main hydraulic pressure cannot be adjusted, repair crane control valve
(para 17-28 for M977 and M985) (para 17-28.4 for M984E1).
Step 4.1
Check for contaminated or damaged boom relief valve.
Remove, clean, inspect, and install boom relief valve (para 17-32.1).
Change 3
2-102.1/(2-102.2 blank)
