Table 2-5. Preventive Maintenance Checks and Services (M1089)
Shutoff valve and return valve must be opened before Material
Handling Crane (MHC), underlift assembly, stifflegs, or 30K winches
are operated. Failure to comply may result in damage to equipment.
a. Check that shutoff and
return valves are open.
Open valves as
b. Check that hydraulic
hoses are not damaged
b. Class III leak