TM 9-2320-366-34-1
2-1080
l1. M1084/M1086 MATERIAL HANDLING CRANE (MHC) HYDRAULIC FUNCTIONS OPERATE SLOWLY
(CONT)
KNOWN INFO
POSSIBLE PROBLEMS
YES
NO
4.
TEST OPTIONS
REASON FOR QUESTION
Faulty two way solenoid
valve.
Is flow through four way
(upper control) valve
assembly OK, with
load applied?
Four Way Control Valve
Assembly Flow Test
Faulty two way solenoid
valve will cause crane
functions to not operate.
Replace two way solenoid valve (para 16-29).
Fault corrected.
Hydraulic oil level OK.
PTO OK.
Hydraulic hoses, tubes,
and fittings OK.
Hydraulic rotary pump OK.
Manual override valve
OK.
Input check valve OK.
Main relief valve OK.
