TM 9-2320-392-10-1
M1083A1 SERIES THEORY OF OPERATION - Continued 0003 00
M1084A1/M1086A1 MATERIAL HANDLING CRANE (MHC) - Continued
Hydraulic System. The hydraulic reservoir contains the oil needed to operate the MHC.
The hydraulic reservoir holds 27-gal (102 L) of oil and is equipped with an hydraulic oil
level gage. A fluid filter is mounted on the reservoir to remove contaminants. Hydraulic
pressure is supplied by a single stage hydraulic pump mounted on the back of the PTO.
Placing the PTO switch in the on position causes the PTO drive gear to engage with the
transmission and drive the single stage hydraulic pump. A manually operated back-up
hydraulic pump allows you to lower any load to the ground and stow the MHC if the single
stage hydraulic pump fails.
0003 00-42
