MAHA MPJ Series, Original Operating Instructions

Page: 55 / 114

BA550001-en
55
12.2 Weekly
12.2.1 Piston rod
The piston rod must be extended empty once a week (see also Maintenance) to
bleed the pit jack.
The piston rod must be checked for damage during this process.
Damaged piston rods lead to leaks in seals.
Damage to the piston rod allows cleaning agents and salt water to penetrate
unhindered. Contamination in the hydraulic system leads to undetected damage
inside the pit jack.
12.2.2 Pivot of the load suspension
When checking the piston rod, also check the load handling attachment mount.
The bore must be free of impurities and, like the pin on the load handling
attachment, must not show any wear or deformation.
Worn or deformed locating holes and pins prevent safe working with the load
handling attachment and must be reworked or repaired before the pit jack can
continue to be used.
12.3 Every 6 months
12.3.1 Oil level check
NOTICE
For measuring and refilling, the piston rod must be fully retracted and the pit
jack disconnected from the air or power supply.
•
MPJ 1S The oil level must be between the two notches when the dipstick is
screwed in. If there is only one notch on the dipstick, this marks the maxi-
mum oil level and the lower end of the dipstick marks the minimum oil level.
•
MPJ 2S|3S
The oil level must cover at least half of the oil sight glass. If no oil can be
seen in the sight glass, hydraulic oil must be topped up.
•
MPJ HAE
The oil filler cap or oil dipstick is located under the sheet metal cover in the
area of the controls. To check the oil level, it is necessary to remove the
sheet metal cover.
The oil level must be between the two notches when the dipstick is screwed
in. If there is only one notch on the dipstick, this marks the maximum oil
level and the lower end of the dipstick marks the minimum oil level.
12.3.2 Rollers