MAHA MPJ Series, Original Operating Instructions

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15 To replace the seal kit, the hexagon nut A/F 46 must be removed (remove or
install using an impact wrench). The piston, the spacer bushing and the
guide bushing can then be removed. Make sure that the components are
dismantled downwards.
16 If components (piston, piston rod, ...) need to be replaced, these can now be
replaced. Before the new seals are fitted, all components must be cleaned
and checked for damage.
17 Only fit all seals using suitable tools (without sharp edges!).
18 Push all components (guide bushing, spacer bushing, piston) onto the
piston rod from below and secure with hexagon nut A/F 46.
19 Operate the drain spindle and allow the oil to run back into the pit jack.
20 Then check the hydraulic oil by opening the two screw plugs and collecting
the hydraulic oil in a white container. Check the hydraulic oil for
discoloration, dirt particles, foaming and water content.
21 Clean the pit jack in the cylinder barrel with clean cloths and then screw in
the screw plugs with new seals.