General Rules For A Proper Overhauling - Marzocchi MAGNUM Handbuch

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US UK
Let's see what happens in a REBOUND leg (FIG. B) after a sharp compression;
– the pumping unit is returned by the spring power and the oil in the upper chamber can
flow into the lower chamber, thus wearing down the piston washers resistance;
– the oil also flows through the hole on the rod bottom. This oil flowing is adjusted by
means of the upper adjustment unit which, at this point, is all-important;
– the foot valve works under the above conditions and adds fluid taken from the
depressurized area to the chamber under the pumping element;
– besides the foot valve at the damper cartridge bottom there is a hole (7, FIG. B) which
allows a continuous communication between the two chambers.

GENERAL RULES FOR A PROPER OVERHAULING

1. After a total disassembly, always use new seals during the reassembly stage.
2. Always follow the sequence 1-2-1 when tightening two screws or nuts close one to each
other, i.e. always tighten the first screw (1) after tightening the second screw (2).
3. Use not inflammable and possibly biodegradable solvent when cleaning.
4. Always position the pumping element washers with the fin opposite to the bearing
surface on the piston.
5. Lubricate all parts in relative contact before reassembling.
6. Always grease the oil seal lips before reassembling.
7. Use only metric wrenches and not inch wrenches. Inch wrenches could have sizes
which are similar to millimeter wrenches but could damage the screws, thus being
impossible to loosen them.