SWDM40 OPERATION & MAINTENANCE MANUAL
FIG. 8-6-8 FIG. 8-6-9
Note
■ Exhaust the inner pressure air from the oil tank through air filter top rod before
maintaining filter element.
■ Pay attention to tighten fixed bolts with proper strength to avoid over torque causing thread
damage when dismantling or mounting return filter cover plate.
■ The filter cartridge should be taken out from the oil tank when maintaining the return filter
element, so as to avoid impurity mixing into the hydraulic tank.
■ Check seal rings for damage, replace immediately if found.
■ When installing filter elements, seal rings should be check to avoid dropping or loss.
■ Return filter element and filter cartridge should be checked at the same time. If much
visible scrap iron and copper, please check hydraulic oil pump, hydraulic motor and other
hydraulic components for damage or abrasion at once.
Clean oil tank air filter, according to FIG. 8-6-5 , dismantle filter element, blow it from inner to
outer to clean dust and impurity.
Return filter element clean, according to FIG. 8-6-7, dismantle filter cartridge, take out the filter
element, blow it from inner to outer to clean impurity.
Pilot filter element, according to FIG. 8-6-9, take out pilot filter element, blow it from inner to
outer to clean impurity.
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