Hardi Mercury Covamax series Operator's Instruction Manual

6 - Maintenance1. 9250 Hour ServicingReadjustment of Boom- 250 hour intervalsThe boom should be checked and adjusted every 250 hours or as necessary, details of adjusting procedures arecovered in the occasional maintenance section.Hydraulic Circuit- 250 hour intervalsCheck the hydraulic circuit for leaks and repair if necessary.€ DANGER: Never use hands to check for hydraulic leaks, use a piece of cardboard or similar.± WARNING: Hoses for boom lift must be replaced every 5 years.Hoses and Tubes- 250 hour intervalsCheck all hoses and tubes for possible damage, pinching and proper attachment. Replace damaged hoses or tubes.Wheel Bearings - 250 hour intervals± WARNING: If you do not feel totally confident changing wheel bearings, contact your HARDI® dealer’sworkshop.Check for play in the wheel bearings:• Place stop wedges in front of and behind LH wheel and jackup RH wheel.• Rock the RH wheel to discover possible play in the bearings.• If any play is found, support the wheel axle to prevent thetrailer from moving.• Remove hub cap (1) and cotter pin (9). Turn the wheel andtighten the castle nut (2) until a slight resistance in the wheelrotation is felt.• Loosen the castle nut until the first notch - horizontal orvertical - is aligned with the cotter pin hole in the shaft.• Fit a new cotter pin (9) and bend it over the end of the axle.• Fill the hub cap with fresh grease and screw it on to the hubagain.Repeat the procedure on LH hub assembly.Refit wheels and torque wheel nuts to 330Nm (243 ft.lb)123456789