Hardi Mercury Covamax series Operator's Instruction Manual

6 - Maintenance1. 5O-Ring and Filter lubricationWhenever dismantling any filter or hose pipe take care not topinch the o-rings fitted to them. When replacing the pipe fitting,smear the o-ring with oil or grease so that it falls easily into placein its groove.Gearbox lubricationThe gearbox has a sight gauge that should be checked regularlyand the oil should be changed every 250 hours.The gearbox contains 1 litre of SAE-20/50 multigrade oil• Item 1 - Sight Gauge• Item 2 - Oil Fill• Item 3 - Oil Drain PlugTo allow for easy access when filling the gearbox with oil, a remotefilling tube is fitted fron the fill point on top of the gearbox andextends to the boom centre frame where it has a capped fitting inan easily accessible area.Pump MaintenanceOn HARDI 363 pumps, grease the pump, every 50 working hours oronce a month, through the grease nipple situated on the end ofthe input shaft. The grease goes along the grooves in the shaft toreach the crankcase where it is distributed around bearings,conrods, etc.AR high pressure series pumps use wet sump lubrication. It isrecommended to check oil level before starting and change oilafter the first 50 hours of operation then regularly at 500 hourintervals with SAE 30W oil. For servicing and troubleshootingplease refer to AR Pumps documentation or their website.D 50SIGHT GAUGEDRAIN PLUGFILL - 1 LITRE CAPACITY250SAE 20/50REMOTE FILLING TUBE