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Service and MaintenanceSimplified service and maintenance features save you time and money.Ground Level Service. The designand layout was made with the servicetechnician in mind. Many servicelocations are easily accessible at groundlevel allowing critical maintenance toget done quickly and efficiently.Air Filter Compartment. The air filterfeatures a double-element constructionfor superior cleaning efficiency.When the air cleaner plugs, a warningis displayed on the monitor screeninside the cab.Pump Compartment. A service dooron the right side of the upper structureallows ground-level access to the pumpand pilot filter.Radiator Compartment. The left rearservice door allows easy access to theengine radiator, oil cooler and air-to-airafter-cooler.A reserve tank and draincock are attached to the radiator forsimplified maintenance.Capsule Filter. The hydraulic returnfilter, a capsule filter, is situated outsidethe hydraulic tank. This filter preventscontaminants from entering the systemwhen hydraulic oil is changed andkeeps the operation clean.Greasing Points. A concentrated remotegreasing block on the boom deliversgrease to hard-to-reach locationson the front.Fan Guard. Engine radiator fan iscompletely enclosed by fine wire mesh,reducing the risk of an accident.Anti-Skid Plate. Anti-skid plate coverstop of storage box and upper structureto prevent slipping during maintenance.Diagnostics and Monitoring. The 329D Lis equipped with S•O•S SM sampling portsand hydraulic test ports for the hydraulicsystem, engine oil, and for coolant.A test connection for the Cat ElectronicTechnician (Cat ET) service tool islocated in the cab.Extended Service Interval.329D L service and maintenanceintervals have been extended to reducemachine service time and increasemachine availability.12