4. MAINTENANCE 2. Adding Oi l To add oil, remove the oil filler cap located at the top of the oil reservoir (Fig. 4.7B). Check and ensure the filter screen in the filler neck is undamaged. Add 10W30 API Classification SJ oil until oil is visible in the oil level sight glass (Fig. 4.7A). 3. Hydraulic Filter Replacement The hydraulic oil filter (Fig. 4.7C) must be changed after the first 50 hours of operation and every 150 hours thereafter. To change the filter; shut off the engine, lower the lift arms, ground any attachment and set the parking brake. Open the rear door and using an oil filter wrench remove the filter element.
Lubricate the new filter seal with system fluid and reinstall hand tight. Note: The loader has one filter. 4. Draining System Fluid Change the hydraulic oil: 1. After 1000 operating hours. 2. If the oil has become contaminated. 3. After any major hydrostatic repair. To drain the oil: remove the drain plug located at the bottom of the reservoir (Fig. 4.7D). Have sufficient containers ready to hold the fluid. Remove any metal particles stuck to the magnet. Seal the plug with teflon tape when replacing. Hyundai recommends that you abide by all applicable environmental regulations when disposing of oil.
IMPORTANT To avoid personal injury, lower the lift arms, shut off the engine, raise the seat bar and cycle the lift arm and bucket controls to ensure they are locked. Then, unlatch the seat belt and exit the loader. Do not enter or exit with the engine running unless as specified in this manual or under specific service and backhoe operating procedures. WARNING Oil Reservoir Drain Fig. 4.7D C734 48 Oil Filler Cap C4241 Fig. 4.7B C4241 Fig. 4.7B Hydraulic Filter C3785 Fig. 4.7C C3785 Fig. 4.7C