PUMP GP- HYD 10R6278 - Caterpillar

You must read and understand the warnings and instructions contained in the Safety section of this manual before performing any operation or maintenance procedures.Final Drives
Change Oil
1. Position one final drive with the oil drain plug at the bottom.2. Remove drain plug (1). Allow the oil to drain into a suitable container.3. Inspect the drain plug seal and replace if necessary.4. Clean and install the drain plug.5. Remove oil fill plug (2).6. Fill the final drive to bottom of fill plug opening. See the Refill Capacities chart in the Maintenance Section of this manual.7. Inspect the oil fill plug seal and replace if necessary.8. Repeat Steps 1 through 7 for the other side of machine.Hydraulic Tank Oil
Change Oil
Operate the machine long enough to warm the oil. 1. The machine must be level. Lower all attachments to the ground. Apply slight down pressure. Engage the parking brake. Stop the engine. 2. Remove the hydraulic system oil tank filler cap and strainer.3. Wash the filler strainer and filler cap in clean, nonflammable solvent. 4. Remove the oil drain plug, located under the right rear of machine.5. Attach a 10 cm (4 in) long hose to a 1 inch NPT pipe nipple. Install the pipe nipple and hose into the drain plug opening.6. Turn the pipe nipple clockwise to open the internal drain valve. Allow the oil to drain into a suitable container.7. Remove the pipe nipple. This closes the hydraulic oil tank drain valve.8. Clean and install the drain plug. Tighten the plug to a torque of 68 7 N m (50 5 lb ft).9. Change the hydraulic system filter. See the topic Hydraulic System under Every 500 Service Hours or 3 Months in the Maintenance Section of this manual.10. Install the filler strainer. 11. Fill the hydraulic system oil tank. See the Refill Capacities chart in the Maintenance Section of this manual.12. Inspect the filler cap gasket and replace if necessary.13. Install the oil filler cap.14. Start and run the engine for a few minutes. 15. Maintain the oil level to the FULL mark in the sight gauge.16. Stop the engine.Track Roller Frame Guides
Measure Wear
Measure the rotational movement of the front roller frame relative to the rear roller frame. 1. Raise the front of the machine with the dozer hydraulics. Place a 100 mm (4 inch) block under the outside end of a track grouser near the idler. Lower the machine onto the block. 2. Use a grease pencil to make a mark on the tubular section of the front roller frame and a corresponding mark on the rear roller frame. 3. Raise the front of the machine with the dozer hydraulics. Move the block under the inside edge of the same track grouser. Lower the machine onto the block. 4. Put a mark on the tubular section of the front roller frame corresponding with the mark on the rear roller frame. Measure distance (1) between