IMPELLER 8M6562 - Caterpillar

Illustration 1 g00784570
Park the machine on level ground. Place the machine in the servicing position.
Illustration 2 g00811329
Move the hydraulic lockout control to the UNLOCKED position.
Turn the engine start switch to the ON position.
Move the joysticks and the travel levers/pedals to the full stroke positions in order to relieve the pressure in the pilot lines.
Turn the engine start switch to the OFF position and return the hydraulic lockout control to the LOCKED position.
Illustration 3 g00687449
Slowly loosen the fill/vent plug on top of the hydraulic tank in order to relieve the internal pressure of the hydraulic tank.
After the pressure is relieved, tighten the fill/vent plug.
Open the access door on the right side of the machine.
Illustration 4 g00687481
The case drain filter is located near the pilot oil filter.
Clean the area in order to keep dirt out of the filter base.
Remove the used case drain filter from the filter base.Note: This element is a cartridge type filter. The element cannot be reused.Note: Used filters should always be disposed of according to local regulations.
Clean the filter base.
Illustration 5 g00101502
Coat the seal of a new case drain filter with clean hydraulic oil. Install the new case drain filter in the filter base. Tighten the case drain filter hand tight.
Start the engine and operate the machine slowly for 10 to 15 minutes. Move each cylinder evenly through several cycles.
Return the machine to the servicing position. Check the machine for oil leaks.
Stop the engine.
Illustration 6 g00687286
(A) High temperature range (B) Low temperature range
Maintain the oil level in the low temperature range for a cold machine. Maintain the oil level in the high temperature range for a machine that is at a normal operating temperature.
Illustration 7 g00687449
Slowly loosen the fill/vent plug in order to relieve any pressure. Remove the fill/vent plug in order to add oil, if necessary.
Clean the fill/vent plug. Install the fill/vent plug.
Close the access door.