TUBE AS 2731198 - Caterpillar

Illustration 1 g00101435
Park the machine on level ground. Lower the bucket to the ground so that the stick is vertical.
Illustration 2 g00811329
Move the lever for 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 lever for the hydraulic lockout control to the LOCKED position.
Illustration 3 g00833952
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.
Illustration 4 g00101497
Open the access door on the right side of the machine.
Illustration 5 g00833954
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 6 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.
Illustration 7 g00101508
Return the machine to the position that is shown in Illustration 7. Check the machine for oil leaks.
Stop the engine.
Illustration 8 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 9 g00833952
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.