CRANKSHAFT 0R6720 - Caterpillar

Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact skin.
Illustration 1 g01132442
Park the machine on level ground.
Illustration 2 g01077703
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 g01164362
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 g01357044
Open the access door on the right side of the machine.
Illustration 5 g00687480
Clean the area around the filter in order to keep dirt out of the filter base.
Remove the used pilot filter element from the filter mounting base. Note: This element is a cartridge type. The element cannot be reused.Note: Used filters should always be disposed of according to local regulations.
Clean the filter mounting base. Make sure that all of the old filter seal is removed.
Illustration 6 g00101502
Apply clean hydraulic oil to the seal of the new pilot filter.
Install the new oil filter by hand. Instructions for the installation of the filter are printed on the side of each Caterpillar spin-on filter. For non-Caterpillar filters, refer to the installation instructions that are provided by the supplier of the filter.Note: There are rotation index marks on the filter that are spaced 90 degrees or 1/4 of a turn away from each other. When you tighten the filter, use the rotation index marks as a guide.Note: You may need to use a Caterpillar strap wrench, or another suitable tool, in order to turn the filter to the amount that is required for final installation. Make sure that the installation tool does not damage the filter.
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 position that is shown in Illustration 1. Check the machine for oil leaks.
Stop the engine.
Illustration 7 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 8 g01164362
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.