KIT- 4791622 - Caterpillar

Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Lower the scraper bowl to the ground. Retract the ejector cylinder and disengage the cushion-hitch.
Shut off the engine.
Turn the key to the ON position.
Move the control levers through the full range of travel. This will relieve any pressure that may be present in the hydraulic system.
Turn the key to the OFF position.
Illustration 1 g00810590
Slowly loosen hydraulic tank air breather cap (1) in order to release the pressure.
Tighten the hydraulic tank air breather cap.
Lines and components can now be removed.