HARNESS AS 3178677 - Caterpillar

Illustration 1 g03346371
Features of hydraulic oil tank for the steering and brake systems.
(1) Access door
(2) Oil level sight gauge
Park the machine on level ground. Lower the implement so that the bucket is placed flat on the ground with a slight downward pressure. Engage the parking brake and stop the engine.
Examine oil level sight gauge (2) that is in the articulation joint on the left-hand side of the machine. Make sure that the oil level is visible in the middle portion of the sight gauge when the oil is cool.
Illustration 2 g03346384
(1) Access door
(3) Breaker relief valve
(4) Filler cap
If necessary, add oil to the hydraulic oil tank. Open access door (1) that is located in the platform on the left-hand side of the cab.
Push the button on the top of breaker relief valve (3) in order to relieve any tank pressure.
Remove filler cap (4) and add the oil.
Install the filler cap and close the access door.