LINK & BEARING AS 2079900 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 311-1362 Vacuum Gauge Gp 1 Start By:
Release the hydraulic system pressure.
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.
Illustration 1 g02138430
Remove the cap from the hydraulic tank. Install Tooling (A) onto the hydraulic tank. Attach an air supply hose to Tooling (A). Apply 276 to 414 kPa (40 to 60 psi) of air. This procedure will pull vacuum on the hydraulic system.
Illustration 2 g02244257
Disconnect harness assemblies (4) and hose assemblies (3).
Remove bolts (1) and pressure reducing valve (medium pressure) (2).
Illustration 3 g02245893
Remove bolts (6) and solenoid valve (5). Repeat for the remaining solenoid valve. Installation Procedure
Install pressure reducing valve (medium pressure) (2) in the reverse order of removal.
Tighten bolts (6) to a torque of 7 1 N m (62 9 lb in).
Check the hydraulic oil level. Refer to , "Hydraulic System Oil Level - Check".