TUBE 3156549 - Caterpillar

Removal Procedure
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
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.
Note: Put identification marks on all hoses, on all hose assemblies, on all wires, and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies.
Open the left side and right side access panel. Turn the battery disconnect switch to the OFF position.
Illustration 1 g02470517
Disconnect harness assemblies (4) from harness assemblies (3). Remove harness assemblies (3) from the clips.
Remove bolts (2) and remove solenoid valve (1).
Illustration 2 g02470556
Remove O-ring seals (7) from solenoid valve (1).
Remove nut (5) and remove coil (6) from both sides of solenoid valve (1).
Repeat Step 2 through Step 5 on the other side of the machine. Installation Procedure
Illustration 3 g02470556
Install coil (6) and nut (5) on both sides of solenoid valve (1).
Install O-ring seals (7) on solenoid valve (1).
Illustration 4 g02470517
Install solenoid valve (1) and bolts (2). Tighten bolts (2) to a torque of 5.5 0.5 N m (49 4 lb in).
Install harness assemblies (3) to the clips. Connect harness assemblies (4) to harness assemblies (3).
Repeat Step 1 through Step 4 on the other side of the machine.
Turn the battery disconnect switch to the ON position. Close the left side and right side access panel.