HYDRAULIC AR 3046744 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A FT-2674 Vacuum Cap 1 Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.Note: Put identification marks on all lines, on all hoses, on all harness assemblies, and on all tubes for installation purposes. Plug all lines, hoses, and tubes. This helps to prevent fluid loss and to keep contaminants from entering the system.
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, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® 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.
Illustration 1 g00690963
Install Tooling (A) onto the hydraulic tank. Attach an air supply hose onto Tooling (A). Apply 276 kPa to 414 kPa (40 psi to 60 psi) of air. This procedure will pull vacuum on the hydraulic system.
Illustration 2 g06032890
Open door (1).
Illustration 3 g06033194
Disconnect harness assemblies (2).
Disconnect hose assemblies (3) and (4).
Illustration 4 g06033212
Disconnect hose assembly (6).
Remove bolts (5) and solenoid valve (7).Installation Procedure
Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned with cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement.
Illustration 5 g06033212
Install solenoid valve (7) and bolts (5). Tighten bolts (5) to a torque of 7 1 N m (62 9 lb in).
Connect hose assembly (6).
Illustration 6 g06033194
Connect hose assemblies (3) and (4).
Connect harness assemblies (2).
Illustration 7 g06032890
Close door (1).
Illustration 8 g00690963
Remove Tooling (A) from the hydraulic tank.