321C LCR Excavator Machine Systems Caterpillar


Drift Reduction Valve (Stick) - Remove

Usage:

321C DAX

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
5P-0306  Vacuum Transducer 
9S-8140  Pressurizing Pump 
ZZ  6V-9508  Face Seal Plug 
6V-9829 Cap As 
9U-7079 Tapered Cap/Plug 
5H-4019 Cover 

------ WARNING! ------

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.



NOTICE

Keep all parts clean from contaminants.

Contamination of the hydraulic system with foreign material will reduce the service life of the hydraulic system components.

To prevent contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected. Cover any disassembled components and clean them properly before assembly.

Clean the hydraulic system properly after any major component exchange or especially after a component failure, to remove any contamination.



NOTICE

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, PERJ1017, "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.


Note: SERVICE DATA: TOOLING (ZZ) WILL NOT BE IDENTIFIED IN PHOTOGRAPHS IN THE REMOVAL OR THE INSTALLATION. THIS TOOLING IS SHOWN IN ORDER TO ASSIST THE EXPERIENCED SERVICEMAN.

  1. Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release" .


    Illustration 1g01012505

  2. Remove the bolts and guard assembly (1).


    Illustration 2g01012508

  3. Remove cap (2) from the hydraulic tank.


    Illustration 3g01012510

  4. Attach Tooling (A) and Tooling (B) to the hydraulic tank.

    Note: Hook up the air to Tooling (A) in order to create a vacuum in the hydraulic system. This will minimize the leakage from the hose assemblies.



    Illustration 4g01014318

  5. Remove bolts (4) and guard assembly (3).


    Illustration 5g01014323

  6. Remove bolts (6) and guard assembly (5).


    Illustration 6g01014324

  7. Disconnect hose assemblies (7).


    Illustration 7g01014325

  8. Remove bolts (8). Remove stick drift reduction valve (9).

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