C3.3B Tier 4 Interim and EU Stage 3A Engines for Caterpillar Built Machines – Exhaust Gas Recirculation Valve – Remove and Install – C3.3B Tier 4 Interim/Stage 3A

Removal Procedure

Note: Refer to Specification UENR0995 "Engine Design" for non-specified engine Torque Values.

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

Personal injury can result from hot coolant, steam and alkali.

At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.

Remove cooling system pressure cap slowly to relieve pressure only when engine is stopped and cooling system pressure cap is cool enough to touch with your bare hand.

Do not attempt to tighten hose connections when the coolant is hot, the hose can come off causing burns.

Cooling System Coolant Additive contains alkali. Avoid contact with skin and eyes.



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.

    Illustration 1g02824663

  1. Drain coolant below exhaust gas recirculation valve level. Remove heat shield (1) .

    Illustration 2g02824816

  1. Disconnect hoses (2) and (3) . Remove bolts (4) .

    Illustration 3g02824896

  1. Disconnect hoses (6) and (7) . Remove bolts (5) and remove exhaust gas recirculation valve (8) and cooler assembly (9) .

Installation Procedure

  1. Install exhaust gas recirculation valve (8) in the reverse order of removal.

    1. Tighten the valve for hose (7) to a torque of 30.0 to 39.0 N·m (22.13 to 28.76 lb ft).

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