COVER GP-VALVE MECHANISM 4N4953 - Caterpillar

Rework Procedure
DO NOT REMOVE SHRINK WRAP FROM THE 294-4710 SERVICE KIT UNTIL INSTRUCTED TO DO SO.
COST OF TOOLS IS NOT COVERED UNDER THE SERVICE LETTER
Note: For engines installed in vessels, a short version of the Mounting Bar Tool can be fabricated using a 267-1301 Spacer-Mount and a 134-5573 Stud.
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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.
1. After engine is completely cooled, drain the coolant from the cooling system into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change".
2. Disconnect hose assemblies (1) from the heat exchanger.
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3. Remove bolts (1) and the front spacers from the heat exchanger.
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4. Install Tooling (A) in the spacers.
5. Remove bolts (2) and bracket (3).
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6. Loosen bolts for the front frame in a reverse numerical sequence in at least three incremental steps. The plates for the heat exchanger will deflect approximately 30 percent when the bolts for the frame are loosened. Remove front frame.
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7. Remove the first five plates from the heat exchanger assembly.
Note: DO NOT REMOVE PLATE NO. 6.
8. Slide plate assembly for service kit (294-4710) onto heat exchanger until the kit is approximately 3-4 inches (75-100 mm) from plate no. 6. Plate assembly should be marked for proper orientation.
Note: The gasket on the plate assemblies should face the engine during assembly.
9. Using scissors or a knife, remove the wrap from the plates.
Use caution not to damage the seals or to move the seals out of place when removing the wrap.
10. Slide the service kit onto the heat exchanger until the kit contacts plate no. 6.
11. When plates (8) are installed correctly, the edges of the plates will form a honeycomb pattern.
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12. Position front frame (6) on Tooling (A). Install bolts (7) in front frame (6) and hand tighten the bolts. Tighten the bolts in the numerical sequence that is shown in at least three incremental steps until the front frame is tight against the spacers. Tighten the bolts in equal steps so plates will not bend. The plates for the heat exchanger will compress approximately 30 percent when the bolts for the frame are tightened. Torque bolts to 215 ? 40 N?m (160 ? 30 lb ft).
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13. Remove Tooling (A).
14. Install bracket (3) and bolts (2).
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15. Install remaining bolts (2) and the washers in the heat exchanger. Torque bolts to 215 ? 40 N?m (160 ? 30 lb ft).
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16. Tighten remaining bolts (2) in at least three incremental steps.
17. Connect hose assemblies (1) to the heat exchanger.
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18. Fill the cooling system. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change".