TUBE AS-RH 8U4873 - Caterpillar

Introduction
This Special Instruction provides the disassembly and assembly procedure for the 3N-8891 Sea Water Heat Exchanger Gp .Disassembly 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, "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 1 g03487819
Remove rod assembly (1) .
Remove bolts (2), the washers, bonnet (3), O-ring seal (4), and shims (5) from the shell assembly.
Illustration 2 g03487417
Remove bolts (6), the washers, flanges (7), and gaskets (8) from bonnet (9).
Illustration 3 g03487938
Remove rod assembly (10) .
Use a suitable lifting device to remove core assembly (13) from the shell assembly. The weight of core assembly (13) is approximately 46 kg (101 lb). The weight of the shell assembly is approximately 48 kg (106 lb). Remove bolts (11), the washers, bonnet (9), gasket (12), core assembly (13), and gasket (14) from the shell assembly.
Remove spring pin (15) .Assembly Procedure
Illustration 4 g03489617
Install spring pin (15).
Use a suitable lifting device to install core assembly (13) into the shell assembly. The weight of core assembly (13) is approximately 46 kg (101 lb). The weight of the shell assembly is approximately 48 kg (106 lb). Install gasket (14), core assembly (13), gasket (12), bonnet (9), the washers, and bolts (11). Tighten bolts (11) to a torque of 47 to 57 N m (35 to 42 lb ft).
Install plug assembly (10). Tighten plug assembly (10) to a torque of 67 to 77 N m (49 to 57 lb ft).
Illustration 5 g03489197
Install gaskets (8), flanges (7), the washers, and bolts (6) to bonnet (9). Tighten bolts (6) to a torque of 47 to 57 N m (35 to 42 lb ft).
Illustration 6 g03489199
Illustration 7 g03485436
Install shims (5), O-ring seal (4), bonnet (3), the washers, and bolts (2).
Use 3 to 4 shims (5) to attain Dimension (X). Dimension (X) is 1.52 + 0.10 -0.46 mm (0.060 +0.004 -.018 inch).
Tighten bolts (2) to a torque of 47 to 57 N m (35 to 42 lb ft).
Install rod assembly (1). Tighten rod assembly (1) to a torque of 67 to 77 N m (49 to 57 lb ft)