Disassembly Procedure
| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | 237-9608 | Mounting Bar | 2 |
| B | 376-8697 | Guide Stud 5/8 - 11 by 36 inch (1) |
2 |
| 8T-4122 | Hard Washer | 4 | |
| 6V-4803 | Thrust Bearing | 4 | |
| 4K-0367 | Full Nut | 8 | |
| C | - | Loctite Graphite Anti-Seize | - |
| D | - | Scotch Brite | 1 |
| ( 1 ) | Cut 376-8697 guide studs to 18 inch lengths. Four 18 inch guide studs are required. |
Start By:
- Remove the heat exchanger. Refer to Disassembly and Assembly, "Heat Exchanger - Remove".
Note: The following story is for 373-2561373-2563 Sea Water Heat Exchanger Gp .
Note: The disassembly procedure can be performed while on the engine.
| 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, 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. |
| NOTICE |
|---|
Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
- Disconnect hose assembly (1) and hose assembly (3) from front frame (2) .
Note: Put identification marks on all hose assemblies and all plate assemblies for installation purposes. Plug all hose assemblies to prevent fluid loss, and to keep contaminants from entering the systems.
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| Illustration 1 | g02127189 |
- Use suitable cribbing to place the heat exchanger in a flat position on the frame assembly. This position can help ensure proper alignment during the procedure.
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| Illustration 2 | g02127190 |
- Remove bolts (4) from the corners and the spacers. Install Tooling (B) . Apply Tooling (C) to the threads of the nut and the threads of the guide stud prior to installation. Install the thrust bearing, the hard washer, and the nuts on the guide stud. Ensure that Tooling (B) is securely installed. Place two nuts together and tighten the outer nut in order to install Tooling (B) . Position the thrust bearing, the hard washer, and one nut against the front frame.
- Remove bolts (5) and the spacers. Install Tooling (A) .
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| Illustration 3 | g02718824 |
- Remove bolts (6) and bottom spacers (7) . Top spacers (7) will be removed after the front frame is loosened.
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| Illustration 4 | g02718823 |
- Loosen the nuts on Tooling (B) evenly. Ensure that Tooling (B) does not loosen from the frame assembly.
Note: Do not loosen the nuts more than one turn per nut until the heat exchanger plates are no longer compressed.
Note: As the front frame rises, the heat exchanger plates will slide along Tooling (A) .
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| Illustration 5 | g02128133 |
- Remove the top spacers from Step 5.
- Remove Tooling (B) and Tooling (A) .
- Remove front frame (2) , heat exchanger plates (8) , and the seals. Discard the seals
Note: A seal may stick to the front frame during removal.
Note: Check the O-ring seals for wear or for damage. Replace the components, if necessary.
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| Illustration 6 | g02128334 |
Note: Note the order and orientation of the heat exchanger plates and the seals during removal.
- Remove seals (9) from elbows (10) .
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| Illustration 7 | g02718840 |
- Remove zinc rods (11) and elbows (10) . Note the orientation of elbows (10) prior to removal.
- Remove inserts (12) .
- Remove lip seal (13) from the frame assembly.
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| Illustration 8 | g02718864 |
- Remove pressure cap (14) .
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| Illustration 9 | g02718886 |
- Remove bolts (15) .
- Remove filler neck (17) . Remove O-ring seal (18) .
- Remove hose connector (16) from the filler neck.
Instructions for Cleaning
- Clean the plates with a coarse nylon brush or new Tooling (D) .
- Do not use a dirty Tooling (D) , steel wool, or a wire brush, which may scratch the titanium plates. Any iron scratches in the titanium plates can lead to corrosion of the plates.
- The recommended cleaning solution for scale buildup (calcium carbonate) and sediment buildup (corrosion products) is 4 percent solution of nitric, citric, or sulfuric acid.
- The recommended cleaning solution for cleaning biological growth is a 4 percent solution of sodium hydroxide.
- Rinse plates thoroughly with water.