- Excavator:
- 307D (S/N: DSG1-UP; XCH1-UP)
Introduction
The Special Instruction, REHS5616 is for the procedure to modify the insulation for the cooling arrangement. If you need more information about the modification on your machine, consult your Cat dealer.
Do not perform any procedure that is outlined in this publication without reading this article first. Do not order any parts until you understand the information that is contained in this document.
Safety Section
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Do not operate or work on this machine unless you have read and understand the instructions and warnings in the Operation and Maintenance Manuals. Failure to follow the instructions or heed the warnings could result in injury or death. Contact your Cat dealer for replacement manuals. Proper care is your responsibility. |
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Required Parts
| Parts List for Cooling Rework | |||
|---|---|---|---|
| Item | Qty | Pt. No. | Part Name |
| (1) | 1 | 337-8597 | Insulation (40mm x 100mm x 25mm) |
| (2) | 1 | 337-8595 | Insulation (25mm x 115mm x 25mm) |
| (3) | 1 | 337-8591 | Insulation (50mm x 140mm x 25mm) |
| (4) | 1 | 337-8592 | Insulation (40mm x 80mm x 25mm) |
| (5) | 1 | 337-8593 | Insulation (60mm x 90mm x 50mm) |
| (6) | 1 | 338-1170 | Liner (40mm x 50mm x 25mm) |
| (7) | 1 | 338-5445 | Liner (Triangle) (55mm x 55mm x 25mm ) |
| (8) | 1 | 338-5446 | Liner (30mm x 60mm x 25mm) |
| (9) | 1 | 338-6792 | Liner (60mm x 80mm x 25mm) |
| (10) | 1 | 331-9868 | Insulation (90mm x 140mm x 10mm) |
| (11) | 1 | 297-8604 | Access Cover Gp (1) |
| ( 1 ) | For high ambient configurations only |
Modification Procedure
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| Illustration 1 | g00104545 |
Attach a "Do Not Operate" warning tag or a similar warning tag to the start switch or to the controls before you service the equipment. These warning tags (Special Instruction, SEHS7332) are available from your Cat dealer.
Installation Procedure
Hood Preparation
- Cut off 550 mm (21.65 inch) of the left side of the weather strip seal. Refer to Illustration 2 for the approximate location.
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| Illustration 2 | g02172416 |
(A) Weather strip seal | |
Note: The area below the radiator should have more air intake.
- Remove existing insulation (BB) (left side of the firewall surface).
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| Illustration 3 | g02172473 |
Location of 337-8595 Insulation (25mm x 115mm x 25mm) (2) There currently may be a gap (B) on the left or right side of the insulation. | |
- Install insulation (2). Install the insulation so no gap is on either side.
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| Illustration 4 | g02172593 |
Firewall Preparation
- Fill the gap between the firewall and the governor motor bracket by sealing the bottom of the center firewall.
Adjust insulation (3) horizontally so the insulation is positioned as in Illustration 5 at (Z) .
Attach the insulation vertically to the bottom of the plate by overlapping by 35 mm (1.40 inch). The extra 15 mm (0.6 inch) will fill the gap toward the governor motor bracket.
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| Illustration 5 | g02172673 |
Location of 337-8591 Insulation (50mm x 140mm x 25 mm) (3) Location of 337-8592 Insulation (40mm x 80mm x 25 mm) (4) | |
Note: Access the area by removing the bottom cover and the governor motor bracket.
- Fill the gap between the firewall and the frame by sealing the bottom end of the firewall center.
Adjust insulation (4) on the left side horizontally so the insulation comes in contact with the side of the radiator. The extra insulation on the right side should be attached firmly when installing the governor motor bracket.
Attach the insulation vertically to the bottom of the plate by overlapping 20 mm (0.8 inch). The extra 20 mm (0.8 inch) will fill the gap toward the frame.
- Block the path between the cab and the firewall to block the heated air.
Adjust the insulation horizontally against insulation (4) .
Adjust the slit in the insulation to the bottom of the plate. The extra 20 mm (0.8 inch) will fill the gap toward the frame.
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| Illustration 6 | g02173018 |
Location of 337-8593 Insulation (60mm x 90mm x 50mm) (5) | |
Radiator Preparation
- Attach insulation (1) to the division plate to fill the gap.
Overlap the insulation 30 mm (1.2 inch). below the plate.
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| Illustration 7 | g02173176 |
Location of 337-8597 Insulation (40mm x 100mm x 25 mm) (1) | |
Note: Fill the gaps in the insulation.
- Attach liner (6) on the existing insulation. Fill the gap toward the back-end frame.
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| Illustration 8 | g02173220 |
Location of 338-1170 Liner (40mm x 50mm x 25mm) (6) . | |
Note: The counterweight has been removed in the Illustration above, removing the counterweight during the rework is not necessary. The work can be performed from the upper side, or from the bottom with the bottom cover removed.
- Install liner (7) to seal the gap toward the shroud.
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| Illustration 9 | g02173244 |
Location of 338-5445 Liner (55mm x 55mm x 25mm) (Triangle) (7) | |
- Install insulation (8) to seal the gap toward the shroud.
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| Illustration 10 | g02173255 |
Location of 338-5446 Insulation (30mm x 60mm x 25mm) (8) . | |
- Check if a gap (R) is present around the air hose. If a gap is present, loosen hose clamp (S) and adjust the hose. Confirm there is no deviation in the insulation.
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| Illustration 11 | g02173273 |
- Install insulation (9) on the existing liner on the radiator side. Adjust the insulation to the radiator support with no space on the down side.
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| Illustration 12 | g02173284 |
Inside left cover of the machine Location of 338-6792 Insulation (60mm x 80mm x 25mm) (9) | |
Note: The notched corner of the insulation goes around the radiator mounting bolt.
- Install insulation (10) around the harness.
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| Illustration 13 | g02173350 |
Location of 331-9868 Insulation (90mm x 140mm x 10mm) (10) | |
Note: Insulation (10) is included on high ambient configurations. To install on standard machines, access the area of the machine by removing the bottom cover.
High Ambient Configuration
- For high ambient configurations, replace the access doors with the 297-8604 Access Cover Gp (Perforated) .
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| Illustration 14 | g02173357 |
297-8604 Access Cover Gp (11) | |