315B Excavator Excavator Systems Caterpillar

Installation Procedure

1. Apply Tooling (D) on the sleeve bearings in the pin bore at the foot of the boom.

2. Apply Tooling (D) on the lip seals in the pin bore at the foot of the boom.

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Illustration 1	g01017995
Typical example

Note: Be sure that the pin bores in the boom and the frame are clean and free of dirt prior to the installation of the boom.

3. Attach a suitable lifting device to boom (5). Put the boom in position in the frame. Be sure that the pin bores in the frame and the boom are aligned with each other. Be sure that the threaded puller hole in pin assembly (12) is clean. Install Tooling (C) in the end of the pin assembly. Apply Tooling (D) on pin assembly (12). Use two persons to temporarily install the pin assembly. Use a hammer to drive the pin assembly into position. Do not remove the hoist from the boom at this time.

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Illustration 2	g00363752
Top view of boom and frame

4. Slide the boom to one side until the boom makes contact with the frame. Measure the total clearance between the boom and the frame at the pin bore. The total clearance of measurement (a) plus measurement (b) must not be more than 1.0 mm (0.04 inch). If the total clearance is less than 1.0 mm (0.04 inch) the addition of shims will not be required. If the total clearance is more than 1.0 mm (0.04 inch) the addition of shims will be required.

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Illustration 3	g00363372
Typical example

5. If shims need to be installed between the boom and the frame, remove pin assembly (12). Refer to Disassembly and Assembly, "Boom - Remove". Install the shims between the boom and the frame on the side opposite the cab. Install pin assembly (12). Install retaining bolt (13) and washer (14). Tighten retaining bolt (13) to a torque of 325 ± 40 N·m (240 ± 30 lb ft). Remove the suitable lifting device from the boom.

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Illustration 4	g00363334

6. Install cover (11) and bolts (10) .

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Illustration 5	g00363756

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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, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates.

7. Check the condition of the O-ring seals that are used in the ends of hose assemblies (7) and (8). If the O-ring seals are damaged, use new parts for replacement. Install the O-ring seals in the ends of hose assemblies (7) and (8). Connect hose assemblies (7) and (8) .

8. Connect harness assembly (9) for the boom lights.

9. If the support pin for the boom cylinders was removed, reinstall the support pin in the boom by hand. Apply Tooling (D) on the pin prior to installation.

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Illustration 6	g01012766

10. Extend the boom cylinders. Fasten a suitable lifting device to right boom cylinder (4). Position right boom cylinder (4) next to the support pin. Extend or retract the rods of the boom cylinders until the pin bores in the rod are aligned with the support pin. Push the support pin into the cylinder rod. Install retainer plate (3) and bolts (2). Disconnect the suitable lifting device from the right boom cylinder.

11. Fasten a hoist to left boom cylinder (6). Position left boom cylinder (6) next to the support pin. Be sure that the bore in the cylinder rod is aligned with the support pin. Push the support pin into the cylinder rod.

12. Install the other retainer plate (3) and bolts (2) .

13. Lubricate the boom cylinder pins and the pin joint for the boom foot. Refer to Operation and Maintenance Manual for the correct procedure.

End By: Install the stick. Refer to Disassembly and Assembly, "Stick - Install".