- Excavator:
- 311D RR L (S/N: PNJ1-UP)
- 312D L (S/N: XGK1-UP)
- 312E L (S/N: MJD1-UP)
- 314D LCR (S/N: SSZ1-UP)
- 314E LCR (S/N: ZJT1-UP)
- 315D L (S/N: JGS1-UP)
- 316E L (S/N: DZW1-UP)
- 312D L (S/N: XGK1-UP)
- Thumb:
- THUMB (S/N: THC1-UP; THD1-UP)
Introduction
This Special Instruction contains the procedure for installing 387-9690 387-9700 387-9680 Connecting Lines Gp . The machine must be equipped with auxiliary hydraulic lines on the stick. For additional information about the installation of the connecting lines, consult the local Cat dealer.
Safety
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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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Personal injury or death can result from improperly checking for a leak. Always use a board or cardboard when checking for a leak. Escaping air or fluid under pressure, even a pin-hole size leak, can penetrate body tissue causing serious injury, and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury. |
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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. |
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| NOTICE |
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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, "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. |
Required Tools
| Required Tools | |||
|---|---|---|---|
| Tool | Qty | Part Number |
Description |
| F | 1 | 311-1362 | Vacuum Cap |
Machine Preparation
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| Illustration 1 | g03160277 |
Service arrangement of an Excavator | |
- Clear all personnel from the machine and from the area around the machine.
- Start the engine.
- Set the engine speed dial at "10".
- Place the hydraulic activation control lever in the LOCKED arrangement.
- Arrange the machine on level ground. Check the visibility and adjust the mirrors for the best vision close to the machine.
- Arrange the machine into the servicing arrangement. Refer to Illustration 1.
- Stop the engine.
- Release the hydraulic system pressure. Refer to the Operation and Maintenance Manual, "System Pressure Release".
- Place the hydraulic activation control lever in the UNLOCKED arrangement.
- Turn the engine start switch to the OFF arrangement.
- Attach tooling (F) onto the hydraulic tank. Attach an air supply hose onto the assembly. Apply 276 to 414 kPa (40 to 60 psi). This procedure will pull a vacuum on the hydraulic system.
- Precede to the Connecting Lines Gp being installed on the machine.
Lines Group to Machine Guide
| Lines Group to Machine Guide | |||
|---|---|---|---|
| Lines Group | 387-9680 | 387-9690 | 387-9700 |
| Machine | 311D | 312D | 312D |
| 312E | 312E | ||
| 314D | 314D | ||
| 314E | 314E | ||
| 316E | 315D | ||
| 316E | |||
387-9690 Connecting Lines Gp
Required Parts
| 387-9690 Connecting Lines Gp | |||
|---|---|---|---|
| Item | Qty | Part Number |
Description |
| 1 | 1 | 394-1779 | Hose As |
| 2 | 1 | 394-1780 | Hose As |
| 3 | 1 | 1P-3703 | Rectangular Seal |
| 4 | 4 | 1P-4576 | Half Flange |
| 5 | 2 | 4J-5267 | O-Ring Seal |
| 6 | 1 | 5P-7466 | Clip |
| 7 | 1 | 5P-7467 | Clip |
| 8 | 1 | 5P-7468 | Clip |
| 9 | 1 | 5P-7469 | Clip |
| 10 | 1 | 5P-8112 | Grommet |
| 11 | 2 | 5P-8245 | Hard Washer |
| 12 | 1 | 5P-8444 | Grommet |
| 13 | 8 | 5S-7382 | Bolt |
| 14 | 2 | 6V-8675 | Bolt |
| 15 | 1 | 6V-9746 | O-Ring Seal |
| 16 | 8 | 8T-4896 | Hard Washer |
Procedure to Install the Connecting Lines Gp
 | |
| Illustration 2 | g03201939 |
Left side view of the stick (A) Existing boom lines (2) 394-1780 Hose As (4) 1P-4576 Half Flange (5) 4J-5267 O-Ring Seal (6) 5P-7466 Clip (7) 5P-7467 Clip (10) 5P-8112 Grommet (11) 5P-8245 Hard Washer (13) 5S-7382 Bolt (14) 6V-8675 Bolt (15) 6V-9746 O-Ring Seal (16) 8T-4896 Hard Washer | |
 | |
| Illustration 3 | g03202023 |
Left side close-up view of stick (4) 1P-4576 Half Flange (5) 4J-5267 O-Ring Seal (6) 5P-7466 Clip (7) 5P-7467 Clip (10) 5P-8112 Grommet (11) 5P-8245 Hard Washer (13) 5S-7382 Bolt (14) 6V-8675 Bolt (16) 8T-4896 Hard Washer | |
- Insert O-ring seal (15) into hose (2) and connect to the existing boom lines (A) as shown in Illustration 2.
- Arrange hose (2) as shown in Illustration 2. Connect to the thumb cylinder by using the following parts: O-ring seal (5), two half flanges (4), four bolts (13) and four washers (16). Refer to Illustration 3 for hardware installation.
- Push wire guard on hose (2) back towards the boom lines so the guarding is not between the clips and the hose.
- Secure hose (2) to the stick using the following parts: grommet (10), clips (6) and (7), bolt (14) and washer (11). Refer to Illustration 3 for hardware installation.
- Connect hose (1) to the existing boom lines (A) using rectangular seal (3) and the existing hardware as shown in Illustration 4.
 | |
| Illustration 4 | g03202074 |
Right side view of stick (A) Existing boom lines (1) 394-1779 Hose As (3) 1P-3703 Rectangular Seal (4) 1P-4576 Half Flange (5) 4J-5267 O-Ring Seal (8) 5P-7468 Clip (9) 5P-7469 Clip (11) 5P-8245 Hard Washer (12) 5P-8444 Grommet (13) 5S-7382 Bolt (14) 6V-8675 Bolt (16) 8T-4896 Hard Washer | |
 | |
| Illustration 5 | g03202089 |
Right side close-up view of stick (4) 1P-4576 Half Flange (5) 4J-5267 O-Ring Seal (8) 5P-7468 Clip (9) 5P-7469 Clip (11) 5P-8245 Hard Washer (12) 5P-8112 Grommet (13) 5S-7382 Bolt (14) 6V-8675 Bolt (16) 8T-4896 Hard Washer | |
- Arrange hose (1) as shown in Illustration 4. Connect to the thumb cylinder using the following parts: O-ring seal (5), two half flanges (4), four bolts (13) and four washers (16). Refer to Illustration 5 for hardware installation.
- Push wire guard on hose (1) back towards the boom lines so the guarding is not between the clips and the hose.
- Secure hose (1) to the stick using the following parts: grommet (12), clips (8) and (9), bolt (14) and washer (11). Refer to Illustration 5 for hardware installation.
- Remove tooling (F) from the hydraulic tank.
- Test the operation of the thumb cylinder.
- Inspect the fittings for hydraulic leaks.
387-9700 Connecting Lines Gp
Required Parts
| 387-9700 Thumb Cylinder Lines Gp | |||
|---|---|---|---|
| Item | Qty | Part Number | Description |
| (1) | 1 | 394-1777 | Hose As |
| (2) | 1 | 394-1778 | Hose As |
| (3) | 1 | 1P-3703 | Rectangular Seal |
| (4) | 4 | 1P-4576 | Half Flange |
| (5) | 2 | 4J-5267 | O-Ring Seal |
| (6) | 1 | 5P-7466 | Clip |
| (7) | 1 | 5P-7467 | Clip |
| (8) | 1 | 5P-7468 | Clip |
| (9) | 1 | 5P-7469 | Clip |
| (10) | 1 | 5P-8112 | Grommet |
| (11) | 2 | 5P-8245 | Hard Washer |
| (12) | 1 | 5P-8444 | Grommet |
| (13) | 8 | 5S-7382 | Bolt |
| (14) | 2 | 6V-8675 | Bolt |
| (15) | 1 | 6V-9746 | O-Ring Seal |
| (16) | 8 | 8T-4896 | Hard Washer |
Procedure to Install the Connecting Lines Gp
| | |
| Illustration 6 | g03201939 |
Left side view of the stick (A) Existing boom lines (2) 394-1778 Hose As (4) 1P-4576 Half Flange (5) 4J-5267 O-Ring Seal (6) 5P-7466 Clip (7) 5P-7467 Clip (10) 5P-8112 Grommet (11) 5P-8245 Hard Washer (13) 5S-7382 Bolt (14) 6V-8675 Bolt (15) 6V-9746 O-Ring Seal (16) 8T-4896 Hard Washer | |
| | |
| Illustration 7 | g03202023 |
Left side close-up view of stick (4) 1P-4576 Half Flange (5) 4J-5267 O-Ring Seal (6) 5P-7466 Clip (7) 5P-7467 Clip (10) 5P-8112 Grommet (11) 5P-8245 Hard Washer (13) 5S-7382 Bolt (14) 6V-8675 Bolt (16) 8T-4896 Hard Washer | |
- Insert O-ring seal (15) into hose (2) and connect to the existing boom lines (A) as shown in Illustration 2.
- Arrange hose (2) as shown in Illustration 2. Connect to the thumb cylinder by using the following parts: O-ring seal (5), two half flanges (4), four bolts (13) and four washers (16). Refer to Illustration 3 for hardware installation.
- Push wire guard on hose (2) back towards the boom lines so the guarding is not between the clips and the hose.
- Secure hose (2) to the stick using the following parts: grommet (10), clips (6) and (7), bolt (14) and washer (11). Refer to Illustration 3 for hardware installation.
- Connect hose (1) to the existing boom lines (A) using rectangular seal (3) and the existing hardware as shown in Illustration 4.
| | |
| Illustration 8 | g03202074 |
Right side view of stick (A) Existing boom lines (1) 394-1777 Hose As (3) 1P-3703 Rectangular Seal (4) 1P-4576 Half Flange (5) 4J-5267 O-Ring Seal (8) 5P-7468 Clip (9) 5P-7469 Clip (11) 5P-8245 Hard Washer (12) 5P-8444 Grommet (13) 5S-7382 Bolt (14) 6V-8675 Bolt (16) 8T-4896 Hard Washer | |
| | |
| Illustration 9 | g03202089 |
Right side close-up view of stick (4) 1P-4576 Half Flange (5) 4J-5267 O-Ring Seal (8) 5P-7468 Clip (9) 5P-7469 Clip (11) 5P-8245 Hard Washer (12) 5P-8444 Grommet (13) 5S-7382 Bolt (14) 6V-8675 Bolt (16) 8T-4896 Hard Washer | |
- Arrange hose (1) as shown in Illustration 4. Connect to the thumb cylinder using the following parts: O-ring seal (5), two half flanges (4), four bolts (13) and four washers (16). Refer to Illustration 5 for hardware installation.
- Push wire guard on hose (1) back towards the boom lines so the guarding is not between the clips and the hose.
- Secure hose (1) to the stick using the following parts: grommet (12), clips (8) and (9), bolt (14) and washer (11). Refer to Illustration 5 for hardware installation.
- Remove tooling (F) from the hydraulic tank.
- Test the operation of the thumb cylinder.
- Inspect the fittings for hydraulic leaks.
387-9680 Connecting Lines Gp
Required Parts
| 387-9680 Connecting Lines Gp | |||
|---|---|---|---|
| Item | Qty | Part Number | Description |
| (1) | 2 | 394-1780 | Hose As |
| (2) | 4 | 1P-4576 | Half Flange |
| (3) | 2 | 4J-5267 | O-Ring Seal |
| (4) | 2 | 5P-7466 | Clip |
| (5) | 2 | 5P-7467 | Clip |
| (6) | 2 | 5P-8112 | Grommet |
| (7) | 2 | 5P-8245 | Hard Washer |
| (8) | 8 | 5S-7382 | Bolt |
| (9) | 2 | 6V-8675 | Bolt |
| (10) | 2 | 6V-9746 | O-Ring Seal |
| (11) | 8 | 8T-4896 | Hard Washer |
Procedure to Install the Connecting Lines Gp
Note: Installation procedure and parts are the same on both sides.
 | |
| Illustration 10 | g03307976 |
Left side view of the stick (A) Existing boom lines (1) 394-1780 Hose As (2) 1P-4576 Half Flange (3) 4J-5267 O-Ring Seal (4) 5P-7466 Clip (5) 5P-7467 Clip (6) 5P-8112 Grommet (7) 5P-8245 Hard Washer (8) 5S-7382 Bolt (9) 6V-8675 Bolt (10) 6V-9746 O-Ring Seal (11) 8T-4896 Hard Washer | |
 | |
| Illustration 11 | g03307996 |
Left side close-up view of stick (2) 1P-4576 Half Flange (3) 4J-5267 O-Ring Seal (4) 5P-7466 Clip (5) 5P-7467 Clip (6) 5P-8112 Grommet (7) 5P-8245 Hard Washer (8) 5S-7382 Bolt (9) 6V-8675 Bolt (11) 8T-4896 Hard Washer | |
- Insert O-ring seal (10) into hose (1) and connect to the existing boom lines (A) as shown in Illustration 10.
- Arrange hose (1) as shown in Illustration 10. Connect to the thumb cylinder by using the following parts: O-ring seal (3), two half flanges (2), four bolts (8) and four washers (11). Refer to Illustration 11 for hardware installation.
- Push wire guard on hose (1) back towards the boom lines so the guarding is not between the clips and the hose.
- Secure hose (1) to the stick using the following parts: grommet (6), clips (4) and (5), bolt (9) and washer (7). Refer to Illustration 11 for hardware installation.