- Excavator:
- 320C (S/N: AMC1-UP; BCN1-UP; BDC1-UP; BEF1-UP; BPR1-UP; CCD1-UP; GHA1-UP)
- 320C L (S/N: ANB1-UP; BDE1-UP; BER1-UP; BRX1-UP; HBC1-UP)
- 320C S (S/N: BBL1-UP)
- 320C LN (S/N: BEA1-UP)
- 325C (S/N: AMH1-UP; BKW1-UP)
- 325C L (S/N: BLX1-UP; BMM1-UP; BTD1-UP; CRB1-UP)
- 325C LN (S/N: CSJ1-UP)
- 320C L (S/N: ANB1-UP; BDE1-UP; BER1-UP; BRX1-UP; HBC1-UP)
Introduction
This Special Instruction describes the basic steps and components that are used in order to install a four-way directional valve. Installation of a four-way valve allows the operator to change the machine control pattern. The operator has a choice of these patterns: Caterpillar SAE, Mitsubishi Heavy Industries (MHI), Kobelco and the former SCM.
The installation and adaptability of the four-way valve will enable the operator to be more productive with the machines that are listed.
Do not perform any installation procedures until you have read the information in this publication.
Also refer to the appropriate Parts Manual, Operation and Maintenance Manual, and Service Manual for your machine.
Procedure For 320C Excavators
The procedure that follows is for 320C Excavators.
Required Parts
For parts identification and ordering parts, refer to Table 1.
| Required Parts | |||
|---|---|---|---|
| Item | Qty | Part Number | Description |
| 1 | 1 | 176-4367 | Support |
| 2 | 1 | 176-4684 | Support |
| 3 | 1 | 176-4366 | Support |
| 4 | 1 | 4I-0806 | Hose As |
| 5 | 1 | 4I-3994 | Hose As |
| 6 | 1 | 104-8774 | Hose As |
| 7 | 1 | 4I-0833 | Hose As |
| 8 | 1 | 103-1361 | Hose As |
| 9 | 1 | 108-7375 | Hose As |
| 10 | 1 | 111-0988 | Hose As |
| 11 | 1 | 165-9470 | Pilot Valve |
| 12 | 1 | 087-5780 | Hose As |
| 13 | 2 | 4I-3988 | Hose As |
| 14 | 2 | 104-8771 | Hose As |
| 15 | 1 | 102-1026 | Hose As |
| 16 | 1 | 134-6918 | Hose As |
| 17 | 8 | 8T-4121 | Hard Washer |
| 18 | 4 | 8T-4136 | Bolt |
| 19 | 4 | 8T-4191 | Bolt |
| 20 | 1 | 115-8647 | Guard |
| 21 | 4 | 8T-4224 | Hard Washer |
| 22 | 4 | 8T-4908 | Bolt |
| 23 | 2 | 7K-1181 | Cable Strap |
| 24 | 4 | 4I-9521 | Hose Band |
| 25 | 4 | 4I-9522 | Hose Band |
| 26 | 4 | 4I-9523 | Hose Band |
| 27 | 4 | 4I-9524 | Hose Band |
| 28 | 4 | 4I-9525 | Hose Band |
| 29 | 4 | 4I-9526 | Hose Band |
| 30 | 4 | 4I-9527 | Hose Band |
| 31 | 4 | 4I-9528 | Hose Band |
| 32 | 1 | 7I-8252 | Hose As |
| 33 | 5 | 6V-9001 | Elbow |
| 34 | 9 | 6V-8724 | Elbow |
| 35 | 2 | 6V-8636 | Connector |
| 36 | 1 | 7Y-4199 | Hose As |
| 37 | 16 | 3J-1907 | O-Ring Seal |
| 38 | 16 | 6V-8397 | O-Ring Seal |
| Instruction Plates And Films | |||
| 39 | 1 | 214-4531 | Instruction Plate |
| 40 | 1 | 214-4532 | Instruction Plate |
| 41 | 1 | 7I-0455 | Film |
| 42 | 1 | 7I-1549 | Film |
| 43 | 1 | 176-2688 | Film |
Release of Pressure in the Hydraulic System
The release of hydraulic pressure in a hydraulic circuit is required before service is performed to that hydraulic circuit. Release the pressure in the following hydraulic circuits before any hydraulic lines are disconnected or removed from that hydraulic circuit.
- Boom hydraulic circuit
- Stick hydraulic circuit
- Bucket hydraulic circuit
- Swing hydraulic circuit
- Travel hydraulic circuit
- Attachment hydraulic circuits (if equipped)
- Pilot hydraulic circuit
- Return hydraulic circuit
Note: Refer to the Disassembly and Assembly Manual for additional information concerning service of the components of specific hydraulic circuits.
Release Of Hydraulic Pressure From A Single Hydraulic Circuit
 |
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. |
 |
| 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. |
Perform the following Steps in order to release the hydraulic pressure from a single hydraulic circuit of the main hydraulic system.
- Position the machine on level ground.
- Fully retract the stick cylinder rod. Adjust the position of the bucket so that the bucket is parallel to the ground. Lower the boom until the bucket is flat on the ground. Refer to Illustration 12.
 | |
| Illustration 1 | g00666865 |
- Shut off the engine.
- Turn the engine start switch to the ON position without starting the engine.
- Place the hydraulic activation control lever in the UNLOCKED position.
- Move only the joysticks or the pedals of the hydraulic circuit that requires service to the FULL STROKE positions. This will release the high pressure only in that single hydraulic circuit. This will also release any pressure that might be present in the pilot hydraulic circuit.
Note: If the desired hydraulic circuit that requires service requires the activation of a switch for operation, activate the necessary switches for the operation of the hydraulic circuit.
- Place the hydraulic activation control lever in the LOCKED position.
- Turn the engine start switch to the OFF position.
- Slowly loosen the filler plug on the hydraulic tank and release the pressure from the hydraulic tank. Leave the filler plug loose for a minimum of 45 seconds. This will release the pressure that may be present in the return hydraulic circuit.
- Tighten the filler plug on the hydraulic tank to the specified torque.
- The pressure in the single hydraulic circuit that requires service is now released and lines and components can be disconnected or removed from that hydraulic circuit.
Installation of the Four-Way Valve
 | |
| Illustration 2 | g00864245 |
Hose Assemblies For Removal (44) 104-8768 Hose As (45) 5I-8853 Hose As (46) 4I-3988 Hose As (47) 4I-6054 Hose As (48) 087-5303 Hose As (49) 108-7387 Hose As (50) 087-5303 Hose As (51) 5I-8853 Hose As | |
 | |
| Illustration 3 | g00864247 |
Section A-A From Illustration 2 (45) 4I-3988 Hose As (46) 4I-6054 Hose As (48) 108-7387 Hose As (49) 087-5303 Hose As | |
- Remove the eight hose assemblies that are identified in Illustration 2 and Illustration 3.
- Assemble support (2) to the upper frame inside the radiator compartment. Use four bolts (18) and four washers (17). Refer to Illustration 6 and Illustration 7.
 | |
| Illustration 4 | g00866298 |
Location Of The 165-9470 Pilot Valve | |
- Assemble five elbows (33), nine elbows (34), and two connectors (35) to the pilot valve (11). Refer to Illustration 5, Table 2, and Table 3.
 | |
| Illustration 5 | g00864835 |
Detail Of The Pilot Valve (33) 6V-9001 Elbow (34) 6V-8724 Elbow (35) 6V-8636 Connector (C) Identification Plate | |
- Assemble pilot valve (11) to support (2). Use four bolts (19) and four washers (17) .
 | |
| Illustration 6 | g00864825 |
Location Of New Components (1) 176-4367 Support (2) 176-4684 Support (3) 176-4366 Support (11) 165-9470 Pilot Valve (17) 8T-4121 Hard Washer (18) 8T-4136 Bolt (20) 115-8647 Guard (21) 8T-4224 Hard Washer (22) 8T-4908 Bolt (23) 7K-1181 Cable Strap | |
 | |
| Illustration 7 | g00864828 |
Section B-B From Illustration 6 (2) 176-4684 Support (4) 4I-0806 Hose As (7) 4I-0833 Hose As (9) 108-7375 Hose As (10) 111-0988 Hose As (11) 165-9470 Pilot Valve (12) 087-5780 Hose As (13) 4I-3988 Hose As (16) 134-6918 Hose As (17) 8T-4121 Hard Washer (18) 8T-4136 Bolt (19) 8T-4191 Bolt (24) 4I-9521 Hose Band (25) 4I-9522 Hose Band (26) 4I-9523 Hose Band (27) 4I-9524 Hose Band (28) 4I-9525 Hose Band (29) 4I-9526 Hose Band (30) 4I-9527 Hose Band (31) 4I-9528 Hose Band (36) 7Y-4199 Hose As | |
- Assemble one hose band to each end of the eight hose assemblies. Assemble the hose assemblies and O-ring seals to the shuttle valve. Refer to Illustration 9.
 | |
| Illustration 8 | g00864829 |
Section A-A From Illustration 6 (4) 4I-0806 Hose As (7) 4I-0833 Hose As (9) 108-7375 Hose As (10) 111-0988 Hose As (12) 087-5780 Hose As (13) 4I-3988 Hose As (16) 134-6918 Hose As (36) 7Y-4199 Hose As | |
 | |
| Illustration 9 | g00864831 |
Section C-C From Illustration 6 (5) 4I-3994 Hose As (6) 104-8774 Hose As (8) 103-1361 Hose As (13) 4I-3988 Hose As (14) 104-8771 Hose As (15) 102-1026 Hose As (24) 4I-9521 Hose Band (25) 4I-9522 Hose Band (26) 4I-9523 Hose Band (27) 4I-9524 Hose Band (28) 4I-9525 Hose Band (29) 4I-9526 Hose Band (30) 4I-9527 Hose Band (31) 4I-9528 Hose Band (32) 7I-8252 Hose As | |
- Assemble the eight hose assemblies and O-ring seals to the pilot valve (11). Refer to Illustration 7 and Table 2.
Show/hide table
Table 2 Hose Connections For The Four-Way Valve To The Shuttle Valve Four-Way Valve Connector
Hose Hose Remote Control Valve Port Mark Port Mark Hose Band Color Hose Hose Band Color Hose Port Mark 1 A 45 degree elbow R1 Orange 9 R1 Orange 4 JR1 2 B 45 degree elbow R2 White 10 R2 White 1 JR2 3 C 90 degree elbow R3 Green 11 R3 Green 2 JR3 4 D 90 degree elbow R4 Violet 12 R4 Violet 3 JR4 5 E 90 degree elbow L1 Red 13 L1 Red 5 JL1 6 F Straight L2 Yellow 14 L2 Yellow 6 JL2 7 G Straight L3 Blue 15 L3 Blue 7 JL3 8 H 90 degree elbow L4 Brown 16 L4 Brown 8 JL4
- Assemble one hose band to each end of the eight hose assemblies. Assemble eight hose assemblies and O-rings to the pilot valve. Refer to Illustration 7 and Table 3.
- Assemble the eight hose assemblies and O-rings to the main control valve. Refer to Table 3 and Illustration 7.
Show/hide table
Table 3 Hose Connections For The Four-Way Valve To The Main Control Valve Control Valve Hose Connector Four-Way Valve Connector Port Mark Function Hose Band Color Hose Port Mark Port Mark bR4 Boom UP R1 Orange 17 45 degree elbow 1 A 45 degree elbow aR3 Bucket CLOSE R2 White 18 45 degree elbow 2 B 45 degree elbow aR4 Boom DOWN R3 Green 19 90 degree elbow 3 C 90 degree elbow bR3 Bucket OPEN R4 Violet 20 90 degree elbow 4 D 90 degree elbow bL2 Swing RIGHT L2 Yellow 21 90 degree elbow 5 E 90 degree elbow bL4 Stick IN L3 Blue 22 Straight 6 F Straight aL2 Swing LEFT L4 Brown 23 Straight 7 G Straight bL3 Stick OUT L1 Red 24 90 degree elbow 8 H 90 degree elbow
- Assemble support (1) and support (3). Refer to Illustration 6. Use bolts (21) and washers (22) .
- Assemble guard (20) to the frame. Refer to Illustration 6.
- Clamp the hose assemblies together with the straps (23). Avoid damage to the hoses by positioning the straps so that no sharp corners or no cutting edges come in contact with the hoses. Make sure that the hose assemblies are not strained or twisted.
- Remove the air from the hydraulic circuit. Refer to the manual that is appropriate for your machine for the procedure to remove air from the hydraulic system.
- Check the hydraulic lines and fittings for leaks and torque.
- Make sure that the machine movements duplicate the control pattern that has been selected.
- Attach the films and instruction plates to the locations that are shown in Illustration 10.
 | |
| Illustration 10 | g00863511 |
Location Of Films And Instruction Plates (39) 214-4531 Instruction Plate (40) 214-4532 Instruction Plate (41) 7I-0455 Film (42) 7I-1549 Film (43) 176-2688 Film | |
Machine Control Patterns
A machine control pattern is selected by repositioning the lever on top of the four-way valve. Refer to Illustration 19. After a selection has been made, use the following icons to learn the corresponding machine movements in Illustration 21. Each machine control pattern has specific movements.
| Stick Out (1) - To move the stick OUT, push the appropriate control lever to this position. |
| Swing Right (2) - To swing the upper structure to the right, push the appropriate control lever to this position. |
| Stick In (3) - Position the control lever to this direction in order to move the stick inward. |
| Swing Left (4) - To swing the upper structure to the left, push the appropriate control lever to this position. |
| Boom Lower (5) - To lower the boom, push the appropriate control lever to this position. |
| Bucket Dump (6) - To dump the bucket, push the appropriate control lever to this position. |
| Boom Raise (7) - To raise the boom, push the appropriate control lever to this position. |
| Bucket Close (8) - To close the bucket, push the appropriate control lever to this position. |
HOLD (9) stops the stick, the bucket, or the boom movements.
Two incorporated functions may be performed at the same time by moving the appropriate control lever diagonally between the two positions.
The four machine control patterns are shown in Illustration 21.
 | |
| Illustration 11 | g00317147 |
The machine control patterns in the left and right columns correspond to the left and right control levers: (1) MHI, (2) Kobelco, (3) SAE and (4) former SCM. | |
Procedure For 325C Excavators
The procedure that follows is for 325C Excavators.
Required Parts
For parts identification and ordering parts, refer to Table 4.
| Required Parts | |||
|---|---|---|---|
| Item | Qty | Part Number | Description |
| 1 | 1 | 176-4684 | Support |
| 2 | 4 | 8T-4136 | Bolt |
| 3 | 8 | 8T-4121 | Hard Washer |
| 4 | 1 | 165-9470 | Pilot Valve |
| 5 | 4 | 8T-4191 | Bolt |
| 6 | 1 | 199-1779 | Support |
| 7 | 2 | 8T-4189 | Bolt |
| 8 | 2 | 8T-4224 | Hard Washer |
| 9 | 9 | 7K-1181 | Cable Strap |
| 10 | 1 | 4I-0995 | Hose As |
| 11 | 1 | 4I-3994 | Hose As |
| 12 | 1 | 087-5780 | Hose As |
| 13 | 3 | 087-5778 | Hose As |
| 14 | 1 | 7Y-4199 | Hose As |
| 15 | 1 | 110-5482 | Hose As |
| 16 | 6 | 199-1684 | Hose As |
| 17 | 2 | 199-1683 | Hose As |
| 18 | 3 | 8T-1905 | Elbow |
| 19 | 6 | 6V-9001 | Elbow |
| 20 | 7 | 6V-8724 | Elbow |
| 21 | 4 | 4I-9521 | Hose Band |
| 22 | 4 | 4I-9522 | Hose Band |
| 23 | 2 | 4I-9523 | Hose Band |
| 24 | 4 | 4I-9524 | Hose Band |
| 25 | 4 | 4I-9525 | Hose Band |
| 26 | 4 | 4I-9526 | Hose Band |
| 27 | 4 | 4I-9527 | Hose Band |
| 28 | 4 | 4I-9528 | Hose Band |
| 29 | 1 | 199-0047 | Sheet |
| 30 | 16 | 3J-1907 | O-Ring Seal |
| 31 | 16 | 6V-8397 | O-Ring Seal |
| Instruction Plates And Films | |||
| 32 | 1 | 214-4531 | Instruction Plate |
| 33 | 1 | 214-4532 | Instruction Plate |
| 34 | 1 | 7I-0455 | Film |
| 35 | 1 | 7I-1549 | Film |
| 36 | 1 | 176-2688 | Film |
Release of Pressure in the Hydraulic System
The release of hydraulic pressure in a hydraulic circuit is required before service is performed to that hydraulic circuit. Release the pressure in the following hydraulic circuits before any hydraulic lines are disconnected or removed from that hydraulic circuit.
- Boom hydraulic circuit
- Stick hydraulic circuit
- Bucket hydraulic circuit
- Swing hydraulic circuit
- Travel hydraulic circuit
- Attachment hydraulic circuits (if equipped)
- Pilot hydraulic circuit
- Return hydraulic circuit
Note: Refer to the Disassembly and Assembly Manual for additional information concerning service of the components of specific hydraulic circuits.
Release Of Hydraulic Pressure From A Single Hydraulic Circuit
|
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. |
|
| 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. |
Perform the following Steps in order to release the hydraulic pressure from a single hydraulic circuit of the main hydraulic system.
- Position the machine on level ground.
- Fully retract the stick cylinder rod. Adjust the position of the bucket so that the bucket is parallel to the ground. Lower the boom until the bucket is flat on the ground. Refer to Illustration 12.
| | |
| Illustration 12 | g00666865 |
- Shut off the engine.
- Turn the engine start switch to the ON position without starting the engine.
- Place the hydraulic activation control lever in the UNLOCKED position.
- Move only the joysticks or the pedals of the hydraulic circuit that requires service to the FULL STROKE positions. This will release the high pressure only in that single hydraulic circuit. This will also release any pressure that might be present in the pilot hydraulic circuit.
Note: If the desired hydraulic circuit that requires service requires the activation of a switch for operation, activate the necessary switches for the operation of the hydraulic circuit.
- Place the hydraulic activation control lever in the LOCKED position.
- Turn the engine start switch to the OFF position.
- Slowly loosen the filler plug on the hydraulic tank and release the pressure from the hydraulic tank. Leave the filler plug loose for a minimum of 45 seconds. This will release the pressure that may be present in the return hydraulic circuit.
- Tighten the filler plug on the hydraulic tank to the specified torque.
- The pressure in the single hydraulic circuit that requires service is now released and lines and components can be disconnected or removed from that hydraulic circuit.
Installation of the Four-Way Valve
 | |
| Illustration 13 | g00880932 |
Hose Assemblies For Removal (37) 102-7685 Hose As (38) 7Y-4384 Hose As (39) 7Y-4390 Hose As (40) 104-8771 Hose As (41) 087-5780 Hose As | |
 | |
| Illustration 14 | g00880933 |
Section A-A From Illustration 13 (38) 7Y-4390 Hose As (39) 104-8771 Hose As (40) 087-5780 Hose As | |
- Remove the eight hose assemblies that are identified in Illustration 13 and Illustration 14.
- Assemble support (1) to the upper frame inside the radiator compartment. Use four bolts (2) and four washers (3). Refer to Illustration 17 and Illustration 18.
| | |
| Illustration 15 | g00866298 |
Location Of The 165-9470 Pilot Valve | |
- Assemble three elbows (18), six elbows (19), and seven elbows (20) to the pilot valve (4). Refer to Illustration 16, Table 5, and Table 6.
 | |
| Illustration 16 | g00881954 |
Detail Of The Pilot Valve (18) 8T-1905 Elbow (19) 6V-9001 Elbow (20) 6V-8724 Elbow (C) Identification Plate | |
- Assemble pilot valve (4) to support (1). Use four bolts (5) and four washers (3) .
 | |
| Illustration 17 | g00882041 |
Location Of New Components (6) 199-1779 Support (7) 8T-4189 Bolt (8) 8T-4224 Hard Washer (9) 7K-1181 Cable Strap (10) 4I-0995 Hose As (11) 4I-3994 Hose As (12) 087-5780 Hose As (13) 087-5778 Hose As (14) 7Y-4199 Hose As (15) 110-5482 Hose As (16) 199-1684 Hose As (17) 199-1683 Hose As (29) 199-0047 Sheet | |
 | |
| Illustration 18 | g00882125 |
View E-E From Illustration 17 (1) 176-4684 Support (2) 8T-4136 Bolt (3) 8T-4121 Hard Washer (4) 165-9470 Pilot Valve (5) 8T-4191 Bolt (10) 4I-0995 Hose As (11) 4I-3994 Hose As (12) 087-5780 Hose As (13) 087-5778 Hose As (14) 7Y-4199 Hose As (15) 110-5482 Hose As (21) 4I-9521 Hose Band (22) 4I-9522 Hose Band (23) 4I-9523 Hose Band (24) 4I-9524 Hose Band (25) 4I-9525 Hose Band (26) 4I-9526 Hose Band (27) 4I-9527 Hose Band (28) 4I-9528 Hose Band | |
- Assemble one hose band to each end of the eight hose assemblies. Assemble the hose assemblies and O-ring seals to the shuttle valve. Refer to Illustration 19.
 | |
| Illustration 19 | g00882190 |
Section D-D From Illustration 17 (16) 199-1684 Hose As (17) 199-1683 Hose As (21) 4I-9521 Hose Band (22) 4I-9522 Hose Band (23) 4I-9523 Hose Band (24) 4I-9524 Hose Band (25) 4I-9525 Hose Band (26) 4I-9526 Hose Band (27) 4I-9527 Hose Band (28) 4I-9528 Hose Band | |
- Assemble the eight hose assemblies and O-ring seals to the pilot valve (4). Refer to Illustration 16 and Table 5.
Show/hide table
Table 5 Hose Connections For The Four-Way Valve To The Shuttle Valve Hose Shuttle Valve Hose Remote Control Valve Hose Band Color Hose Port Mark Hose Band Color Hose Port Mark R1 Orange 12 B4 A4 R1 Orange 4 JR1 R2 White 9 B1 A1 R2 White 1 JR2 R3 Green 10 B2 A2 R3 Green 2 JR3 R4 Violet 11 B3 A3 R4 Violet 3 JR4 L1 Red 13 B5 A5 L1 Red 5 JL1 L2 Yellow 14 B6 A6 L2 Yellow 6 JL2 L3 Blue 15 B7 A7 L3 Blue 7 JL3 L4 Brown 16 B8 A8 L4 Brown 8 JL4
- Assemble one hose band to each end of the eight hose assemblies. Assemble eight hose assemblies and O-rings to the pilot valve. Refer to Illustration 16 and Table 6.
- Assemble the eight hose assemblies and O-rings to the main control valve. Refer to Table 6 and Illustration 18.
Show/hide table
Table 6 Hose Connections For The Four-Way Valve To The Main Control Valve Control Valve Hose Connector Four-Way Valve Connector Port Mark Function Hose Band Color Hose Port Mark Port Mark bR4 Boom UP R1 Orange 17 45 degree elbow 1 A 45 degree elbow aR3 Bucket CLOSE R2 White 18 90 degree elbow 2 B 45 degree elbow aR4 Boom DOWN R3 Green 19 90 degree elbow 3 C 90 degree elbow bR3 Bucket OPEN R4 Violet 20 90 degree elbow 4 D 90 degree elbow bL2 Swing RIGHT L2 Yellow 21 90 degree elbow 5 E 90 degree elbow bL4 Stick IN L3 Blue 22 90 degree elbow 6 F 45 degree elbow aL2 Swing LEFT L4 Brown 23 90 degree elbow 7 G 45 degree elbow bL3 Stick OUT L1 Red 24 45 degree elbow 8 H 90 degree elbow
- Assemble support (6) and sheet (29). Refer to Illustration 17. Use bolts (7) and washers (8) .
- Clamp the hose assemblies together with the straps (9). Avoid damage to the hoses by positioning the straps so that no sharp corners or no cutting edges come in contact with the hoses. Make sure that the hose assemblies are not strained or twisted.
- Remove the air from the hydraulic circuit. Refer to the manual that is appropriate for your machine for the procedure to remove air from the hydraulic system.
- Check the hydraulic lines and fittings for leaks and torque.
- Make sure that the machine movements duplicate the control pattern that has been selected.
- Attach the films and instruction plates to the locations that are shown in Illustration 20.
 | |
| Illustration 20 | g00882495 |
Location Of Films And Instruction Plates (32) 214-4531 Instruction Plate (33) 214-4532 Instruction Plate (34) 7I-0455 Film (35) 7I-1549 Film (36) 176-2688 Film | |
Machine Control Patterns
A machine control pattern is selected by repositioning the lever on top of the four-way valve. Refer to Illustration 18. After a selection has been made, use the following icons to learn the corresponding machine movements in Illustration 21. Each machine control pattern has specific movements.
|
| Stick Out (1) - To move the stick OUT, push the appropriate control lever to this position. |
|
| Swing Right (2) - To swing the upper structure to the right, push the appropriate control lever to this position. |
|
| Stick In (3) - Position the control lever to this direction in order to move the stick inward. |
|
| Swing Left (4) - To swing the upper structure to the left, push the appropriate control lever to this position. |
|
| Boom Lower (5) - To lower the boom, push the appropriate control lever to this position. |
|
| Bucket Dump (6) - To dump the bucket, push the appropriate control lever to this position. |
|
| Boom Raise (7) - To raise the boom, push the appropriate control lever to this position. |
|
| Bucket Close (8) - To close the bucket, push the appropriate control lever to this position. |
HOLD (9) stops the stick, the bucket, or the boom movements.
Two incorporated functions may be performed at the same time by moving the appropriate control lever diagonally between the two positions.
The four machine control patterns are shown in Illustration 21.
| | |
| Illustration 21 | g00317147 |
The machine control patterns in the left and right columns correspond to the left and right control levers: (1) MHI, (2) Kobelco, (3) SAE and (4) former SCM. | |