2404325 ENGINE AR-COMPLETE Caterpillar parts
C7
Rating:
Alternative (cross code) number:
CA2404325
240-4325
2404325
CA2404325
240-4325
2404325
TRUCK ENGINE,
Compatible equipment models: 2404325:
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Information:
Introduction
This Special Instruction provides the parts and information needed to install a drift reduction valve to the stick cylinder circuit. This procedure is applicable to the E70B Excavator equipped with a parallel offset type boom. When used in combination with the boom drift reduction valve, the drift of the front implements resulting from natural leakage through the main control valve is minimized. It is effective in lifting and load holding applications if cylinder drift is a problem. For best results, install the stick cylinder drift reduction valve in combination with the boom drift reduction valve. The E70B Excavator can be equipped with identical cylinder drift reduction valves for three cylinder lines of offset boom, boom and stick.
Machines equipped with drift reduction valves can have high pressure oil remaining in hydraulic cylinder lines for long periods of time, even after all implements have been grounded.Sudden release of high pressure oil can cause injury.Follow established procedures to purge the pressure before attempting to remove or disconnect hydraulic lines.
Do not perform any procedure, outlined in this publication, or order any parts until you read and understand the information contained within.Reference: Service Manual, Parts Manual, Special Instruction, SEHS9526, Installation Of Drift Reduction Valve To Boom Cylinder Circuit and Special Instruction, SEHS9463, Installation Of Drift Reduction Valve To Offset Boom Circuit.E70B Parts Needed
Procedure
1. Park the machine on level ground. Release the pressure in the hydraulic lines.
Figure 1. Supply Pipe Removal
(29) Supply pipe.2. Remove supply pipe (29) leading to the stick cylinder rod end. Retain three mounting clamps and associated hardware for later use. Discard supply pipe (29). Steps 3 and 4 are not needed if 7I2418 Drift Reduction Valve (3) is already installed onto the offset cylinder circuit.
Figure 2. Installation Of Supports
(17) Support. (18) Support.3. Weld two 4I9904 Supports (17) and two 4I9905 Supports (18) to the lower boom.
Figure 3. Installation Of Supports
(1) Pipe. (2) Pipe. (3) Drift reduction valve. (4) Connector. (5) Connector. (6) Connector. (7) O-ring seal. (8) O-ring seal. (9) O-ring seal. (10) O-ring seal. (11) Bolt. (12) Bolt. (13) Plain washer. (14) Bolt. (15) Support. (16) Support.4. Install two 4I9903 Supports (15) to both sides of the upper boom with four 8T4192 Bolts (14). Tighten to a torque of 71 7 N m (52 5 lb ft). Refer to View A of Figure 3.5. Install two 4I9902 Supports (16) to supports (15) with four 8T4136 Bolts (11) and 8T4121 Plain Washers (13). Tighten to a torque of 40 4 N m (30 3 lb ft). Refer to View A of Figure 3.
Figure 4. Drift Reduction Valve
(DR) Port. (P1) Port. (P2) Port. (Pi) Port.6. Install 995904 Connector (5) and 964924 O-ring Seal (7) into port (DR) of 7I2418 Drift Reduction Valve (3). Tighten to a torque of 39 4 N m (29 3 lb ft).7. Install 995927 Connector (6) and O-ring seal (7) into port (Pi) of drift reduction valve (3). Tighten to a torque of 39 4 N m (29 3
This Special Instruction provides the parts and information needed to install a drift reduction valve to the stick cylinder circuit. This procedure is applicable to the E70B Excavator equipped with a parallel offset type boom. When used in combination with the boom drift reduction valve, the drift of the front implements resulting from natural leakage through the main control valve is minimized. It is effective in lifting and load holding applications if cylinder drift is a problem. For best results, install the stick cylinder drift reduction valve in combination with the boom drift reduction valve. The E70B Excavator can be equipped with identical cylinder drift reduction valves for three cylinder lines of offset boom, boom and stick.
Machines equipped with drift reduction valves can have high pressure oil remaining in hydraulic cylinder lines for long periods of time, even after all implements have been grounded.Sudden release of high pressure oil can cause injury.Follow established procedures to purge the pressure before attempting to remove or disconnect hydraulic lines.
Do not perform any procedure, outlined in this publication, or order any parts until you read and understand the information contained within.Reference: Service Manual, Parts Manual, Special Instruction, SEHS9526, Installation Of Drift Reduction Valve To Boom Cylinder Circuit and Special Instruction, SEHS9463, Installation Of Drift Reduction Valve To Offset Boom Circuit.E70B Parts Needed
Procedure
1. Park the machine on level ground. Release the pressure in the hydraulic lines.
Figure 1. Supply Pipe Removal
(29) Supply pipe.2. Remove supply pipe (29) leading to the stick cylinder rod end. Retain three mounting clamps and associated hardware for later use. Discard supply pipe (29). Steps 3 and 4 are not needed if 7I2418 Drift Reduction Valve (3) is already installed onto the offset cylinder circuit.
Figure 2. Installation Of Supports
(17) Support. (18) Support.3. Weld two 4I9904 Supports (17) and two 4I9905 Supports (18) to the lower boom.
Figure 3. Installation Of Supports
(1) Pipe. (2) Pipe. (3) Drift reduction valve. (4) Connector. (5) Connector. (6) Connector. (7) O-ring seal. (8) O-ring seal. (9) O-ring seal. (10) O-ring seal. (11) Bolt. (12) Bolt. (13) Plain washer. (14) Bolt. (15) Support. (16) Support.4. Install two 4I9903 Supports (15) to both sides of the upper boom with four 8T4192 Bolts (14). Tighten to a torque of 71 7 N m (52 5 lb ft). Refer to View A of Figure 3.5. Install two 4I9902 Supports (16) to supports (15) with four 8T4136 Bolts (11) and 8T4121 Plain Washers (13). Tighten to a torque of 40 4 N m (30 3 lb ft). Refer to View A of Figure 3.
Figure 4. Drift Reduction Valve
(DR) Port. (P1) Port. (P2) Port. (Pi) Port.6. Install 995904 Connector (5) and 964924 O-ring Seal (7) into port (DR) of 7I2418 Drift Reduction Valve (3). Tighten to a torque of 39 4 N m (29 3 lb ft).7. Install 995927 Connector (6) and O-ring seal (7) into port (Pi) of drift reduction valve (3). Tighten to a torque of 39 4 N m (29 3