9R8734 PIN Caterpillar parts
426B
Rating:
Alternative (cross code) number:
CA9R8734
9R-8734
9R8734
CA9R8734
9R-8734
9R8734
Weight: 7 pounds 3 kg.
BACKHOE LOADER,
Compatible equipment models: 9R8734:
Number on catalog scheme:
6
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Information:
Recommended Periodic Insulation Tests
The high voltage that is produced by an operating generator set can cause severe injury or death. Before performing any maintenance or repairs, ensure that the generator will not start.Place the engine control switch in the "OFF" position. Attach "DO NOT OPERATE" tags to all starting controls. Disconnect the batteries or disable the starting system. Lock out all switchgear and automatic transfer switches that are associated with the generator.
Periodically, use a megohmmeter to check the insulation resistance of the generator's main stator winding. The frequency of this test is determined by the generator's environment. Previous megohmmeter readings will also determine the frequency of this test.Test the main stator windings with a megohmmeter in the following situations:
The generator set is started for the first time.
The generator set is removed from storage.
The generator set is operating in a humid environment. Test every three months.
The generator set is not protected from the elements in an enclosed area. Test every three months.
The generator set is installed in an enclosed area. This area needs to be low in humidity and this area needs to have steady temperatures. Test every six months.
The generator set has not been run under load for three months. Test the generator set weekly. Use space heaters around the generator set if the generator is exposed to a sea water environment or if the humidity is above 75%. Also use space heaters if a test result was below 3 megohms.Space heaters must be used whenever the generator set is not under load. Space heaters must also be used whenever salt is present or whenever high humidity is present. Using a space heater in this fashion is the only way to maintain megohmmeter readings above one megohm. Use space heaters only when the generator is not running.Recommended Periodic Insulation Test Procedure
Personal injury or death can result from electrocution.The megohmmeter is applying a high voltage to the circuit.To avoid electrocution, do not touch the instrument leads without first discharging them. When finished testing also discharge the generator windings.
Take the generator out of service.
Visually inspect the generator for moisture. If moisture exists, do not megger. Dry the unit first. Refer to Special Instruction, SEHS9124, "Cleaning and Drying of Electric Set Generators".
Inspect the installation. Determine the equipment that will be tested by the 9U-6003 Megohmmeter.
Discharge the capacitance of the windings.
Disconnect "T0" from ground.
Disconnect the regulator sensing lead wires: "20", "22" and "24" .
Disconnect the voltage transformer leads of the control panel (T1, T2 and T3).
Disconnect any sensing leads from the switchgear. Disconnect any sensing leads from other devices.
Connect the megohmmeter's RED lead to ground.
Connect the megohmmeter's BLACK lead to "T0".
For units that are 600 volts or less, set the voltage to 500 Volts. For units that are more than 600 volts, set the voltage to 1000 Volts.
Use the 30/60 Time Resistance Method:
Apply voltage.
Observe the readings at 30 seconds. Observe the readings at 60 seconds.
Record the 60 second reading. This reading must be corrected for temperature.
Record temperature.
Record humidity.
Remove voltage.
Evaluate the readings.
The high voltage that is produced by an operating generator set can cause severe injury or death. Before performing any maintenance or repairs, ensure that the generator will not start.Place the engine control switch in the "OFF" position. Attach "DO NOT OPERATE" tags to all starting controls. Disconnect the batteries or disable the starting system. Lock out all switchgear and automatic transfer switches that are associated with the generator.
Periodically, use a megohmmeter to check the insulation resistance of the generator's main stator winding. The frequency of this test is determined by the generator's environment. Previous megohmmeter readings will also determine the frequency of this test.Test the main stator windings with a megohmmeter in the following situations:
The generator set is started for the first time.
The generator set is removed from storage.
The generator set is operating in a humid environment. Test every three months.
The generator set is not protected from the elements in an enclosed area. Test every three months.
The generator set is installed in an enclosed area. This area needs to be low in humidity and this area needs to have steady temperatures. Test every six months.
The generator set has not been run under load for three months. Test the generator set weekly. Use space heaters around the generator set if the generator is exposed to a sea water environment or if the humidity is above 75%. Also use space heaters if a test result was below 3 megohms.Space heaters must be used whenever the generator set is not under load. Space heaters must also be used whenever salt is present or whenever high humidity is present. Using a space heater in this fashion is the only way to maintain megohmmeter readings above one megohm. Use space heaters only when the generator is not running.Recommended Periodic Insulation Test Procedure
Personal injury or death can result from electrocution.The megohmmeter is applying a high voltage to the circuit.To avoid electrocution, do not touch the instrument leads without first discharging them. When finished testing also discharge the generator windings.
Take the generator out of service.
Visually inspect the generator for moisture. If moisture exists, do not megger. Dry the unit first. Refer to Special Instruction, SEHS9124, "Cleaning and Drying of Electric Set Generators".
Inspect the installation. Determine the equipment that will be tested by the 9U-6003 Megohmmeter.
Discharge the capacitance of the windings.
Disconnect "T0" from ground.
Disconnect the regulator sensing lead wires: "20", "22" and "24" .
Disconnect the voltage transformer leads of the control panel (T1, T2 and T3).
Disconnect any sensing leads from the switchgear. Disconnect any sensing leads from other devices.
Connect the megohmmeter's RED lead to ground.
Connect the megohmmeter's BLACK lead to "T0".
For units that are 600 volts or less, set the voltage to 500 Volts. For units that are more than 600 volts, set the voltage to 1000 Volts.
Use the 30/60 Time Resistance Method:
Apply voltage.
Observe the readings at 30 seconds. Observe the readings at 60 seconds.
Record the 60 second reading. This reading must be corrected for temperature.
Record temperature.
Record humidity.
Remove voltage.
Evaluate the readings.
Caterpillar parts catalog:
Parts pin Caterpillar catalog:
303, 311, 311B, 311C, 311D LRR, 312, 312B, 312C, 312C L, 312D, 312D L, 313D, 314C, 314D CR, 314D LCR, 315D L, 318C, 318D L, 319C, 319D, 319D L, 319D LN, 320, 320 L, 320B, 320B FM LL, 320C, 320C FM, 32...
416, 416B, 426, 426B, 428, 428B, 436B, 446, 446B, 446D, AP-600D, AP-655D, AP555E, AS4251C, M312, M313C, M315, M315C, M316C, M318, M318C, M318C MH, M320, M322C
416, 416B, 426, 426B, 428, 428B, 436, RT50, TH220B, TH330B, TH340B, TH350B, TH355B, TH460B, TH560B, TH580B
416B, 416C, 416D, 420D, 424D, 426B, 426C, 428B, 428C, 428D, 430D, 432D, 436C, 438B, 438C, 438D, 442D
120, 120B, 120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 12E, 12G, 12H, 12H ES, 12H NA, 12K, 130G, 135H, 135H NA, 140, 140B, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 143H, 14E, 14G, 14H, 14H NA, 153,...
416B, 416C, 416D, 420D, 424D, 426B, 426C, 428, 428B, 428C, 428D, 430D, 432D, 436, 436C, 438C, 438D, 442D, 446, 446B, 446D
416, 416B, 416C, 416D, 420D, 426, 426B, 426C, 430D, 436, 436B, 436C
416, 416B, 416C, 416D, 420D, 422E, 424D, 426, 426B, 426C, 428, 428B, 428C, 428D, 428E, 432D, 432E, 434E, 436C, 438, 438C, 442D, 442E, 444E
416, 416B, 416C, 416D, 420D, 422E, 424D, 426, 426B, 426C, 428, 428B, 428C, 428D, 428E, 432D, 432E, 434E, 436C, 438, 438C, 442D, 442E, 444E
416B, 416C, 416D, 420D, 424D, 426B, 426C, 428C, 430D, 436C
414E, 416B, 416C, 416D, 416E, 420D, 420E, 422E, 424B, 424B HD, 424D, 426B, 426C, 428B, 428C, 428D, 430D, 430E, 436C, 438C
426B, 426C, 436C
1A1345
PIN
3304, 3306, 3306B, 3406, 3406B, 3406E
3304, 3306, 3306B, 3406, 3406B, 3406E
436
436
4E3860
PIN AS
65C
65C
4E4053
PIN
65, 75
65, 75
65C, D9N, D9R
416
3176B, 3176C, 345B II, 345B L, 75C
438B
120M, 12M, 16M, 2290, 2390, 2391, 2470C, 2491, 24M, 2570C, 2590, 2670C, 306E, 308E2 CR, 345B L, 345C, 345C L, 345D, 345D L, 345D L VG, 349D, 349D L, 3508B, 3512, 3512B, 3516B, 365C, 365C L, 374D L, 37...
428B