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INSTALLATION AR-ENGINE 1246125 - Caterpillar



1246125 INSTALLATION AR-ENGINE Caterpillar parts 834B, 836 INSTALLATION
Rating:
17
Alternative (cross code) number:
CA1246125
124-6125
1246125
Caterpillar 1246125 INSTALLATION AR-ENGINE

Buy INSTALLATION AR-ENGINE 1246125 Caterpillar genuine, new aftermarket tractor parts with delivery
LANDFILL COMPACTOR, WHEEL DOZER,

Compatible equipment models: 1246125:

LANDFILL COMPACTOR  836  
WHEEL DOZER  834B   Caterpillar
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Information:

Testing A Brushless Exciter Rotating Rectifier With An Ohmmeter
Table 1
Tools Needed    
Part Number     Part Name     Quantity    
6V-7070     Digital Multimeter     1    
9U-7330     Multimeter     1    
146-4080     Digital Multimeter (RS-232)     1    
7X-1710     Multimeter Probe Group     1    
Illustration 1 g00555106
If the failure of a rectifier is suspected, use the following procedure.
Remove the cover from the exciter.
Remove the nut that secures the rectifier to the heat sink.
Remove the diode lead.
Lift the rectifier from the heat sink.
Refer to Illustration 1. Connect the ohmmeter's leads across the rectifier. Note the meter reading.
Reverse the ohmmeter leads. Note the meter reading.The ohmmeter should indicate a low resistance when the ohmmeter leads are across the rectifier in one direction. The ohmmeter should indicate a high resistance when the leads are reversed.If the ohmmeter indicates a low resistance in both directions, the rectifier is shorted. A high resistance in both directions indicates an open rectifier.Replace any faulty rectifiers with rectifiers that have comparable operating characteristics. Include the following information when a rectifier is being ordered for replacement:
Part Number of the rectifier
Model number of the exciter
Type of the exciter
Serial number of the generatorTesting a Brushless Exciter Rotating Rectifier With A Test Light
Illustration 2 g00555113
Test LightIf an ohmmeter is not available, a rectifier can be tested by using a test light. A test light consists of two standard flashlight batteries and a flashlight bulb. Refer to Illustration 2. If the failure of a rectifier is suspected, use the following procedure.
Remove the cover from the exciter.
Remove the nut that secures the rectifier to the heat sink.
Remove the diode lead.
Lift the rectifier from the heat sink.
Connect the leads of the test light across the rectifier. Notice if the bulb is illuminated.
Reverse the leads of the test light across the rectifier. Notice if the bulb is illuminated.The bulb should be illuminated when the leads of the test light are across the rectifier in one direction. The bulb should not be illuminated when the leads are reversed.If the bulb is illuminated in both directions, the rectifier is shorted. If the bulb is not illuminated in either direction, the rectifier is open.Replace any faulty rectifiers with rectifiers that have comparable operating characteristics. Include the following information when a rectifier is being ordered for replacement:
Part Number of the rectifier
Model number of the exciter
Type of the exciter
Serial number of the generator

Caterpillar SIS machinery equipment:

Caterpillar SIS

Caterpillar parts catalog:

Caterpillar parts catalog
836 LANDFILL COMPACTOR 7FR00001-00263 (MACHINE) POWERED BY 3408E HEUI ENGINE
834B Wheel Tractor 7BR00001-UP (MACHINE) POWERED BY 3408E Engine


Parts installation Caterpillar catalog:

2788409 INSTALLATION AR-ENGINE
793F, 793F CMD, 793F OEM, 793F-XQ
3358324 INSTALLATION GP-COMMUNICATION
621H, 621K, 623H, 623K, 623K LRC, 627H, 627K, 627K LRC
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