Alternator - Disassemble
Disassembly Procedure
Start By:
- Remove the alternator. Refer to Disassembly and Assembly, "Alternator - Remove" for the machine that is being serviced.
Note: The Disassembly and Assembly that follows is of a K1, 12V 7T-2876 Charging Alternator Gp. The other alternators are similar.
- Remove the two screws and regulator (1) .
Show/hide table
 | |
| Illustration 1 | g03228038 |
(1) Regulator (2) Capacitor lead (3) Capacitor | |
- Disconnect capacitor lead (2) from the back of the alternator. Remove the screw and capacitor (3) .
- Remove the pulley nut, washer, pulley (4), fan (5), and the key from the rotor shaft.
Show/hide table
 | |
| Illustration 2 | g03228056 |
(4) Pulley (5) Fan | |
- Mark the front and rear frame assemblies for proper assembly. Remove four screws (6) (one has a nut on it on the back of the alternator).
Show/hide table
 | |
| Illustration 3 | g03228057 |
(6) Screws | |
- Separate the front frame and rotor assembly from the rear frame and stator assembly. Watch for the wave washer, at the back of the rear frame assembly, to fall out.
- Remove four screws (7), and rotor (8) from the front frame.
Show/hide table
 | |
| Illustration 4 | g03228058 |
(7) Screws (8) Rotor | |
- Remove spacer (10), and front bearing (11), with a suitable puller. Remove bearing cover (9) from the rotor (8) .
Show/hide table
 | |
| Illustration 5 | g03228059 |
(9) Bearing cover (10) Spacer (11) Front bearing | |
- Remove the rear bearing (12) with a suitable puller. Unsolder both rotor winding leads from slip ring (13). Remove slip ring (13) with a suitable puller.
Show/hide table
 | |
| Illustration 6 | g03228076 |
(12) Rear bearing (13) Slip ring | |
- Remove terminal nuts (14), (15), and (16). Remove all of the washers and insulators.
Show/hide table
 | |
| Illustration 7 | g03228080 |
(14) terminal nuts (15) terminal nuts (16) terminal nuts | |
- Remove three screws (17). Remove the stator and rectifier assembly from the rear frame. Remove the remaining insulators from the terminal studs.
Show/hide table
 | |
| Illustration 8 | g03228097 |
(17) Screws | |
- Unsolder the three stator leads and separate rectifier (18) from stator (19) .
Show/hide table
 | |
| Illustration 9 | g03228116 |
(18) Rectifier (19) Stator | |
Show/hide table
 | |
| Illustration 10 | g03228119 |
K1 Alternator (1) Regulator (4) Pulley (5) Fan (6) Screws (8) Rotor (9) Bearing cover (11) Front bearing (12) Rear bearing (13) Slip ring (18) Rectifier (19) Stator | |
Caterpillar Information System:
2012/11/01 New Bellows Are Used for the Turbocharger Exhaust on C175-20 Off-Highway Truck Engines {1061}
Alternator - Bosch K1/N1 General Information
C1.5 and C2.2 Engines for Caterpillar Built Machines Glossary
424B and 424B HD Backhoe Loaders Power Train Transmission (Direct Drive) - Remove
3516B and 3516C Engines For MT4400D AC Off-Highway Trucks Engine Monitoring System
3516B and 3516C Engines For MT4400D AC Off-Highway Trucks Cat Data Link
128-4775 Lifting Bracket Assembly{0599, 0632, 0727, 1122, 4050} 128-4775 Lifting Bracket Assembly{0599, 0632, 0727, 1122, 4050}
2012/11/12 A New Belt Tensioner Is Used on Certain 785C Off-Highway Truck Engines {1357, 1358, 1397}
C175-16 and C175-20 Locomotive Engines Rocker Shaft and Push Rods - Install
2012/09/27 Improved Steering Rod for the Certain Asphalt Pavers Is Now Used {4303}
2013/08/06 New Injectors Are Used In Certain C7 and C9 Commercial Engines {1251, 1290}
2013/08/12 New Injectors Are Used In Certain C7 and C9 Machine Engines {1251, 1290}
C1.5 and C2.2 Engines for Caterpillar Built Machines Electronic Service Tools
Health Interface Module Setup and Configuration Guide User Interface
559C and 579C Knuckleboom Loaders Location of Components (HVAC System)
Health Interface Module Setup and Configuration Guide Device Menu
Health Interface Module Setup and Configuration Guide GPS Menu
Health Interface Module Setup and Configuration Guide Communicator Menu
Health Interface Module Setup and Configuration Guide Utilities Menu
C175-16 and C175-20 Locomotive Engines Electronic Unit Injector Sleeve - Remove
2012/09/19 Improved Mounting Updates the Hoist Lines Group on 795F AC Off-Highway Truck {5057, 5057}
PL83 Pipelayer TA2 Technical Inspection{7000, 753T} PL83 Pipelayer TA2 Technical Inspection{7000, 753T}
424B and 424B HD Backhoe Loaders Power Train Transmission (Direct Drive) - Install
2013/10/17 New Tube Assemblies are Available for the 797, and 797B Off-Highway Trucks {5056}