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Product: WHEEL LOADER
Model: 972G WHEEL LOADER 9GW
Configuration: 972G WHEEL LOADER 9GW00293-UP (MACHINE) POWERED BY 3306 ENGINE
Disassembly and Assembly
26SI Series Alternator
Media Number -RENR1252-01 Publication Date -01/10/1999
Alternator - Assemble
SMCS - 1405-016
Assembly Procedure
Date Updated -09/10/2001
i01167078
Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement.
Note: Do not strike the diodes. The shock of such an impact can damage the diodes. Use proper tools in order to press the diodes in the mountings.
Illustration 1
1. Install 3 diodes (11) in heat sink (12) .
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Illustration 2
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Note: Do not strike the bushing. Shocks from striking the housing can cause damage.
2. Press bushing (43) in housing (14) .
3. Install 3 diodes (13) in housing (14) .
Illustration 3
Illustration 4
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7. Press housing (31) on rotor (39) and bearing (40) .
8. Install 4 screws (38) in housing (31) .
Illustration 5
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Note: Do not strike the bearing. Shocks from striking the housing can cause damage.
9. Install the inner race. Press bearing (37) into the housing.
Illustration 6
10. Press cap (36) in housing (14) .
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Illustration 7
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11. Install the coil and support (34) in housing (14). Guide the field leads and the grommet through the hole as the coil is installed in housing (14). Install 3 screws (33) .
Illustration 8
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12. Press the stator (32) and housing (14) together. Guide the stator leads and the grommet through the hole as the stator is installed in housing (14) .
Illustration 9
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Note: Do not damage exposed stator windings or field windings. Bumping the windings or scraping the windings may break the insulation. Broken insulation may create a short circuit or a ground.
13. Join housing (31) and housing (14). Install 4 bolts (30) .
Illustration 10
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Note: Many of the alternator's internal components are covered with dielectric grease. If the grease is removed, reapply the grease.
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11
14. Install Insulator (29). Install the heat sink and diode assembly (12) in housing (14) .
12
15. Install separator (28) .
16. Install alternator output terminal (27). Install insulator (26). Install the nut and washer (25) .
17. Install diode trio (24) and install screw (23) .
Illustration 13
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18. Install the 3 screws and insulators (18). Connect wire (19) .
19. If the "R" terminal is used, install the following components: nut (20), lead (21), the washer and terminal (21) .
Illustration 14
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20. Install the screw and insulator (16). Connect capacitor lead (17) .
Illustration 15
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Note: The 3 output diodes (11) are located in heat sink (12). These diodes are identical in polarity. Diode (11) has red insulation on the wire. The 3 ground diodes (13) are located in housing (14). These diodes are identical in polarity. Diode (13) has black insulation on the wire.
21. Connect 6 diode leads. Connect 3 phase leads. Connect 3 stator phase leads. Install 3 nuts (15).
Table 1
Alternator Ground
Negative
Current Flow of the Output Diodes
Lead to the Heat Sink
Current Flow of the Ground Diodes
Housing to the Lead Red Wire Black Wire
Illustration 16
22. Install mounting plate (10).
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Illustration 17
23. Install regulator (9) .
24. Install grounded mounting screw (8) .
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18
25. Install 2 insulated screws (6). Connect the 3 leads.
Note: The regulator and the mounting plate are coated with dielectric grease. If the grease is removed, reapply the grease.
26. Install nut (7) and connect the wire.
19
27. Install gasket (5) .
20
28. Position cover (4). Install 7 screws (3) .
21
29. Position plate (2). Install 4 screws (1) .
30. Install the fan, the pulley, the washer, and the pulley nut. Copyright 1993 - 2023 Caterpillar Inc. All Rights Reserved.
Network For SIS Licensees. Sat Oct 21 12:40:37 UTC+0530 2023
Product: WHEEL LOADER
Model: 972G WHEEL LOADER 9GW
Configuration: 972G WHEEL LOADER 9GW00293-UP (MACHINE) POWERED BY 3306 ENGINE
Disassembly and Assembly
26SI Series Alternator
Media Number -RENR1252-01 Publication Date -01/10/1999 Date Updated -09/10/2001
Alternator - Disassemble
SMCS - 1405-015
Disassembly Procedure Table 1 Required Tools
Start By:
A. Remove the alternator. Refer to Disassembly and Assembly, "Alternator - Remove" for the machine that is being serviced.
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
1. Remove the pulley nut, the washer, the pulley, and the fan.
Illustration 1
2. Remove 4 screws (1). Remove plate (2) .
Illustration 2
3. Remove 7 screws (3). Remove cover (4) .
Illustration 3
4. Remove gasket (5) .
Illustration 4
5. Remove 2 insulated screws (6). Remove the 3 leads.
Note: The regulator and the mounting plate are coated with dielectric grease. If the grease is removed, reapply the grease.
6. Remove nut (7) .
Illustration 5
7. Remove grounded mounting screw (8) .
8. Remove regulator (9) .
Illustration 6
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9. Remove mounting plate (10). The mounting plate may be stuck to the regulator.
Illustration 7
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Note: The 3 output diodes (11) are located in heat sink (12). These diodes are identical in polarity. Diode (11) has red insulation on the wire. The 3 ground diodes (13) are located in housing (14). These diodes are identical in polarity. Diode (13) has black insulation on the wire.
10. Remove 3 nuts (15). Disconnect 3 stator phase leads. Disconnect 3 phase leads. Disconnect 6 diode leads.
Table 2
Alternator Ground Current Flow of the Output Diodes Current Flow of the Ground Diodes
Negative
Lead to the Heat Sink Housing to the Lead Red Wire Black Wire
Illustration 8
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11. Remove the screw and insulator (16). Disconnect capacitor lead (17) .
Illustration 9
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12. Remove the 3 screws and insulators (18). Disconnect wire (19) .
13. If the "R" terminal is used, remove the following components: nut (20), lead (21), the washer and terminal (21) .
Illustration 10
14. Remove screw (23) and remove diode trio (24) .
15. Remove the nut and washer (25). Remove insulator (26). Remove alternator output terminal (27) .
16. Remove separator (28) .
Illustration 11
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Note: Many of the alternator's internal components are covered with dielectric grease. If the grease is removed, reapply the grease.
Illustration 12
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17. Remove the heat sink and diode assembly (12) from housing (14). Insulator (29) may be stuck to heat sink (12) .
Illustration 13
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Note: Do not damage exposed stator windings or field windings. Bumping the windings or scraping the windings may break the insulation. Broken insulation may create a short circuit or a ground.
18. Remove 4 bolts (30). Carefully separate housing (31) from housing (14) .
Illustration 14
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19. Pull apart stator (32) and housing (14). Guide the stator leads and the grommet through the hole as the stator is removed from housing (14) .
Illustration 15
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20. Remove 3 screws (33). Remove the coil and support (34) from housing (14). Guide the field leads and the grommet through the hole as the coil is removed from housing (14) .
Illustration 16
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21. Position a small screwdriver in slot (35). Pry cap (36) from housing (14) .
Illustration 17
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Note: Do not strike the bearing. Shocks from striking the housing can cause damage.
22. Wipe the excess grease from the bearing well. Press bearing (37) into the housing. Remove the inner race.
Illustration 18
23. Remove 4 screws (38) from housing (31) .
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24. Lift rotor (39) and bearing (40) from housing (31) .
Illustration 19
25. Pull bearing (40) from rotor (39) .
26. Pull retainer (41) from rotor (39) .
27. Pull collar (42) from rotor (39) .
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Illustration 20
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Note: Do not strike the bushing. Shocks from striking the housing can cause damage.
28. Press bushing (43) from housing (14) .
Note: Do not strike the diodes. The shock of such an impact can damage the diodes. Use proper tools in order to press or pull the diodes from the mountings. As much as 890 N (200 lb) of force may be needed to remove a diode.
29. Remove 3 diodes (13) from housing (14) .
Illustration 21
30. Remove diode (11) from heat sink (12) .
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Copyright 1993 - 2023 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees.
Sat Oct 21 12:38:39 UTC+0530 2023
Product: WHEEL LOADER
Model: 972G WHEEL LOADER 9GW
Configuration: 972G WHEEL LOADER 9GW00293-UP (MACHINE) POWERED BY 3306 ENGINE
Disassembly and Assembly
966G and 972G Wheel Loaders Power Train
Axle Housing - Assemble
SMCS - 3260-016
Assembly Procedure Table 1
Spanner Wrench As
1U-6436 Duo-Cone Seal Installer
FT-2619 Rolling Torque Bar
Note: The axle housing assemblies that are used in the fixed axle and in the oscillating axle are similar. Therefore, both axle assemblies can be assembled in the same manner.
Illustration 1 g00450765
1. Fasten the axle shaft in Tooling (B) .
2. Heat bearing cone (18) to a maximum temperature of 135°C (275°F).
3. Install bearing cone (18) on the axle shaft, as shown. The bearing cone must be seated against the shoulder on the axle shaft.
Note: Allow the bearing cone and the axle to reach a uniform temperature.
4. Use a suitable driver or a press in order to reset the bearing cone. This will ensure that the bearing cone is seated properly.
5. Apply clean SAE 30 oil on bearing cone (18) in order to prevent rust.
Note: Make sure that the rubber seals and all surfaces that contact the seals are clean and dry. After installation of the seals, apply clean SAE 30 oil on the contact surfaces of the metal seals.
6. Use Tooling (F) in order to install the Duo-Cone seal (19) on the axle assembly. Refer to Disassembly and Assembly, "Duo-Cone Conventional Seals - Install".
Note: The following steps are for the installation of the ring gear.
Illustration 2 g00451054
Note: Dowels (15) are used to locate ring gear (14) in position.
7. Locate the position of ring gear (14) in relation to the axle housing. Align the holes in order to install dowels (15) . Place alignment marks on ring gear (14) and the axle housing in order to ensure correct installation.
8. Lower the temperature of ring gear (14) . The correct temperature is -70°C (-94°F). Install ring gear (14) in the axle housing.
9. Install dowels (15) . Stake the axle housing in order to retain the dowels.
Illustration 3
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10. Lower the temperature of bearing cup (16) . Install bearing cup (16) in the end of the axle housing. The bearing cup must be seated against the shoulder of the mating surface.
Note: Allow the bearing cone and the axle to reach a uniform temperature.
11. Use a suitable driver or press in order to reset bearing cup (16) . This will ensure that bearing cup (16) is seated properly.
Note: Make sure that the rubber seals and all surfaces that contact the seals are clean and dry. After installation of the seals, apply clean SAE 30 oil on the contact surfaces of the metal seals.
12. Use Tooling (F) in order to install Duo-Cone seal (17) in the end of the axle housing. Refer to Disassembly and Assembly, "Duo-Cone Conventional Seals - Install".
13. Lower the temperature of bearing cup (13) . Install bearing cup (13) in the opposite end of the axle housing. The bearing cup must be seated against the shoulder of the mating surface.
Note: Allow the bearing cone and the axle to reach a uniform temperature.
14. Use a suitable driver or a press in order to reset bearing cup (13) . This will ensure that bearing cup (13) is seated properly.
This is the sample of the manual
Click on the download link for complete manual
Illustration 4 g00451125
15. Install Tooling (A) and a suitable lifting device (not shown) to the axle housing.
16. Use the hoist in order to install the axle housing on the axle shaft. The weight of the axle housing is approximately 136 kg (300 lb).