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CAT Caterpillar 926 Service Repair Manual PDF Download

Page 1

926 WHEEL LOADER

Printed by Heavy Equipment Manuals v2.20

Printed in U.S.A

Heavy Equipment Manuals


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  Product: WHEEL LOADER Model: 926 WHEEL LOADER 94Z Configuration: 926 WHEEL LOADER 94Z00001-02208 (MACHINE) POWERED BY 3204 ENGINE

Disassembly and Assembly 26SI Series Alternator Media Number -RENR1252-01

Publication Date -01/10/1999

Date Updated -09/10/2001

i01167078

Alternator - Assemble SMCS - 1405-016

Assembly Procedure 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) .

g00628072


Illustration 2

g00628068

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

4. Press collar (42) on rotor (39) . 5. Slide retainer (41) on rotor (39) . 6. Press bearing (40) on rotor (39) .

g00628067


Illustration 4

g00628063

7. Press housing (31) on rotor (39) and bearing (40) . 8. Install 4 screws (38) in housing (31) .

Illustration 5

g00628057

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.


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Illustration 6

g00628043

10. Press cap (36) in housing (14) .

Illustration 7

g00628041

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

g00628037

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

g00628035

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) .


Illustrat)on 10

g00627853

Note: Many of the alternator's internal components are covered with dielectric grease. If the grease is removed, reapply the grease.

Illustration 11

g00627855

14. Install Insulator (29). Install the heat sink and diode assembly (12) in housing (14) .


Illustration 12

g00627840

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

g00627832

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

g00627820

20. Install the screw and insulator (16). Connect capacitor lead (17) .

Illustration 15

g00627810

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

Current Flow of the Output Diodes

Current Flow of the Ground Diodes

Lead to the Heat Sink

Housing to the Lead

Red Wire

Black Wire

Negative


Illustration 16

g00627808

22. Install mounting plate (10).

Illustration 17

23. Install regulator (9) . 24. Install grounded mounting screw (8) .

g00627804


Illustration 18

g00627796

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.

Illustration 19

27. Install gasket (5) .

g00627794


Illustration 20

g00627792

28. Position cover (4). Install 7 screws (3) .

Illustration 21

g00627790

29. Position plate (2). Install 4 screws (1) . 30. Install the fan, the pulley, the washer, and the pulley nut. Copyright 1993 - 2021 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees.

Wed Sep 15 13:37:23 UTC+0530 2021


  Product: WHEEL LOADER Model: 926 WHEEL LOADER 94Z Configuration: 926 WHEEL LOADER 94Z00001-02208 (MACHINE) POWERED BY 3204 ENGINE

Disassembly and Assembly 26SI Series Alternator Media Number -RENR1252-01

Publication Date -01/10/1999

Date Updated -09/10/2001

i01167081

Alternator - Disassemble SMCS - 1405-015

Disassembly Procedure Table 1 Required Tools Tool

Part Number

A

6V-7070

B

Part Description

Qty

Digital Multimeter

1

Variable Power Supply

1

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

g00627790

2. Remove 4 screws (1). Remove plate (2) .

Illustration 2

3. Remove 7 screws (3). Remove cover (4) .

g00627792


Illustration 3

g00627794

4. Remove gasket (5) .

Illustration 4

g00627796

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) .

g00627804


Illustration 6

g00627808

9. Remove mounting plate (10). The mounting plate may be stuck to the regulator.

Illustration 7

g00627810

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

Lead to the Heat Sink

Housing to the Lead

Red Wire

Black Wire

Negative


Illustration 8

g00627820

11. Remove the screw and insulator (16). Disconnect capacitor lead (17) .

Illustration 9

g00627832

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

g00627840

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

g00627853

Note: Many of the alternator's internal components are covered with dielectric grease. If the grease is removed, reapply the grease.


Illustration 12

g00627855

17. Remove the heat sink and diode assembly (12) from housing (14). Insulator (29) may be stuck to heat sink (12) .

Illustration 13

g00628035

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

g00628037

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

g00628041

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

g00628043

21. Position a small screwdriver in slot (35). Pry cap (36) from housing (14) .

Illustration 17

g00628057

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

g00628063

23. Remove 4 screws (38) from housing (31) . 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) .

g00628067


Illustration 20

g00628068

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

g00628072

30. Remove diode (11) from heat sink (12) . Copyright 1993 - 2021 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees.

Wed Sep 15 13:37:05 UTC+0530 2021


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

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  Product: WHEEL LOADER Model: 926 WHEEL LOADER 94Z Configuration: 926 WHEEL LOADER 94Z00001-02208 (MACHINE) POWERED BY 3204 ENGINE

Disassembly and Assembly N3 Series Brushless Alternators Media Number -SENR2082-01

Publication Date -01/03/2002

Date Updated -12/03/2002

i01688996

Alternator - Assemble SMCS - 1405-016

Assembly Procedure Table 1 Tooling that is needed

A

B

Soldering iron (180 watt) Vise or clamping support with vee blocks Press 8H-8581

Feeler Gauges

3

1P-0510

Driver Set

1

1P-0466

Plate

1

1P-0529

Handle

1

6L-5897

Bolt

1


Illustration 1

g00871248

1. Install the roller bearing (1) with tooling (B) . Note: If necessary, apply grease to the bearing.

Illustration 2

2. Install the ring (2) in the rear frame.

g00871460


Illustration 3

g00871252

3. Install the insulators for terminal "B+" and terminal "D+".

Illustration 4

g00871347

4. Install the "R" terminal, if the "R" terminal was replaced. 5. Install the rectifier (3) in the rear frame. 6. Install the two screws. Solder the sleeve (4) over terminal "R". 7. Install the following components on terminals: "D+", "B+" and B-: terminal insulators, washers and nuts.


Illustration 5

g00871376

8. Position the stator frame (7) on the rear frame (5). Use the marks on the alternator that were made in the disassembly procedure for alignment.

Illustration 6

g00871382

9. Solder the leads for the stator winding (8) to the terminals for the rectifier (6) .


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