The document provides instructions for disassembling and assembling an alternator. It lists 30 steps for disassembly, removing components like the pulley, cover, regulator, and internal diodes. It then lists 27 steps for assembly, reinstalling these components in reverse order. Cleanliness is emphasized throughout, and care is advised when handling sensitive components to avoid damage.
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2. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 245 EXCAVATOR 95V
Configuration: 245 EXCAVATOR 95V00471-UP (MACHINE) POWERED BY 3406 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 Part Description Qty
A 6V-7070 Digital Multimeter 1
B 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.
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4. 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 g00627804
7. Remove grounded mounting screw (8) .
8. Remove regulator (9) .
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5. 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
Negative
Lead to the Heat Sink Housing to the Lead
Red Wire Black Wire
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6. 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) .
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7. 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) .
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8. 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) .
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9. 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
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10. 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 g00628067
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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11. 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 - 2019 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Fri Oct 11 09:09:50 UTC+0800 2019
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12. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 245 EXCAVATOR 95V
Configuration: 245 EXCAVATOR 95V00471-UP (MACHINE) POWERED BY 3406 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 g00628072
1. Install 3 diodes (11) in heat sink (12) .
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13. 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 g00628067
4. Press collar (42) on rotor (39) .
5. Slide retainer (41) on rotor (39) .
6. Press bearing (40) on rotor (39) .
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14. 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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15. 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) .
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16. 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) .
Illustration 10 g00627853
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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17. 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) .
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18. 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
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19. 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 16 g00627808
22. Install mounting plate (10).
Illustration 17 g00627804
23. Install regulator (9) .
24. Install grounded mounting screw (8) .
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20. Thank you very much for
your reading. Please Click
Here. Then Get COMPLETE
MANUAL. NO WAITING
NOTE:
If there is no response to
click on the link above,
please download the PDF
document first and then
click on it.
21. 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 g00627794
27. Install gasket (5) .
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22. 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 - 2019 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Fri Oct 11 09:10:45 UTC+0800 2019
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23. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 245 EXCAVATOR 95V
Configuration: 245 EXCAVATOR 95V00471-UP (MACHINE) POWERED BY 3406 ENGINE
Disassembly and Assembly
SUPPLEMENT FOR HYDRAULIC TRACK MOTOR
Media Number -SENR3402-01 Publication Date -01/12/1987 Date Updated -11/10/2001
Track Motors
SMCS - 4351-015; 4351-016
Disassemble Motors (Track)
START BY:
a) Remove track motors.
1. Put identification marks on head (2) and housing (3). Remove eight bolts (1) and head from
housing. Weight of the motor is 138 kg (304 lbs.).
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24. 2. Remove control plate (4) from head (2). Note the location of pin (5). Grease and oil suction will
be holding control plate (4) to head (2).
3. Remove O-ring seal (6) from housing (3). Remove cylinder barrel (7) from housing.
4. Remove allen head plug (8) and disc from cylinder barrel (7).
5. Remove spring (9) and shim (10) from housing.
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25. 6. Turn housing over to the drive shaft end. Remove snap ring (11).
7. Use two screwdrivers and remove cover (12) and O-ring seal.
8. Put identification marks on flange (13) to housing (3). Remove eight bolts (15) from flange
(13). The bolts were installed with loctite.
9. Use tooling (A) and remove flange (13) and rotary group (14) as an assembly from the pump
housing. Weight of flange and rotary group 50 kg (110 lbs.)
NOTE: Use heat around housing to help remove the flange and rotary group.
10. Position flange (13) and rotary group (14) as an assembly in a press. Remove ring (16) from
flange.
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26. 11. Press rotary group (14) through flange (13). Remove shim (17) from under the flange [laying
on inner bearing race (18)].
12. Remove O-ring (19) from flange (13). Remove bearing (20).
13. Position rotary group (shaft down) along with inner bearing race on tooling (B). Remove
fourteen bolts (23). Thread lock was used on the bolts at assembly. Remove plate (21) and pistons
(22).
14. Remove spherical bushings (24).
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