AVSPARE.COM
parts catalog
  1. Home
  2. Caterpillar catalog

FLEXIBLE COUPLING DRIVE (5S7891 N/S) 955L TRACK LOADER


POWER TRAIN
DRIVE GP
COOLER GP
TORQUE CONVERTER GP
OPERATOR STATION
CONTROL GP-TRANSMISSION
POWER TRAIN
TRANSMISSION GP
CONTROL GP-TRANSMISSION HYD

TRACK LOADER 955L TRACK LOADER 64J
 955L TRAXCAVATOR 64J03994-05182 (MACHINE) UEH0595S 955L 64J   (1976)

POWER TRAIN

DRIVE GP
FLEXIBLE COUPLING DRIVE
5S-7891 FLEXIBLE COUPLING DRIVE
 

#UEH0595S0080
 

5S-7891: FLEXIBLE COUPLING DRIVE

FLEXIBLE COUPLING DRIVE (5S7891 N/S)
c114046 UEH0595S
5S7891 FLEXIBLE COUPLING DRIVE Parts scheme
  For full view, you need register

Parts for your 955L TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. C [6] BOLT  
2. C [34] LOCKWASHER  
3. C [1] FLANGE  
4. [1] GASKET  
5. C [1] COVER  
6. [28] BOLT  
7. [1] FLANGE ASSEM.  
8. [1] PLUG  
9. [4] JOINT  
  C   INDICATES CHANGE
 

#UEH0595S0081
 

8K-8492: TORQUE CONVERTER COOLER LINES

TORQUE CONVERTER COOLER LINES (8K8492 N/S)
c148459 UEH0595S
8K8492 TORQUE CONVERTER COOLER LINES Parts scheme
  For full view, you need register

Parts for your 955L TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1H-3305 [4] FLANGE  
2. 0S-1588 C [14] BOLT  
3. 3B-4506 C [17] LOCKWASHER  
4. 8K-8662 [1] TUBE ASSEM.  
5. 4J-0520 C [2] SEAL  
6. 1S-0724 [1] CLIP  
7. 0T-0102 [1] BOLT  
8. 5K-4725 [5] HOSE  
9. 9M-7958 [10] CLAMP  
10. 8K-8660 [1] TUBE ASSEM.  
11. 9K-4161 [1] TUBE  
12. 9K-4160 [1] TUBE  
13. 0S-1595 [2] BOLT  
  3B-4508 [2] LOCKWASHER  
  4B-4280 [2] WASHER  
14. 9K-4162 [1] BRACKET  
15. 1D-4717 [4] NUT  
16. 4B-4278 [2] WASHER  
17. 7J-0729 [2] CLIP  
18. 7J-0728 [2] CLIP  
19. 9K-4159 [1] TUBE  
20. 1H-5948 C [2] CLAMP  
21. 8K-8668 [1] TUBE ASSEM.  
22. 6K-2490 [1] GASKET  
23. 6K-2511 [1] TUBE ASSEM.  
24. 9F-5940 [1] GASKET  
25. 8B-8679 C [2] SPACER  
26. 1A-2029 C [2] BOLT  
27. 6M-8604 C [2] CLAMP  
  C   INDICATES CHANGE
 

#UEH0595S0082
 

4S-5889: TORQUE CONVERTER GROUP

4S5889 TORQUE CONVERTER GROUP
Part of 4S8564 Power Shift Transmission Arrangement shown on Page 53
c207856 UEH0595S
4S5889 TORQUE CONVERTER GROUP Parts scheme
  For full view, you need register

Parts for your 955L TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4S-5861 [1] ADAPTER  
2. 4B-3665 C [3] BEARING  
3. 3J-0634 [1] SEAL  
4. 0S-1588 [6] BOLT  
5. 3B-4506 [36] LOCKWASHER  
6. 9S-4191 [1] PLUG  
  3J-1907 [1] SEAL  
7. 8S-9058 [1] COVER  
8. 5H-1901 [1] BEARING  
9. 5S-4408 [1] SEAL  
10. 3J-8903 [1] RING  
11. 4S-5879 [1] SEAL  
12. 0S-1594 [2] BOLT  
13. 4S-5897 [1] HOUSING ASSEM.  
  8B-1312 [2] DOWEL  
14. 8M-5254 [1] SEAL  
15. 1A-2029 [30] BOLT  
16. 9S-2811 [1] GASKET  
17. 1T-0975 Y [1] TORQUE CONVERTER GROUP  
    (Separate Illustration)
18. 4S-5862 [1] RETAINER  
19. 4H-0478 [1] RING  
20. 4S-5875 [1] RING  
21. 4S-5946 [1] SHAFT  
22. 4S-5877 [1] CARRIER  
23. 2B-0947 [7] BOLT  
24. 5M-7339 [1] WASHER  
25. 9M-1367 [1] LOCK  
26. 3S-9897 [1] SHAFT  
27. 1S-3743 [1] BEARING  
28. 3K-2559 [2] RING  
29. 8S-9059 [1] GEAR (37 Teeth- Idler)  
30. 8S-9061 [1] GEAR (44 Teeth- Drive)  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEH0595S0083
 

1T-0975: TORQUE CONVERTER ASSEMBLY

1T975 TORQUE CONVERTER ASSEMBLY
Torque Converter Serial No. 35T53981-Up
Part of Torque Converter shown on Page 56
c159038 UEH0595S
1T0975 TORQUE CONVERTER ASSEMBLY Parts scheme
  For full view, you need register

Parts for your 955L TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8B-5964 [1] RACE  
2. 1T-0737 [6] RACE  
3. 1A-2029 [16] BOLT  
4. 4B-4158 [2] SCREW  
5. 5M-2477 [1] PLATE (name)  
6. 1T-0723 [1] TURBINE ASSEM.  
    (Includes)
7. 4B-4459 [16] RIVET  
8. 1T-0724 [1] IMPELLER  
9. 1T-0727 [1] HUB  
10. 1T-0974 [1] GEAR ASSEM. (40 teeth)  
    (Includes)
11. 1T-0969 C [1] BEARING  
12. 1T-0972 [1] CARRIER ASSEM.  
    (Includes)
13. 1T-0902 [1] BEARING  
14. 1T-0947 [1] FLANGE ASSEM.  
    (Includes)
15. 1T-0767 [1] BEARING  
16. 1T-0765 [8] BOLT  
17. 1T-0805 [2] RETAINER  
18. 0S-1618 [24] BOLT  
  1T-0738 [24] WASHER  
19. 1T-0743 [1] STATOR  
20. 1T-0949 [1] HOUSING  
21. 1T-0735 [1] RING  
22. 2F-6067 [2] RING  
23. 1T-0736 [3] BEARING  
  C   INDICATES CHANGE
 

#UEH0595S0084
 

5K-6179: TRANSMISSION CONTROL

TRANSMISSION CONTROL (5K6179 N/S)--As Viewed from Front of Machine
c131136 UEH0595S
5K6179 TRANSMISSION CONTROL Parts scheme
  For full view, you need register

Parts for your 955L TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5K-6680 [1] LEVER ASSEM.  
2. 3A-2031 [1] LOCK ASSEM.  
3. 7M-0706 [1] KNOB  
4. 3A-2265 [1] ROD  
5. 5K-8682 [1] LEVER  
6. 2M-8908 [1] KNOB  
7. 3B-4628 [1] COTTER PIN  
8. 1A-2029 [3] BOLT  
9. 3B-4506 [13] LOCKWASHER  
10. 4M-0496 [1] BOLT  
11. 4M-0497 [1] NUT  
12. 5B-9079 [4] NUT  
13. 6K-1212 [1] ROD  
14. 1A-8912 [1] WASHER  
15. 3B-4607 [1] COTTER PIN  
16. 3B-4615 [2] COTTER PIN  
17. 4B-4278 [1] WASHER  
18. 5K-6673 [1] SHAFT  
19. 4J-2474 [1] LUG  
20. 9S-1303 [1] PIN  
21. 3B-4617 [1] COTTER PIN  
22. 0S-0175 [1] PIN  
23. 4D-4971 [1] SPRING  
24. 0S-1591 [3] BOLT  
25. 1D-4717 [8] NUT  
26. 7M-5915 [1] PIN  
27. 5M-2894 [1] WASHER  
28. 1B-4203 [1] NUT  
29. 3D-8525 [1] LEVER  
30. 1B-8706 [4] KEY  
31. 3B-1915 [5] BOLT  
32. 7F-7983 [2] BEARING  
33. 8F-7702 [2] SEAL  
  5K-6577 [1] ROD ASSEM.  
34. 5K-6678 [1] ROD  
35. 5B-9079 [1] NUT  
36. 4D-4064 [1] ROD END  
37. 4B-4283 [4] WASHER  
38. 5K-6583 [1] YOKE ASSEM.  
  4K-3893 [2] BEARING  
    (Part of 5K6583 Assem.)
39. 5K-6584 [1] BRACKET  
40. 3B-8489 [1] FITTING  
41. 6K-0015 [1] LEVER  
42. 5K-0041 [1] BELLCRANK  
43. 4K-3893 [2] BEARING  
44. 5K-6580 [1] BRACKET ASSEM.  
45. 5H-4730 [1] PIN  
    (Part of 5K6580 Assem.)
46. 4H-4851 [1] LEVER  
47. 6K-6928 [1] ROD END  
  5K-6946 [1] ROD ASSEM.  
48. 5B-9079 [1] NUT  
49. 5K-6653 [1] ROD  
50. 4D-4064 [1] ROD END  
51. 5K-6575 [1] LEVER  
52. 5K-6687 [1] SHAFT  
53. 0S-1588 [5] BOLT  
54. 4D-4064 [3] ROD END  
 

#UEH0595S0085
 

4S-5997: TRANSMISSION

TRANSMISSION (4S5997 N/S)--As Viewed from Front of Machine
Serial No. 64J3994 to 64J4277, 64J4285, 64J4286 and 64J4475 inclusive
Part of 4S8564 Power Shift Transmission Arrangement shown on Page 53
Planetary Transmission, Hydraulic Control and 3S6860 Valve parts
are shown on Pages 60, 61, 62, 63 and 66
c134636 UEH0595S
4S5997 TRANSMISSION Parts scheme
  For full view, you need register

Parts for your 955L TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4S-8561 [1] CASE ASSEM.  
2. 9M-2151 [16] STUD  
3. 9H-3249 [2] BEARING  
4. 1M-3833 [2] DOWEL  
5. 3D-0490 [5] STUD  
    (Parts of 4S8561 Case Assem.)
6. 4S-8610 [1] GASKET  
7. 1D-4717 [1] NUT  
8. 3B-4506 [23] LOCKWASHER  
9. 8S-5820 [1] BREATHER  
10. 5M-9729 [1] COVER  
11. 1M-2922 [1] GASKET  
12. 4S-8613 [1] COVER ASSEM.  
13. 7M-7794 [3] STUD  
    (Part of 4S8613 Cover Assem.)
14. Y [1] HYDRAULIC CONTROL  
    (See Separate Illustration)
15. 0S-1619 [4] BOLT  
16. 8M-4389 [2] SEAL  
17. 3S-6860 Y [1] RELIEF VALVE GROUP  
    (See Separate Illustration)
18. 8M-8514 [1] SEAL  
19. 8B-6599 [1] PLUG  
  0L-1124 [1] GASKET  
20. Y [1] PLANETARY TRANSMISSION  
    (See Separate Illustration)
21. 0S-1591 [1] BOLT  
22. 5S-6981 [1] RETAINER  
23. 5S-6975 [1] RETAINER  
24. 5S-6980 [1] RING  
25. 5M-7908 [1] PLUG ASSEM.  
  3J-1907 [1] SEAL  
    (Part of 5M7908 Plug Assem.)
26. 4S-5984 [1] SHAFT  
  Y   SEPARATE ILLUSTRATION
 

#UEH0595S0086
 

4S-5997: TRANSMISSION

TRANSMISSION (4S5997 N/S)--As Viewed from Front of Machine
Serial No. 64J4278 to 64J4284, 64J4287 to 64J4474 and 64J4476-Up
Part of 4S8564 Power Shift Transmission Arrangement shown on Page 53
Planetary Transmission, Hydraulic Control and 3S6860 Valve
parts are shown on Pages 60, 61, 62, 63 and 66
c138949 UEH0595S
4S5997 TRANSMISSION Parts scheme
  For full view, you need register

Parts for your 955L TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4S-8561 [1] CASE ASSEM.  
2. 9M-2151 [16] STUD  
3. 9H-3249 [2] BEARING  
4. 1M-3833 [2] DOWEL  
5. 3D-0490 [5] STUD  
6. 4S-8610 [1] GASKET  
7. 1D-4717 C [16] NUT  
8. 3B-4506 C [20] LOCKWASHER  
9. 8S-5820 [1] BREATHER  
10. 4S-5984 [1] SHAFT  
11. 5S-6975 [1] RETAINER  
12. 4S-8613 C [1] COVER ASSEM.  
13. 5S-6980 [1] RING  
14. Y [1] HYDRAULIC CONTROL  
    (Separate Illustration)
15. 0S-1619 [4] BOLT  
16. 8M-4389 [2] SEAL  
17. 3S-6860 Y [1] RELIEF VALVE GROUP  
    (Separate Illustration)
18. 8M-8514 [1] SEAL  
19. 8B-6599 [1] PLUG  
  0L-1124 [1] GASKET  
20. Y [1] PLANETARY TRANSMISSION  
    (Separate Illustration)
21. 0S-1591 [1] BOLT  
22. 5S-6981 [1] RETAINER  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEH0595S0087
 

4S-6000: PLANETARY GP

4S6000 PLANETARY TRANSMISSION GROUP--Part 1 of 2
Part of Transmission shown on Page 59
c225868 UEH0595S
4S6000 PLANETARY GP Parts scheme
  For full view, you need register

Parts for your 955L TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4S-5979 [1] CARRIER ASSEM.  
    (Includes)
  4S-8537 [1] DOWEL  
2. 3S-1259 [4] RING  
3. 2K-5986 [7] PIN  
4. 4S-5981 [1] GEAR (82 teeth)  
5. 4S-5937 [1] HOUSING  
6. 3S-1188 [16] DISC ASSEM.  
7. 8S-3522 R [11] PLATE  
8. 4S-5972 [1] HOUSING ASSEM.  
    (Includes)
  5M-7937 [4] DOWEL  
9. 8S-3373 [1] RING  
10. 3S-0988 [1] PISTON  
11. 4S-5948 [1] GEAR (84 teeth)  
12. 9M-4355 [11] DAMPER  
13. 4S-5932 [1] HOUSING  
14. 4S-5974 [1] HOUSING ASSEM.  
    (Includes)
  5M-7937 [4] DOWEL  
15. 4S-5943 [4] PISTON  
16. 5S-7009 [1] PLATE ASSEM.  
    (Includes)
  4B-9880 [1] BALL  
  5S-6974 [1] PLATE  
17. 9H-5546 [5] PIN  
18. 9H-5537 [20] SPRING  
19. 2S-0669 [9] BEARING  
20. 7G-2520 C [3] GEAR (22 teeth)  
21. 4S-8534 [3] SHAFT ASSEM.  
    (Each Includes)
22. 3S-0036 [3] PLUG  
23. 5M-7878 [2] RING  
24. 7G-2477 C [3] GEAR (20 teeth)  
25. 8S-3553 [1] PLATE (Identification)  
26. 7B-3028 [2] SCREW  
    (Mounted on Transmission Case)
27. 4S-8531 [3] SHAFT ASSEM.  
    (Each Includes)
28. 3S-0036 [3] PLUG  
29. 6F-0155 [1] RING  
30. 4S-8538 [1] BEARING  
31. 4S-5998 [1] SPACER  
32. 1T-0649 [1] RING  
33. 1S-3781 [2] RING  
34. 3S-8022 [2] BEARING  
35. 1S-8868 [1] RING  
36. 2S-0613 [1] RING  
37. 3S-8021 [4] RACE  
  C   INDICATES CHANGE
  R   REMFG PART MAY BE AVAILABLE
 

#UEH0595S0088
 

4S-6000: PLANETARY GP

4S6000 PLANETARY TRANSMISSION GROUP--Part 2 of 2
Part of Transmission shown on Page 59
c225869 UEH0595S
4S6000 PLANETARY GP Parts scheme
  For full view, you need register

Parts for your 955L TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8S-3371 [4] SEAL  
2. 8S-3372 [5] RING  
3. 4S-5947 [1] GEAR (81 teeth)  
4. 4S-5940 [1] CARRIER ASSEM.  
    (Includes)
  4S-8537 [1] DOWEL  
5. 4S-8546 [1] BEARING  
6. 5S-1041 [1] RING  
7. 7G-0896 C [18] WASHER  
8. 7G-2473 C [1] GEAR (33 teeth)  
9. 4L-9825 [1] BEARING  
10. 5S-6979 [1] RING  
11. 5S-7014 [1] GEAR (81 teeth)  
12. 5S-7013 [1] GEAR (83 teeth)  
13. 5S-6973 [1] GEAR (90 and 101 teeth)  
14. 9H-6530 [8] BOLT 42.6 cm(16.75 in.) long  
15. 4M-4924 [3] BOLT 36.8 cm(14.50 in.) long  
16. 2M-0849 [11] WASHER  
17. 7G-2487 C [6] GEAR (28 teeth)  
18. 3S-2708 [9] PIN  
19. 5S-6978 [3] SHAFT  
20. 5S-7010 [3] SHAFT  
21. 5M-2051 C [9] BEARING  
22. 5H-6199 [1] RING  
23. 1M-3937 [1] RING  
24. 5S-4491 [1] CAGE  
25. 7F-2742 [1] BEARING  
26. 0L-1143 [3] BOLT  
27. 5M-2894 [3] WASHER  
28. 5S-4493 [1] CARRIER  
29. 5S-6972 [1] GEAR (27 and 25 teeth)  
30. 5S-7023 [1] CARRIER  
31. 4L-9564 [1] SEAL  
32. 2S-8939 [1] RING  
33. 9F-7104 [1] RING  
34. 7G-0891 C [12] WASHER  
35. 4M-9592 [30] SPRING  
36. 3K-2510 [5] PIN  
37. 4S-5945 [1] GEAR (38 teeth)  
38. 4S-5944 [1] GEAR (45 teeth)  
39. 4S-5973 [1] HOUSING ASSEM.  
    (Includes)
  5M-7937 [2] DOWEL  
  4B-9782 [2] BALL  
  C   INDICATES CHANGE
 

#UEH0595S0089
 

3S-4300: TRANSMISSION HYDRAULIC CONTROL

TRANSMISSION HYDRAULIC CONTROL (3S4300 N/S)--Part 1 of 2
Part of Transmission shown on Page 59
c217021 UEH0595S
3S4300 TRANSMISSION HYDRAULIC CONTROL Parts scheme
  For full view, you need register

Parts for your 955L TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7B-2500 [1] RING  
2. 8M-4389 [4] SEAL  
3. 3S-2582 [1] SLEEVE  
4. 5B-9603 [2] BOLT  
5. 5M-2894 [7] WASHER  
6. 1S-3208 [2] DETENT ASSEM.  
    (Includes)
  1S-3207 [1] DETENT  
7. 1S-3206 [2] BEARING  
8. 8P-4764 C [1] PIN  
9. 9M-2022 [1] DOWEL  
10. 9S-1366 [1] BOLT  
11. 1D-4719 [1] NUT  
12. 3B-4508 [1] LOCKWASHER  
13. 4B-4280 [1] WASHER  
14. 1M-3850 [1] SPACER  
15. 1B-4203 [2] NUT  
16. 7M-5915 [2] PIN  
17. 3S-4333 [1] CAM ASSEM.  
  9M-2089 [1] DOWEL  
    (Part of 3S4333 Cam Assem.)
18. 7M-1224 [2] SPRING  
19. 3S-2676 [1] SLEEVE  
20. 4S-8551 [1] CAM ASSEM.  
  9M-2089 [1] DOWEL  
    (Part of 4S8551 Cam Assem.)
21. 1S-9810 [13] BOLT  
22. 9M-1974 [16] WASHER  
23. 9F-8999 [3] BOLT  
24. 2S-0629 [3] BOLT  
  C   INDICATES CHANGE
 

Information:

Specifications
Flexible Coupling Drive<BR> (5S7891)
955 TRACK-TYPE LOADER POWER TRAIN
Checking And Adjusting Alignment Of The Flexible Coupling Drive
955L POWER TRAIN
Flexible Coupling Drive (6P3984)
955L POWER TRAIN
Flexible Coupling Drive
3304 VEHICULAR ENGINE
Checking And Adjusting Alignment Of The Flexible Coupling Drive
3304 VEHICULAR ENGINE
Tool Operating Manual
M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}
M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}
Disassembly and Assembly
Flexible Coupling Drive
955K TRACK-TYPE LOADER POWER TRAIN
Flexible Coupling
955L TRACK-TYPE LOADER POWER TRAIN
Torque Converter And Pump Drive
955L TRACK-TYPE LOADER POWER TRAIN
Pump Drive
955L TRACK-TYPE LOADER POWER TRAIN
Service Magazine
Bearing Preload Loss In Power Take Off: Increased Torque On Nut{3107}
1981/04/27

Caterpillar Parts SIS Catalog 955L :

POWER SHIFT TRANSMISSION ARRANGEMENT
4S-8564 POWER SHIFT TRANSMISSION ARRANGEMENT
WIRING HARNESS ASSEMBLY
7K-9179 WIRING HARNESS ASSEMBLY
SWITCH AS-DISCONNECT
7H-7290 SWITCH AS-DISCONNECT
WIRING DIAGRAM
WIRING DIAGRAM
7K-8693 BATTERY AND WIRING
BATTERY AND WIRING
7K-8693 BATTERY AND WIRING
LAMP GP
9M-1305 LAMP GP
LAMP GP-DASH
8M-7677 LAMP GP-DASH
TORQUE CONVERTER COOLER LINES
8K-8492 TORQUE CONVERTER COOLER LINES
TORQUE CONVERTER GROUP
4S-5889 TORQUE CONVERTER GROUP
TORQUE CONVERTER ASSEMBLY
1T-0975 TORQUE CONVERTER ASSEMBLY
TRANSMISSION CONTROL
5K-6179 TRANSMISSION CONTROL
TRANSMISSION
4S-5997 TRANSMISSION
TRANSMISSION
4S-5997 TRANSMISSION
PLANETARY GP
4S-6000 PLANETARY GP
4S-6000 PLANETARY GP

Truck sale:

Caterpillar 955L
 
Caterpillar 955L
- track loaders
FOLEY EQUIPMENT COMPANY
Caterpillar 955L, Construction
19,200 
Caterpillar 955L, Construction
- track loaders
FOLEY EQUIPMENT COMPANY
Caterpillar 955L, Construction
 
Caterpillar 955L, Construction
- track loaders
NMC
Caterpillar 955L, Construction
 
Caterpillar 955L, Construction
- track loaders
FABICK CAT
Caterpillar 955L, Construction
17,000 
Caterpillar 955L, Construction
- track loaders
HOLT CAT
Back to top
Contacts Request list Affiliate disclosure
The names Cat, Caterpillar, John Deere, Komatsu, Volvo, Hitachi, Doosan, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
AVSpare.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only. Cat® and Caterpillar® are registered trademarks of Caterpillar, Inc.