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

8N-4745 COVER GP-VALVE MECHANISM S/N 6NC2649-UP; 8TD10430-99999 PART OF 125-6715, 151-5310 ENGINE AR D6G SR


BASIC ENGINE
VALVE MECHANISM GP
CRANKSHAFT GP
CYLINDER BLOCK GP
CYLINDER HEAD GP
DAMPER GP
DRIVE GP-ACCESSORY
DRIVE GP-FAN

TRACK-TYPE TRACTOR D6G SR TRACK-TYPE TRACTOR 3SR
 D6G Track-Type Tractor Super Rural 3SR00001-UP (MACHINE) POWERED BY 3306 Engine SEBP2578 D6G SR 3SR   (1996)

BASIC ENGINE

VALVE MECHANISM GP
COVER GP-VALVE MECHANISM
8N-4745 COVER GP-VALVE MECHANISM
VALVE MECHANISM GP
7C-7013 VALVE MECHANISM GP
VALVE MECHANISM GP
7N-8026 VALVE MECHANISM GP
 

#SEBP25780010
 

8N-4745: COVER GP-VALVE MECHANISM

8N-4745 COVER GP-VALVE MECHANISM
S/N 6NC2649-UP; 8TD10430-99999
PART OF 125-6715, 151-5310 ENGINE AR
i00125377 SEBP2578
8N4745 COVER GP-VALVE MECHANISM Parts scheme
  For full view, you need register

Parts for your D6G SR TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9M-1974 [15] WASHER-HARD (8.8X16X2-MM THK)  
2. 0S-1617 [15] BOLT (5/16-18X0.75-IN)  
3. 2W-1086 [1] COVER AS-CYLINDER HEAD  
4. 8S-1605 [1] SEAL-VALVE COVER  
 

#SEBP25780011
 

2Y-5206: CRANKSHAFT GP

2Y-5206 CRANKSHAFT GP
S/N 6NC2649-UP; 8TD10430-99999
PART OF 125-6715, 151-5310 ENGINE AR
FIELD REPLACEMENT FOR 2Y-4517 CRANKSHAFT AS
i00125161 SEBP2578
2Y5206 CRANKSHAFT GP Parts scheme
  For full view, you need register

Parts for your D6G SR TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 100-3652 [2] PLATE-THRUST  
2. 232-3233 C [7] BEARING-MAIN (STANDARD)  
  8N-8225 AB BEARING-MAIN (0.25-MM US)  
  8N-8226 AB BEARING-MAIN (0.51-MM US)  
  8N-8227 AB BEARING-MAIN (0.76-MM US)  
  8N-8228 AB BEARING-MAIN (0.51-MM OS)  
  8N-8229 AB BEARING-MAIN (0.25-MM US, 0.51-MM OS)  
  4P-7305 AB BEARING-MAIN (0.51-MM OS, 0.51-MM US)  
  4P-7306 AB BEARING-MAIN (0.51-MM OS, 0.76-MM US)  
3. 5Y-1546 [1] CRANKSHAFT AS  
4. 9F-2247 [6] PLUG-PIPE  
5. 1W-4405 [1] GEAR-CRANKSHAFT (40-TEETH)  
6. 5H-2671 [1] KEY-WOODRUFF  
  A   NOT PART OF THIS GROUP
  B   USE AS REQUIRED
  C   CHANGE FROM PREVIOUS TYPE
 

#SEBP25780012
 

1N-3576: CYLINDER BLOCK GP

1N-3576 CYLINDER BLOCK GP
S/N 8TD10430-99999
FIELD REPLACEMENT FOR @@@@@ 7N-6550@@@@@, 6N-7727 KIT-CYLINDER BLOCK, WHEN USED WITH
i00125118 SEBP2578
1N3576 CYLINDER BLOCK GP Parts scheme
  For full view, you need register

Parts for your D6G SR TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7M-4046 [4] BUSHING  
2. 3J-6019 [1] PLUG  
3. 8K-1207 [2] DOWEL  
4. 4B-5387 [1] PLUG-CUP  
5. 1S-9540 [1] DOWEL  
6. 5B-7652 [2] DOWEL  
7. 6N-8003 [7] CAP-CRANKSHAFT BEARING  
8. 4B-3938 [1] PLUG-CUP  
9. 8B-6349 [2] DOWEL  
10. 5S-8462 [1] STUD  
11. 8N-4110 [1] BUSHING  
12. 4B-9782 [1] BALL  
13. 7S-3224 [14] BOLT (5/8-11X5.25-IN)  
  2S-5658 [14] WASHER-HARD (17X29X3-MM THK)  
 

#SEBP25780013
 

7N-6550: CYLINDER BLOCK GP

7N-6550 CYLINDER BLOCK GP
S/N 6NC2649-UP; 8TD10430-99999
PART OF 8N-5286 CYLINDER BLOCK GP
FIELD REPLACEMENT ORDER @@@@@ 1N-3576@@@@@, 6N-7727 KIT-CYLINDER BLOCK
i00125348 SEBP2578
7N6550 CYLINDER BLOCK GP Parts scheme
  For full view, you need register

Parts for your D6G SR TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5S-6670 [18] SEAL-O-RING  
2. 371-5941 [6] LINER-CYLINDER  
  104-5512 ABJ INSERT-LINER SEAT (0.822-MM THK)  
  104-5518 ABJ INSERT-LINER SEAT (1.605-MM THK)  
  104-5527 ABJ INSERT-LINER SEAT (2.71-MM THK)  
  104-5530 ABJ INSERT-LINER SEAT (5.21-MM THK)  
    (REFER TO SEBF8198 FOUND IN SISWEB FOR LINER INSERTS.)
3. 2W-6134 [6] BAND-FILLER  
4. 7S-3224 [14] BOLT (5/8-11X5.25-IN)  
5. 6N-8003 [7] CAP-CRANKSHAFT BEARING  
6. 2S-5658 [14] WASHER-HARD (17X29X3-MM THK)  
  A   NOT PART OF THIS GROUP
  B   USE AS REQUIRED
  J   TO REPAIR LIGHT DAMAGE DUE TO EROSION/FRETTING IN THE LINER FLANGE SEATING AREA
 

#SEBP25780014
 

8N-5286: CYLINDER BLOCK GP

8N-5286 CYLINDER BLOCK GP
S/N 6NC2649-UP; 8TD10430-99999
PART OF 125-6715, 151-5310 ENGINE AR
i00125378 SEBP2578
8N5286 CYLINDER BLOCK GP Parts scheme
  For full view, you need register

Parts for your D6G SR TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7N-6550 Y [1] CYLINDER BLOCK GP  
2. 7M-4046 [4] BUSHING  
3. 8K-1207 [2] DOWEL  
4. 3S-5496 [1] SEAL-O-RING  
5. 8B-6349 [2] DOWEL  
6. 7N-7998 [1] PLATE-BLOCK  
7. 115-7550 [1] GASKET-PLATE  
8. 8T-6764 [1] PLUG-PIPE (1/8-27-THD)  
9. 8T-6763 [1] PLUG-PIPE (1/4-18-THD)  
10. 8T-6765 [4] PLUG-PIPE (1/4-18-THD)  
11. 8M-9307 [1] PLUG (ENGINE OIL)  
12. 8T-6762 [3] PLUG-PIPE (1/2-14-THD)  
13. 5B-7652 [2] DOWEL  
14. 8N-4110 [1] BUSHING  
15. 4B-5387 [1] PLUG-CUP  
16. 4B-9782 [1] BALL  
17. 1S-9540 [1] DOWEL  
18. 5S-8462 [1] STUD  
19. 4B-3938 [1] PLUG-CUP  
20. 6F-7062 [1] WASHER (12.7X19.05X1.83-MM THK)  
  Y   SEPARATE ILLUSTRATION
 

#SEBP25780015
 

8N-0246: CYLINDER HEAD GP

8N-0246 CYLINDER HEAD GP
S/N 6NC2649-UP; 8TD10430-99999
PART OF 125-6715, 151-5310 ENGINE AR
FIELD REPLACEMENT ORDER @@@@@ 8N-6796@@@@@
i00428093 SEBP2578
8N0246 CYLINDER HEAD GP Parts scheme
  For full view, you need register

Parts for your D6G SR TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-7144 [12] SPRING-VALVE  
2. 1W-5300 [12] ROTOCOIL AS  
    (EACH INCLUDES)
  103-2454 [1] SPRING-VALVE  
  6N-7174 [1] SHIELD-OIL  
3. 2A-4429 [24] LOCK-RETAINER  
4. 7N-8018 [6] SEAL  
5. 9Y-1798 [18] SEAL  
6. 100-7861 [6] VALVE-EXHAUST (EXHAUST)  
7. 100-7860 [6] VALVE-INLET  
8. 111-8015 [1] GASKET AS-CYLINDER HEAD  
9. 3B-0623 [6] PLUG-CUP  
10. 3S-8313 [7] PLUG-CUP  
11. 3S-5496 [1] SEAL-O-RING  
12. 8T-6763 [1] PLUG-PIPE (1/4-18-THD)  
13. 107-0268 [6] INSERT-VALVE SEAT (INLET)  
14. 107-0265 [6] INSERT-VALVE SEAT (EXHAUST)  
15. 148-7502 [12] GUIDE-VALVE  
16. 3P-1896 [13] PLUG-CUP  
17. 8T-6762 B [3] PLUG-PIPE (1/2-14-THD)  
  B   USE AS REQUIRED
  R   REMANUFACTURED PART MAY BE AVAILABLE
 

#SEBP25780016
 

8N-6796: CYLINDER HEAD GP

8N-6796 CYLINDER HEAD GP
S/N 8TD10430-99999
FIELD REPLACEMENT FOR @@@@@ 8N-0246@@@@@
FIELD INSTALLATION
i00976118 SEBP2578
8N6796 CYLINDER HEAD GP Parts scheme
  For full view, you need register

Parts for your D6G SR TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 148-7502 [12] GUIDE-VALVE  
2. 5M-2894 [4] WASHER-HARD (10.2X18.5X2.5-MM THK)  
3. 8T-6762 [3] PLUG-PIPE (1/2-14-THD)  
4. 5S-6735 [1] GASKET  
5. 1P-6367 [1] COVER  
6. 0S-1594 [4] BOLT (3/8-16X1-IN)  
7. 8T-6763 [1] PLUG-PIPE (1/4-18-THD)  
8. 8N-4485 [1] VALVE AS-VENT  
9. 107-0265 [6] INSERT-VALVE SEAT (EXHAUST)  
10. 107-0268 [6] INSERT-VALVE SEAT (INLET)  
11. 3B-0623 [6] PLUG-CUP  
12. 3S-8313 [7] PLUG-CUP  
13. 3P-1896 [13] PLUG-CUP  
 

#SEBP25780017
 

1W-7733: DAMPER GP

1W-7733 DAMPER GP
S/N 6NC2649-UP; 8TD10430-99999
PART OF 125-6715, 151-5310 ENGINE AR
i00353399 SEBP2578
1W7733 DAMPER GP Parts scheme
  For full view, you need register

Parts for your D6G SR TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 341-2431 [1] DAMPER AS  
2. 0S-1587 [6] BOLT (1/2-13X1.75-IN)  
3. 7B-5163 [1] BOLT (3/4-16X4.75-IN)  
4. 5S-9948 [1] WASHER  
5. 7W-5687 [1] HUB-CRANKSHAFT  
6. 1N-4375 [1] ADAPTER-DAMPER  
 

#SEBP25780018
 

126-0600: DRIVE GP-ACCESSORY

126-0600 DRIVE GP-ACCESSORY
S/N 6NC2649-UP; 8TD10430-99999
PART OF 125-6715, 151-5310 ENGINE AR
i00513270 SEBP2578
1260600 DRIVE GP-ACCESSORY Parts scheme
  For full view, you need register

Parts for your D6G SR TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4W-9773 [1] GEAR-HYDRAULIC PUMP DRIVE (57-TEETH)  
2. 9M-5894 [1] SEAL-O-RING  
3. 126-0599 [1] ADAPTER AS-HYDRAULIC PUMP  
  9M-8395 [1] BUSHING  
  [1] ADAPTER-HYDRAULIC PUMP  
4. 0S-1594 [1] BOLT (3/8-16X1-IN)  
5. 5F-3106 [1] SEAL-O-RING  
6. 1A-2029 [6] BOLT (3/8-16X1.125-IN)  
7. 0S-1595 [3] BOLT (1/2-13X1.25-IN)  
8. 9M-2417 [1] RETAINER-GEAR  
9. 4W-9989 [1] GEAR AS (56-TEETH)  
  9M-2418 [1] BUSHING  
10. 4W-9771 [1] GEAR-CRANKSHAFT (57-TEETH)  
11. 0S-1621 [4] BOLT (1/2-13X1-IN)  
 

#SEBP25780019
 

2P-7831: DRIVE GP-FAN

2P-7831 DRIVE GP-FAN
S/N 8TD10430-99999; 3SR108-UP
PART OF 125-6715 ENGINE AR, 125-6718 INSTALLATION AR-ENGINE
i00356365 SEBP2578
2P7831 DRIVE GP-FAN Parts scheme
  For full view, you need register

Parts for your D6G SR TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1P-9945 [1] BRACKET AS-FAN  
2. 3B-8485 [1] ELBOW  
3. 5S-9062 [1] SPACER (35.032X50.8X15.88-MM THK)  
4. 8H-9789 [1] BALL BEARING  
5. 8N-5305 C [1] SPACER (35.6X47.62X43.74-MM THK)  
6. 2P-1757 [1] HUB-FAN PULLEY  
7. 5S-7264 [1] WASHER-RETAINING (0.219-IN THK)  
8. 6V-4626 C [2] BOLT-LOCKING (5/16-24X2-IN)  
9. 3L-1425 [1] BALL BEARING  
10. 5S-2106 [1] SEAL-LIP TYPE  
11. 5P-2566 C [4] BOLT (1/2-13X1.5-IN)  
  C   CHANGE FROM PREVIOUS TYPE
 

Information:

Truck Engine News
Set Engine Valve Lash After Installing All Remanufactured Long Blocks {1102, 1121, 1123, 1209}
2012/10/08
Engine News
Set Engine Valve Lash After Installing All Remanufactured Long Blocks {1102, 1121, 1123, 1209}
2012/10/08
Operation and Maintenance Manual
Engine Valve Rotators - Inspect
D6F SR, D6G and D6G SR Track-Type Tractors
Engine Valve Lash - Check
D6F SR, D6G and D6G SR Track-Type Tractors
Special Instruction
Replacement For The 2M4314 Fuel Pump Bonnet Retaining Bushing{1250}
Replacement For The 2M4314 Fuel Pump Bonnet Retaining Bushing{1250}
Use Of The 1P7451 Valve Guide Honing Group{0673, 1104}
Use Of The 1P7451 Valve Guide Honing Group{0673, 1104}
Installing Heli-Coil Inserts In Caterpillar Cylinder Heads{1117}
Installing Heli-Coil Inserts In Caterpillar Cylinder Heads{1117}
Use Of 6V4805 Valve Seat Insert Puller Group{0703}
Use Of 6V4805 Valve Seat Insert Puller Group{0703}
Repair Of Precombustion Chamber And Direct Injection Adapter Seating Surfaces{1101}
Repair Of Precombustion Chamber And Direct Injection Adapter Seating Surfaces{1101}
Use Of 6V9050 Exhaust Stud Removal Group{1100}
Use Of 6V9050 Exhaust Stud Removal Group{1100}
Service Letter-NACD
Cylinder Head Gasket And Spacer Deck Gasket Replacement In Various Gasket Kits
Cylinder Head Gasket And Spacer Deck Gasket Replacement In Various Gasket Kits
Service Letter-Australia
Service Letter-CFEL
Service Letter-CSARL
Service Letter-Americas
Service Letter-Brazil
Service Letter-Truck/Ag/Marine
Specifications
Valve Rocker Arms And Lifters
3304 & 3306 VEHICULAR ENGINES
Valves
3304 & 3306 VEHICULAR ENGINES
Valve Cover
3304 & 3306 VEHICULAR ENGINES
Valve Mechanism Cover
3306C Engines for Caterpillar Built Machines
Valve Rocker Arms and Lifters
3306C Engines for Caterpillar Built Machines
Tool Operating Manual
9U-5132 Timing and Fuel System Setting Tool Group{1105, 1162, 1290, 1905}
9U-5132 Timing and Fuel System Setting Tool Group{1105, 1162, 1290, 1905}
Operating Instructions for 155-1536 Valve Recession Tool Kit for all G3500 and 3500 Engines{0374, 0599, 0701, 0703, 0759, 0767}
Operating Instructions for 155-1536 Valve Recession Tool Kit for all G3500 and 3500 Engines{0374, 0599, 0701, 0703, 0759, 0767}
Operating Instructions for 148-2997 Valve Recession Tool Group Used On 3600, G3600, and C175 Engines{0374, 0599, 0701, 0703, 0759}
Operating Instructions for 148-2997 Valve Recession Tool Group Used On 3600, G3600, and C175 Engines{0374, 0599, 0701, 0703, 0759}
CRB Valve Spring Testers 8S-2263 and 4C-9496{0374, 0599, 0700, 0701, 1108}
CRB Valve Spring Testers 8S-2263 and 4C-9496{0374, 0599, 0700, 0701, 1108}
Service Letter-China
Cylinder Head Gasket And Spacer Deck Gasket Replacement In Various Gasket Kits
Cylinder Head Gasket And Spacer Deck Gasket Replacement In Various Gasket Kits
Service Letter-Asia
Reuse And Salvage Guidelines
Reuse & Salvage for Valvetrain Components {1102, 1108, 1109, 1121, 1123}
Reuse & Salvage for Valvetrain Components {1102, 1108, 1109, 1121, 1123}
9U-5132 Timing and Fuel System Setting Tool Group{1105, 1162, 1290, 1905}
9U-5132 Timing and Fuel System Setting Tool Group{1105, 1162, 1290, 1905}
Service Letter-APD
Cylinder Head Gasket And Spacer Deck Gasket Replacement In Various Gasket Kits
Cylinder Head Gasket And Spacer Deck Gasket Replacement In Various Gasket Kits
Testing and Adjusting
Finding Top Center Position for No. 1 Piston
3306C Engines for Caterpillar Built Machines
Engine Valve Lash - Inspect/Adjust
3306C Engines for Caterpillar Built Machines
Disassembly and Assembly
Rocker Shaft And Push Rods (3304)
3304 & 3306 VEHICULAR ENGINE
Rocker Shaft And Push Rods (3306)
3304 & 3306 VEHICULAR ENGINE
Rocker Shaft
3304 & 3306 VEHICULAR ENGINE
Valve Lifters
3304 & 3306 VEHICULAR ENGINE
Valve Cover (3306)
3304 & 3306 VEHICULAR ENGINE
Valve Cover (3304)
3304 & 3306 VEHICULAR ENGINE
Compression Brake - Remove
3304B and 3306B Engines for Caterpillar Built Machines
Compression Brake - Install
3304B and 3306B Engines for Caterpillar Built Machines
Compression Brake - Disassemble
3304B and 3306B Engines for Caterpillar Built Machines
Compression Brake - Assemble
3304B and 3306B Engines for Caterpillar Built Machines
Rocker Shaft and Pushrod - Remove
3304B and 3306B Engines for Caterpillar Built Machines
Rocker Shaft - Disassemble
3304B and 3306B Engines for Caterpillar Built Machines
Rocker Shaft - Assemble
3304B and 3306B Engines for Caterpillar Built Machines
Lifter Group - Remove and Install
3304B and 3306B Engines for Caterpillar Built Machines
Rocker Shaft and Pushrod - Install
3304B and 3306B Engines for Caterpillar Built Machines
Valve Mechanism Cover - Remove and Install
3304B and 3306B Engines for Caterpillar Built Machines
Service Magazine
Engine Valve Stem "Use Again" Specifications{0653,1105}
1983/02/28
Valve Damage Can Be Caused By Short Intervals Of Engine Operation In Very Cold Temperatures{1105,1208}
1983/10/17
Remanufactured Cylinder Head Groups{1100,1101,7554}
1984/11/19
Valve Lash Adjustment Not A Warranty Item {1102,1105}
1985/01/14
Valve Lash Adjustment Interval Is Changed {1105}
1986/07/07
Correct Installation Of Valve Lifters On The Camshaft Is Very Important To Prevent Failures{1209}
1977/05/16
Tools Now Available To Ream And/Or Hone 0.500" (12.70 mm) Diameter Valve Guides{0663}
1977/08/22
Larger Diameter Holes Are Now Used In The Rocker Arm Shaft To Give More Oil Flow To Rocker Arm Bearings{1102}
1977/11/21
Tolerance Added To Valve Clearance Specifications{1105,0374}
1978/01/16
Valve Damage Can Be Caused By Short Intervals Of Engine Operation In Very Cold Temperatures{1105,1208}
1978/01/30
Use Again Specifications For Valve Springs Are Changed{1108}
1978/03/06
Silicone Water Passage Seal Can Be Used Where Contact With Oil Is Unavoidable During Assembly Of Cylinder Heads{1100}
1988/06/06
A New Method To Clean And Polish Engine Valve Stems{0674,1105}
1979/05/28
Improved Engine Design Uses Cylinder Block With Spacer Plate And New Crankshaft Thrust Plates{1000}
1979/07/02
Why Engines Are Damaged By Fuel Sulfur{1104,1216,1280,1318,1215}
1979/08/27
Fuel Sulfur-Your Diesel's Silent Enemy{0375,1280}
1979/12/17
New Exhaust Valves Are Used In Caterpillar Remanufactured Cylinder Heads{1105,1101}
1990/10/08
7S3161 Valve Lifter Has Three Different Designs{1209}
1991/10/14
Correction For Camshaft And Valve Seat Specifications{1210,1103}
1992/07/20
New Valve Cover Seal Used {1107}
1998/05/25
New Tools Are Available To Help Find The Top Center Position For No. 1 Piston {1105}
2001/04/23
Set Engine Valve Lash After Installing All Remanufactured Long Blocks {1102, 1121, 1123, 1209}
2012/10/08

Caterpillar Parts SIS Catalog D6G SR :

COVER GP-FRONT HOUSING
2P-6528 COVER GP-FRONT HOUSING
COVER GP-CYLINDER HEAD
2P-6531 COVER GP-CYLINDER HEAD
COVER GP-CYLINDER BLOCK
8N-3163 COVER GP-CYLINDER BLOCK
CAMSHAFT GP
1N-4406 CAMSHAFT GP
125-6718 INSTALLATION AR-ENGINE
151-5310 ENGINE AR
125-6715 ENGINE AR
125-7871 GENERAL AR
CRANKSHAFT GP
2Y-5206 CRANKSHAFT GP
CYLINDER BLOCK GP
1N-3576 CYLINDER BLOCK GP
CYLINDER BLOCK GP
7N-6550 CYLINDER BLOCK GP
CYLINDER BLOCK GP
8N-5286 CYLINDER BLOCK GP
CYLINDER HEAD GP
8N-0246 CYLINDER HEAD GP
CYLINDER HEAD GP
8N-6796 CYLINDER HEAD GP
DAMPER GP
1W-7733 DAMPER GP
DRIVE GP-ACCESSORY
126-0600 DRIVE GP-ACCESSORY

Truck sale:

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.