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CYLINDER BLOCK AND COVERS (7S4098 N/S)--Side View--Part 1 of 3 Serial No. 10R1555, 10R1556 and 10R1563 to 10R2277 inclusive and 22R1 to 22R949 inclusive 5S6778 Cylinder Block parts are shown on Page 23. See Page 25 for Gasket Kits. Note: 8S4635 Piston & Liner Group, consisting of: 1--Piston Assembly, 1--Liner & 2--Seal, is available 120




BASIC ENGINE

CYLINDER BLOCK GP
 

#UEG0231S0020
 

7S-4098: CYLINDER BLOCK AND COVERS

CYLINDER BLOCK AND COVERS (7S4098 N/S)--Side View--Part 1 of 3
Serial No. 10R1555, 10R1556 and 10R1563 to 10R2277 inclusive and 22R1 to 22R949 inclusive
5S6778 Cylinder Block parts are shown on Page 23. See Page 25 for Gasket Kits. Note: 8S4635
Piston & Liner Group, consisting of: 1--Piston Assembly, 1--Liner & 2--Seal, is available
c109480 UEG0231S
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Parts for your 120 MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5M-6213 [6] PLUG  
2. 9H-5921 [1] GASKET  
3. 9S-6557 [6] LINER  
4. 5S-6670 [12] SEAL  
5. 0S-1594 [2] BOLT  
6. 3B-4506 [29] LOCKWASHER  
7. 4M-6480 [1] GASKET  
8. 1M-0130 [1] COVER  
9. 8M-9307 [1] PLUG  
  6F-7062 [1] GASKET  
10. 5B-8030 [1] SPACER  
11. 5S-6778 YC [1] BLOCK ASSEM.  
    (See Separate Illustration)
12. 5S-7135 [1] GASKET  
13. 9H-6067 [2] SEAL  
14. 0S-1588 [20] BOLT  
15. 8S-8206 [1] PAN ASSEM.  
16. 8S-1965 [1] GASKET  
17. 4B-2363 [1] PLUG  
  6F-4868 [1] GASKET  
18. 1A-2029 [7] BOLT  
19. 9H-2713 [1] GASKET  
20. 1D-4538 [2] BOLT  
21. 5M-6560 [1] LOCK  
22. 5S-3949 [1] TUBE ASSEM.  
23. 1A-9579 [1] BOLT  
24. 2A-5328 [2] LOCK  
25. 2B-2694 [1] BOLT  
26. 1S-7107 [1] GASKET  
27. 5S-3951 [1] TUBE ASSEM.  
  C   INDICATES CHANGE FROM PREVIOUS
  Y   SEPARATE ILLUSTRATION
 

#UEG0231S0021
 

7S-4098: CYLINDER BLOCK AND COVERS

CYLINDER BLOCK AND COVERS (7S4098 N/S)--Side View--Part 2 of 3
Serial No. 10R1555, 10R1556 and 10R1563 to 10R2277 inclusive and 22R1 to 22R949 inclusive
c109481 UEG0231S
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Parts for your 120 MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-1683 [1] HOUSING (Flywheel)  
2. 2A-3798 [2] DOWEL  
3. 4B-3938 [1] PLUG  
4. 8M-3023 C [6] ORIFICE  
5. 5M-9136 [1] LOCK  
6. 1A-1460 [13] BOLT  
7. 5M-9132 [1] LOCK  
8. 5M-9135 [1] LOCK  
9. 5M-9134 [1] LOCK  
10. 5M-9131 [1] LOCK  
11. 9S-2273 [1] PLATE ASSEM.  
  5S-7190 [1] STUD  
    (Part of 9S2273 Assem.)
12. 0S-1594 [8] BOLT  
13. 3B-4506 [38] LOCKWASHER  
14. 5S-7134 [1] GASKET  
15. 4M-2969 [1] GASKET  
16. 8S-1961 [1] PLATE ASSEM.  
17. 0L-1351 [26] BOLT  
18. 9S-1799 [1] COVER  
  8S-0877 [1] GASKET  
19. 0S-1571 [3] BOLT  
20. 5H-4212 [1] PLUG  
21. 0T-0573 [1] BOLT  
22. 7M-7390 [1] COVER ASSEM.  
23. 5H-4211 [1] BUSHING  
    (Part of 7M7390 Assem.)
24. 1S-4385 [1] SCREEN ASSEM.  
25. 1S-4382 [2] GASKET  
26. 3B-8998 [2] FITTING  
  1F-1344 [2] NUT  
    (Part of 3B8998 Fitting)
27. 9S-1759 [1] TUBE  
  C   INDICATES CHANGE FROM PREVIOUS
 

#UEG0231S0022
 

7S-4098: CYLINDER BLOCK AND COVERS

CYLINDER BLOCK AND COVERS (7S4098 N/S)--End View--Part 3 of 3
Serial No. 10R1555, 10R1556 and 10R1563 to 10R2277 inclusive and
22R1 to 22R949 inclusive. Refer also to Page 119 for special parts
c135434 UEG0231S
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Parts for your 120 MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-1234 [1] BUSHING ASSEM.  
2. 0L-1143 [9] BOLT  
3. 3B-4506 [22] LOCKWASHER  
4. 0S-1594 [8] BOLT  
5. 9S-3187 [1] LOCK  
6. 1B-4203 [6] NUT  
7. 9S-8991 [1] COVER ASSEM.  
8. 8S-6814 [2] DOWEL  
9. 3B-2460 [1] STUD  
10. 0T-0101 [4] STUD  
    (Parts of 9S8991 Cover Assem.)
11. 9H-4891 [1] GASKET  
12. 2N-2753 [1] COVER  
13. 1C-2251 [2] BOLT  
14. 5S-8055 [1] GASKET  
15. 1A-2029 [4] BOLT  
16. 1P-2698 [1] PIPE  
17. 7S-1803 [1] CAP ASSEM.  
  7S-1801 [1] ANCHOR  
18. 8S-3995 [1] GAUGE ASSEM.  
  9S-1796 [1] TUBE ASSEM.  
19. 9S-3188 [1] LOCK  
20. 4M-4419 [1] LOCK  
21. 0S-1595 [4] BOLT  
  3B-4508 [4] LOCKWASHER  
22. 5S-3096 [1] SUPPORT ASSEM.  
23. 8S-1326 [1] FITTING  
24. 1L-3661 [1] CLAMP  
25. 7M-7388 [1] PIPE (Drain)  
26. 0S-0509 [1] BOLT  
  1D-4717 [1] NUT  
27. 7M-7602 [1] BRACKET  
 

#UEG0231S0023
 

7S-4098: CYLINDER BLOCK AND COVERS

CYLINDER BLOCK AND COVERS (7S4098 N/S)--Side View--Part 1 of 3
Serial No. 10R2278-Up and 22R950-Up
2P8776 Cylinder Block parts are shown on Page 22G. See Page 25 for Gasket Kits
c140123 UEG0231S
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Parts for your 120 MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5M-6213 [6] PLUG  
2. 9H-5921 [1] GASKET  
3. 2P-8889 C [6] LINER  
4. 5S-6670 C [18] SEAL  
5. 0S-1594 [2] BOLT  
6. 3B-4506 [29] LOCKWASHER  
7. 4M-6480 [1] GASKET  
8. 1M-0130 [1] COVER  
9. 8M-9307 [1] PLUG  
  6F-7062 [1] GASKET  
10. 5B-8030 [1] SPACER  
11. 2P-8776 YC [1] BLOCK ASSEM.  
    (Separate Illustration)
12. 5S-7135 [1] GASKET  
13. 9H-6067 [2] SEAL  
14. 0S-1588 [20] BOLT  
15. 8S-8206 [1] PAN ASSEM.  
16. 8S-1965 [1] GASKET  
17. 4B-2363 [1] PLUG  
  6F-4868 [1] GASKET  
18. 1A-2029 [7] BOLT  
19. 9H-2713 [1] GASKET  
20. 1D-4538 [2] BOLT  
21. 5M-6560 [1] LOCK  
22. 5S-3949 [1] TUBE ASSEM.  
23. 1A-9579 [1] BOLT  
24. 2A-5328 [2] LOCK  
25. 2B-2694 [1] BOLT  
26. 1S-7107 [1] GASKET  
27. 5S-3951 [1] TUBE ASSEM.  
28. 5M-6214 C [1] PLUG  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEG0231S0024
 

7S-4098: CYLINDER BLOCK AND COVERS

CYLINDER BLOCK AND COVERS (7S4098 N/S)--Side View--Part 2 of 3
Serial No. 10R2278-Up and 22R950-Up
c140124 UEG0231S
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Parts for your 120 MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-1683 [1] HOUSING (Flywheel)  
2. 2A-3798 [2] DOWEL  
3. 4B-3938 [1] PLUG  
4. 8M-3023 [6] ORIFICE  
5. 5M-9136 [1] LOCK  
6. 1A-1460 [13] BOLT  
7. 5M-9132 [1] LOCK  
8. 5M-9135 [1] LOCK  
9. 5M-9134 [1] LOCK  
10. 5M-9131 [1] LOCK  
11. 9S-2273 [1] PLATE ASSEM.  
  5S-7190 [1] STUD  
12. 0S-1594 [8] BOLT  
13. 3B-4506 [38] LOCKWASHER  
14. 5S-7134 [1] GASKET  
15. 4M-2969 [1] GASKET  
16. 8S-1961 [1] PLATE ASSEM.  
17. 0L-1351 [26] BOLT  
18. 9S-1799 [1] COVER  
  8S-0877 [1] GASKET  
19. 0S-1571 [3] BOLT  
20. 5H-4212 [1] PLUG  
21. 0T-0573 [1] BOLT  
22. 7M-7390 [1] COVER ASSEM.  
23. 5H-4211 [1] BUSHING  
24. 1S-4385 [1] SCREEN ASSEM.  
25. 1S-4382 [2] GASKET  
26. 3B-8998 [2] FITTING  
  1F-1344 [2] NUT  
27. 9S-1759 [1] TUBE  
 

#UEG0231S0025
 

7S-4098: CYLINDER BLOCK AND COVERS

CYLINDER BLOCK AND COVERS (7S4098 N/S)--End View--Part 3 of 3
Serial No. 10R2278-Up and 22R950-Up
Refer also to Page 119 for special parts
c140125 UEG0231S
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Parts for your 120 MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-1234 [1] BUSHING ASSEM.  
2. 0L-1143 [9] BOLT  
3. 3B-4506 C [19] LOCKWASHER  
4. 0S-1594 [8] BOLT  
5. 9S-3187 [1] LOCK  
6. 1B-4203 [6] NUT  
7. 9S-8991 [1] COVER ASSEM.  
8. 8S-6814 [2] DOWEL  
9. 3B-2460 [1] STUD  
10. 0T-0101 [4] STUD  
11. 9H-4891 [1] GASKET  
12. 2N-2753 [1] COVER  
13. 1C-2251 [2] BOLT  
14. 5S-8055 [1] GASKET  
15. 1A-2029 [4] BOLT  
16. 1P-2698 [1] PIPE  
17. 7S-1803 [1] CAP ASSEM.  
  7S-1801 [1] ANCHOR  
18. 8S-3995 [1] GAUGE ASSEM.  
  9S-1796 [1] TUBE ASSEM.  
19. 9S-3188 [1] LOCK  
20. 4M-4419 [1] LOCK  
21. 0S-1595 [4] BOLT  
  3B-4508 [4] LOCKWASHER  
22. 5S-3096 [1] SUPPORT ASSEM.  
23. 8S-1326 [1] FITTING  
24. 1L-3661 [1] CLAMP  
25. 7M-7388 [1] PIPE (Drain)  
26. 0S-0509 [1] BOLT  
  1D-4717 [1] NUT  
27. 7M-7602 [1] BRACKET  
28. 4B-4278 C [3] WASHER  
  C   INDICATES CHANGE
 

#UEG0231S0026
 

2P-8776: CYLINDER BLOCK AS

2P8776 CYLINDER BLOCK ASSEMBLY
Serial No. 10R2278-Up and 22R950-Up
Part of Cylinder Block and Covers shown on Page 22D
Note: For Field Replacement order 2P8776 Block plus 1--2P8782 Hardware Kit
c114554 UEG0231S
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Parts for your 120 MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7M-4046 [4] BEARING  
2. 5M-6213 [1] PLUG  
3. 8B-1312 [2] DOWEL  
4. 4B-5387 [2] PLUG  
5. 1H-0974 [1] DOWEL  
6. 5B-7652 [2] DOWEL  
7. 8S-0835 [1] DOWEL  
8. 3S-8313 [2] PLUG  
9. 8B-6349 [2] DOWEL  
10. 5S-8462 [1] STUD  
11. 9M-5477 [1] BEARING  
12. 4B-9782 [1] BALL  
13. 7S-3224 [14] BOLT  
  2S-5658 [14] WASHER  
14. 1P-2717 [7] BEARING CAP  
 

#UEG0231S0027
 

5S-6778: CYLINDER BLOCK ASSEMBLY

5S6778 CYLINDER BLOCK ASSEMBLY
Serial No. 10R1 to 10R2277 inclusive and 22R1 to 22R949 inclusive
Part of Cylinder Block and Covers shown on Page 22A
Note: For Field Replacement order 5S6778 Block Assembly plus 1--9S5603 Hardware Kit
c112398 UEG0231S
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Parts for your 120 MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7M-4046 [ 4] BEARING  
2. 5M-6213 [ 1] PLUG  
3. 8B-1312 [ 2] DOWEL  
4. 4B-5387 [ 2] PLUG  
5. 1H-0974 [ 1] DOWEL  
6. 5B-7652 [ 2] DOWEL  
7. 8S-0835 [ 1] DOWEL  
8. 3S-8313 [ 2] PLUG  
9. 8B-6349 [ 2] DOWEL  
10. 5S-8462 [ 1] STUD  
11. 9M-5477 [ 1] BEARING  
12. 4B-9782 [ 1] BALL  
13. 7S-3224 [ 14] BOLT  
  2S-5658 [ 14] WASHER  
14. 8S-4676 [ 7] BEARING CAP GROUP  
  8S-4674 [ 2] SHIM (long)  
  8S-4673 [ 6] SHIM (short)  
    -OR-
  1P-2717 [ 7] BEARING CAP  
 

#UEG0231S0028
 

1P-1394: CRANKSHAFT

CRANKSHAFT (1P1394 N/S)
c145671 UEG0231S
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Parts for your 120 MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2P-0716 [2] PLATE  
2. 5S-5871 [1] CRANKSHAFT ASSEM.  
3. 9F-2247 [6] PLUG  
4. 5H-2671 [1] KEY  
5. 4M-9933 [1] GEAR (40 Teeth)  
    (Parts of 5S5871 Crankshaft Assem.)
6. 3S-9730 [7] BEARING  
7. 5S-9021 [1] SEAL  
8. 0S-1595 [6] BOLT  
9. 3B-4508 [6] LOCKWASHER  
10. 2P-9584 [1] DAMPER ASSEM.  
11. 5S-8168 [1] PULLEY  
12. 6B-5310 [1] BOLT  
13. 5S-9948 [1] WASHER  
 

#UEG0231S0029
 

CRANKSHAFT BEARING REPLACEMENT GROUPS

CRANKSHAFT BEARING REPLACEMENT GROUPS
UEG0231S0029 UEG0231S
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Parts for your 120 MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
 

Information:

Special Instruction
Using Caterpillar Cylinder Pack Pulling Tools{1239}
Using Caterpillar Cylinder Pack Pulling Tools{1239}
Pressure Lubrication Procedure for Remanufactured Engines and Short Blocks{1000, 1200, 1020}
Pressure Lubrication Procedure for Remanufactured Engines and Short Blocks{1000, 1200, 1020}
3306 Cylinder Head To Block Joint Repair Procedure{1124, 1101, 1201}
3306 Cylinder Head To Block Joint Repair Procedure{1124, 1101, 1201}
Use Of 5P8709 Tool Group For Alignment Of Piston Cooling Jets{1331}
Use Of 5P8709 Tool Group For Alignment Of Piston Cooling Jets{1331}
Installation Of 8N628 Service Replacement Bearing For Rear Of Injection Pump Camshaft In Sleeve Metering Fuel Injection Pump Housing{1253}
Installation Of 8N628 Service Replacement Bearing For Rear Of Injection Pump Camshaft In Sleeve Metering Fuel Injection Pump Housing{1253}
Installation Of 1N3574 Or 1N3576 Cylinder Block Service Group (Spacer Plate) As A Replacement For The Former Counterbored Cylinder Block{1201}
Installation Of 1N3574 Or 1N3576 Cylinder Block Service Group (Spacer Plate) As A Replacement For The Former Counterbored Cylinder Block{1201}
Installation Of Crankshaft Seals And Wear Sleeves{1203}
Installation Of Crankshaft Seals And Wear Sleeves{1203}
Use Of 1P4000 Line Boring Tool Group{0672, 1201, 1203}
Use Of 1P4000 Line Boring Tool Group{0672, 1201, 1203}
Installing Heli-Coil Inserts In Caterpillar Cylinder Heads{1117}
Installing Heli-Coil Inserts In Caterpillar Cylinder Heads{1117}
Pressure Lubrication Procedure For Remanufactured Engines And Short Blocks{1000, 1201}
Pressure Lubrication Procedure For Remanufactured Engines And Short Blocks{1000, 1201}
Use Of 8T0455 Cylinder Liner Projection Indicator Group{0760, 1216}
Use Of 8T0455 Cylinder Liner Projection Indicator Group{0760, 1216}
Cylinder Block Cleaning Procedure{1201}
Cylinder Block Cleaning Procedure{1201}
Installation Of 0R2554 Remanufactured Short Block Group{1200}
Installation Of 0R2554 Remanufactured Short Block Group{1200}
Using 5P4175 Boring Tool Group And 5P1618 Tool Arrangement{0672, 1200}
Using 5P4175 Boring Tool Group And 5P1618 Tool Arrangement{0672, 1200}
Reuse and Salvage for Cast Iron Cylinder Blocks {1201, 1201}
Reuse and Salvage for Cast Iron Cylinder Blocks {1201, 1201}
Using the <NOBR> 6V-7840</NOBR> Deck Checking Tool Assembly {0701, 1201, 7225}
Using the 6V-7840 Deck Checking Tool Assembly {0701, 1201, 7225}
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
Cylinder Block
3306 VEHICULAR ENGINE
Cylinder Liner
3306 VEHICULAR ENGINE
Cylinder Liner Projection
3306 VEHICULAR ENGINE
Tool Operating Manual
9U7990 Counter Bore Tool Group for 3176, 3300 and 3400 Series Engines{1201}
9U7990 Counter Bore Tool Group for 3176, 3300 and 3400 Series Engines{1201}
Setup and Operation of the 368-8645 Tool Kit (CRANKCASE PRESSURE){1317}
Setup and Operation of the 368-8645 Tool Kit (CRANKCASE PRESSURE){1317}
Using the 8T-2700 Blowby/Air Flow Indicator{0781, 0785, 1317}
Using the 8T-2700 Blowby/Air Flow Indicator{0781, 0785, 1317}
420-7630 Main Bearing Cap Lifting Device{0599, 0629, 0632, 0701, 1201, 1203, 1230}
420-7630 Main Bearing Cap Lifting Device{0599, 0629, 0632, 0701, 1201, 1203, 1230}
Using the 242-3980 Piston Groove Gauge on 3500A and B Engines with Monotherm Pistons using the 329-2630 and 329-2631 Piston Groove Gauges on 3500B Engines with Monotherm Pistons{0374, 0599, 0700, 0701, 0705}
Using the 242-3980 Piston Groove Gauge on 3500A and B Engines with Monotherm Pistons using the 329-2630 and 329-2631 Piston Groove Gauges on 3500B Engines with Monotherm Pistons{0374, 0599, 0700, 0701, 0705}
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 and Salvage for Cast Iron Cylinder Blocks {1201, 1201}
Reuse and Salvage for Cast Iron Cylinder Blocks {1201, 1201}
Reuse and Salvage for 3176, 3300, 3400 & C-Series Engine Cylinder Blocks {0670, 0672, 0761, 1201, 7225}
Reuse and Salvage for 3176, 3300, 3400 & C-Series Engine Cylinder Blocks {0670, 0672, 0761, 1201, 7225}
Inspection and Reconditioning Procedures of Main Bearing Bores in Cylinder Blocks {1201, 1202, 1224, 1224}
Inspection and Reconditioning Procedures of Main Bearing Bores in Cylinder Blocks {1201, 1202, 1224, 1224}
Inspection and Reuse Guideline of Cylinder Liners in Cat Engines {0761, 1201, 1213, 1216, 1216}
Inspection and Reuse Guideline of Cylinder Liners in Cat Engines {0761, 1201, 1213, 1216, 1216}
Using the <NOBR> 6V-7840</NOBR> Deck Checking Tool Assembly {0701, 1201, 7225}
Using the 6V-7840 Deck Checking Tool Assembly {0701, 1201, 7225}
Cylinder Block Salvage Procedure Using Belzona&reg; 1311 (Ceramic R Metal) {0700, 0701, 1000, 1201}
Cylinder Block Salvage Procedure Using Belzona® 1311 (Ceramic R Metal) {0700, 0701, 1000, 1201}
Cylinder Block Cleaning and Audit Procedure {0644, 0680, 0701}
Cylinder Block Cleaning and Audit Procedure {0644, 0680, 0701}
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
Disassembly and Assembly
Crankshaft Main Bearings
NO. 120 & NO. 140 ENGINE
Cylinder Liners
NO. 120 & NO. 140 ENGINE
Camshaft Bearings
NO. 120 & NO. 140 ENGINE
Service Magazine

Caterpillar Parts SIS Catalog 120 :

Truck sale:

250,000 
Caterpillar 120 LVR, motor graders, Construction
- motor graders
RING POWER CORP.
250,000 
Caterpillar 120 LVR, motor graders, Construction
- motor graders
RING POWER CORP.
278,720 
Caterpillar 120, motor graders, Construction
- motor graders
FINANZAUTO S.A.
250,000 
Caterpillar 120 LVR, motor graders, Construction
- motor graders
RING POWER CORP.
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