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CYLINDER HEAD (4N749 N/S) Part of 4N2260 Cylinder Head Group shown on Page 23 3406 MARINE ENGINE


BASIC ENGINE
CYLINDER HEAD GP
SERVICE EQUIPMENT AND SUPPLIES
GASKET & SEAL KITS
BASIC ENGINE
VALVE MECHANISM GP
LIFTING GP-ENGINE
GEAR GP
HOUSING GP-FRONT


BASIC ENGINE

CYLINDER HEAD GP
 

#UEG0747S0020
 

4N-0749: CYLINDER HEAD

CYLINDER HEAD (4N749 N/S)
Part of 4N2260 Cylinder Head Group shown on Page 23
c150840 UEG0747S
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Parts for your 3406 MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4N-5906 [24] SPRING  
2. 2N-5571 C [24] ROTOCOIL  
3. 2A-4429 [48] LOCK  
4. 4N-5079 [1] HEAD ASSEM.  
5. 2N-5775 [12] DOWEL  
6. 4N-5893 [12] INSERT  
  4S-8898 H [12] INSERT .005 in. (.13mm)oversize  
  4S-8899 H [12] INSERT .010 in. (.26mm)oversize  
7. 2M-6471 [1] PLUG  
8. 9S-9699 [12] INSERT  
  4S-8902 H [12] INSERT .005 in. (.13mm)oversize  
  4S-8903 H [12] INSERT .010 in. (.26mm)oversize  
9. 3B-0623 [10] PLUG  
10. 4N-2803 [24] GUIDE  
11. 3B-0645 [12] PLUG  
12. 4N-5654 [12] VALVE (intake)  
13. 4N-5653 [12] VALVE (exhaust)  
  C   INDICATES CHANGE
  H   NOT PART OF 4N5079 ASSEM.
 

#UEG0747S0021
 

7N-0628: GASKET GROUP

7N628 GASKET GROUP--Field Installation
Eliminates Oil Transfer from Rocker Arm Oil Supply Holes to Water Jacket Areas
Note: 7N624 Block Plate is available
UEG0747S0021 UEG0747S
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Parts for your 3406 MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  7N-0623 [6] SEAL CYLINDER LINER  
  7N-0631 [1] GASKET CYLINDER BLOCK PLATE  
  7N-0632 [1] GASKET CYLINDER BLOCK TO CYLINDER HEAD  
 

#UEG0747S0022
 

4N-2271: VALVE MECHANISM GP

4N2271 VALVE MECHANISM GROUP
c208835 UEG0747S
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Parts for your 3406 MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4N-1045 CY [2] ROCKER ARM GROUP  
    (Separate Illustration)
2. 4N-5611 C [6] BRIDGE ASSEM. (exhaust)  
    (Each Includes)
3. 2N-5842 [1] SCREW  
  9L-7712 [1] NUT  
4. 2P-9845 [6] BOLT  
  5H-1504 [6] WASHER  
5. 4N-5609 [12] ROD  
6. 6N-6872 C [12] SPRING  
7. 6N-4589 RC [12] LIFTER ASSEM.  
8. 4N-5612 C [6] BRIDGE ASSEM. (intake)  
    (Each Includes)
9. 2N-5842 [1] SCREW  
  9L-7712 [1] NUT  
  R   REMFG PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
  C   INDICATES CHANGE
 

#UEG0747S0023
 

4N-1045: ROCKER ARM GP

4N1045 ROCKER ARM GROUP
Part of 4N2271 Valve Mechanism Group
c214020 UEG0747S
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Parts for your 3406 MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 006-7403 [1] RETAINER  
2. 2N-7228 [4] WASHER  
3. 4N-0955 [2] PIN  
4. 2N-7229 [2] SPRING  
5. 4N-0839 [1] SHAFT ASSEM.  
6. 5B-1866 [2] PLUG  
7. 4N-0833 [3] BRACKET  
8. 4N-5614 [6] ARM ASSEM.  
9. 9L-7712 [6] NUT  
10. 1A-2935 [6] SCREW  
 

#UEG0747S0024
 

4N-2272: COVER GP-VALVE MECHANISM

4N2272 VALVE MECHANISM COVER GROUP
c218393 UEG0747S
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Parts for your 3406 MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9L-8925 C [26] BOLT  
2. 4N-4536 [1] COVER-ROCKER ARM  
3. 5P-3218 BC SEAL 5.79M(228IN)  
4. 4N-4537 [1] COVER-ROCKER ARM  
5. 4N-4535 [2] BASE-ARM COVER  
6. 6N-2985 C [1] CAP AS-FILLER  
7. 4N-0851 [2] ADAPTER  
8. 2H-3755 [1] BOLT  
  9M-1974 C [1] WASHER  
  B   USE AS REQUIRED
  C   CHANGE FROM PREVIOUS TYPE
 

#UEG0747S0025
 

4N-1331: LIFTING GP

4N1331 LIFTING EYE GROUP
c149051 UEG0747S
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Parts for your 3406 MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4N-4308 [1] EYE-LIFTING (FRONT)  
2. 4N-5186 [1] EYE-LIFTING (REAR)  
3. 0S-1594 C [8] BOLT  
4. 0S-1595 C [4] BOLT  
5. 2M-0849 C [4] WASHER  
6. 5M-2894 C [8] WASHER  
  C   CHANGE FROM PREVIOUS TYPE
 

#UEG0747S0026
 

4N-3911: HOUSING GP-FRONT

4N3911 FRONT HOUSING GROUP
Serial No. 91U95-Up
c218405 UEG0747S
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Parts for your 3406 MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0T-0055 C [2] BOLT  
2. 0L-1352 C [3] BOLT  
3. 4N-3916 [1] GASKET  
4. 0S-1594 C [7] BOLT  
5. 4N-3914 [1] PLATE  
6. 6N-0389 [1] STUD  
  4H-6145 [1] GASKET  
7. 1A-2029 C [4] BOLT  
8. 4N-0867 [1] GASKET  
9. 1D-4717 C [1] NUT  
10. 4N-3913 [1] HOUSING ASSEM.  
11. 5M-6214 [1] PLUG  
12. 6F-7012 C [10] STUD  
13. 8S-9191 C [1] BOLT  
14. 5M-2894 C [18] WASHER  
  C   INDICATES CHANGE
 

#UEG0747S0027
 

4N-3911: HOUSING GP-FRONT

4N3911 FRONT HOUSING GROUP
Serial No. 91U1 to 91U94 inclusive. Part of 4N2239 Basic Engine Arrangement
listed on Page 12. Only separate parts serviced
c147182 UEG0747S
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Parts for your 3406 MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2P-3212 [3] BOLT  
2. 2P-3210 [3] BOLT  
3. 4N-3916 [1] GASKET  
4. 2P-3200 [7] BOLT  
5. 4N-3914 C [1] PLATE  
6. 6N-0389 C [1] STUD  
  4H-6145 [1] GASKET  
7. 2P-3202 [4] BOLT  
8. 4N-0867 [1] GASKET  
9. 2P-3261 [1] NUT  
10. 4N-3913 [1] HOUSING ASSEM.  
11. 5M-6214 [1] PLUG  
12. 6F-7012 [2] STUD  
13. 0S-0699 [8] STUD  
14. 4B-4278 C [6] WASHER  
  C   INDICATES CHANGE
 

#UEG0747S0028
 

4N-6006: FASTENER GP-FRONT HOUSING

4N6006 FRONT HOUSING FASTENER GROUP
Part of 4N2239 Basic Engine Arrangement listed on Page 12
Only separate parts serviced
c148695 UEG0747S
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Parts for your 3406 MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1A-2029 C [4] BOLT  
  5M-2894 C [4] WASHER  
2. 4N-4107 [1] PLATE  
  C   CHANGE FROM PREVIOUS TYPE
 

#UEG0747S0029
 

4N-5691: COVER GP-FRONT HOUSING

4N5691 FRONT COVER GROUP
Serial No. 91U1 to 91U80 inclusive
Part of 4N2239 Basic Engine Arrangement listed on Page 12
c201072 UEG0747S
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Parts for your 3406 MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2P-3213 [7] BOLT  
2. 4N-0273 [1] COVER  
  4N-0274 [1] GASKET  
3. 2P-3201 [3] BOLT  
4. 3B-4506 [5] LOCKWASHER  
5. 6D-2675 C [2] STUD  
6. 1D-4719 [3] NUT  
  2M-0849 [3] WASHER  
7. 9L-0758 [1] COVER  
  9L-1633 [1] GASKET  
8. 5S-2184 [2] SCREW  
9. 2P-3261 [10] NUT  
10. 4B-4278 [8] WASHER  
11. 4N-3990 [1] COVER  
  4N-3989 [1] GASKET  
12. 0S-1587 [2] BOLT  
13. 2P-3204 [2] BOLT  
14. 4N-5250 [1] COVER  
15. 4N-3854 [1] GASKET  
  C   INDICATES CHANGE
 

Information:

Engine News
Special Instruction
3400 Cylinder Head To Block Joint Repair Procedure{1124}
3400 Cylinder Head To Block Joint Repair Procedure{1124}
INSTALLATION OF 7N628 GASKET SERVICE GROUP{1101, 1221}
INSTALLATION OF 7N628 GASKET SERVICE GROUP{1101, 1221}
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}
Installation Of 2W3815 Or 5N93 Inserts{1217}
Installation Of 2W3815 Or 5N93 Inserts{1217}
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}
Determining the Cause of Fuel Dilution of Engine Oil {1101, 1124, 1251, 1280, 1290}
Determining the Cause of Fuel Dilution of Engine Oil {1101, 1124, 1251, 1280, 1290}
Specifications
Valves
3406 INDUSTRIAL & MARINE ENGINES
Cylinder Head
3406 INDUSTRIAL & MARINE ENGINES
Tool Operating Manual
185-5321 Cylinder Head Lifting Hook Assembly{0599, 0632, 0703, 1101, 6459}
185-5321 Cylinder Head Lifting Hook Assembly{0599, 0632, 0703, 1101, 6459}
{0374, 0599, 0629, 0632, 0700, 0701, 1100, 1101}
{0374, 0599, 0629, 0632, 0700, 0701, 1100, 1101}
M0088789: 550-9152 Gage Ring Assembly {0374, 0599, 0700, 0701, 0759, 1100, 1105}
M0088789: 550-9152 Gage Ring Assembly {0374, 0599, 0700, 0701, 0759, 1100, 1105}
Reuse And Salvage Guidelines
Engine Valve Failure Modes{1100, 1105}
Engine Valve Failure Modes{1100, 1105}
Reuse and Salvage for Cylinder Head Assemblies {1100, 1101, 1103, 1104, 1105, 1106, 1108, 1109, 1115, 1117, 1121, 1124, 1125}
Reuse and Salvage for Cylinder Head Assemblies {1100, 1101, 1103, 1104, 1105, 1106, 1108, 1109, 1115, 1117, 1121, 1124, 1125}
Reuse & Salvage for Valvetrain Components {1102, 1108, 1109, 1121, 1123}
Reuse & Salvage for Valvetrain Components {1102, 1108, 1109, 1121, 1123}
Using the 9U-5383 Vacuum Tester {0774, 0781, 1000, 1100}
Using the 9U-5383 Vacuum Tester {0774, 0781, 1000, 1100}
Applied Failure Analysis
Engine Valve Failure Modes{1100, 1105}
Engine Valve Failure Modes{1100, 1105}
Information Release Memo
PRODUCT LINE ADDITIONS: REMANUFACTURED SHORT AND LONG BLOCKS FOR VARIOUS APPLICATIONS
PRODUCT LINE ADDITIONS: REMANUFACTURED SHORT AND LONG BLOCKS FOR VARIOUS APPLICATIONS
APPEARANCE CHANGE ON REMAN SHORT BLOCKS
APPEARANCE CHANGE ON REMAN SHORT BLOCKS
Disassembly and Assembly
Precombustion Chambers
3406 INDUSTRIAL & MARINE ENGINES
Cylinder Head
3406 INDUSTRIAL & MARINE ENGINES
Valves
3406 INDUSTRIAL & MARINE ENGINES
Valve Seat Inserts
3406 INDUSTRIAL & MARINE ENGINES
Bridge Dowels, Valve Guides
3406 INDUSTRIAL & MARINE ENGINES
Valve Guides
3406 INDUSTRIAL & MARINE ENGINES
Service Magazine

Caterpillar Parts SIS Catalog 3406 :

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