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7L7489 ENCLOSED CLUTCH GROUP 7L7490 Clutch Assembly parts are shown on Pages 120 & 121 Provides 1950 H.P. for light duty, 1255 H.P. for normal duty & 750 H.P. for heavy duty. Only separate parts serviced G399


BASIC ENGINE
CLUTCH GP
COUPLING GP
GENERATORS
INSTALLATION AR-GENERATOR
BASIC ENGINE
MOUNTING GP-ENGINE
GENERATORS
INSTALLATION AR-GENERATOR

GAS ENGINE G399 GAS ENGINE 49C
 G399 ENGINE 49C00001-00260 UEG0038S G399 49C   (1968)

BASIC ENGINE

CLUTCH GP
CLUTCH GP
7L-7490 CLUTCH GP
CLUTCH GP
7L-7490 CLUTCH GP
POWER TAKE-OFF GP
7L-7489 POWER TAKE-OFF GP
 

#UEG0038S0430
 

7L-7489: POWER TAKE-OFF GP

7L7489 ENCLOSED CLUTCH GROUP
7L7490 Clutch Assembly parts are shown on Pages 120 & 121
Provides 1950 H.P. for light duty, 1255 H.P. for normal duty & 750 H.P. for
heavy duty. Only separate parts serviced
c101007 UEG0038S
7L7489 POWER TAKE-OFF GP Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7L-7490 Y [1] CLUTCH ASSEM.  
    (See Separate Illustration)
2. 7L-7857 [1] SUPPORT ASSEM.  
3. 0S-1587 [16] BOLT  
4. 3B-4508 [16] LOCKWASHER  
5. 0S-1589 [12] BOLT  
6. 3B-4510 [12] LOCKWASHER  
  Y   SEPARATE ILLUSTRATION
 

#UEG0038S0431
 

5L-3395: COUPLING GP-FLEXIBLE

5L3395 FLEXIBLE COUPLING GROUP
c105761 UEG0038S
5L3395 COUPLING GP-FLEXIBLE Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  1A-1135 [12] BOLT  
  3B-4510 [12] LOCKWASHER  
  4L-7464 [4] CONTAINER GREASE  
    (NOT SHOWN-FOR LUBRICATION OF COUPLING CAVITY)
  0S-1615 [12] BOLT  
  3B-4504 [12] LOCKWASHER  
  3L-9030 [2] PLATE  
  3L-9032 [2] GASKET  
  7L-5589 [3] BOOT  
  2L-2040 Y [1] GUARD GROUP  
    (SEE SEPARATE ILLUSTRATION)
  0S-1615 [12] BOLT  
  3B-4504 [12] LOCKWASHER  
  5L-4576 [1] HUB  
  6L-3049 [1] COUPLING  
  1D-4625 [8] BOLT  
  3B-4514 [8] LOCKWASHER  
  6L-3048 [1] COUPLING  
  Y   SEPARATE ILLUSTRATION
 

#UEG0038S0432
 

2L-2040: GUARD GP-COUPLING

2L2040 GENERATOR COUPLING GUARD GROUP
Also part of 5L3395 Flexible Coupling Group
c43539 UEG0038S
2L2040 GUARD GP-COUPLING Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  4F-4879 [2] CAP SCREW  
  3B-4506 [2] LOCKWASHER  
  6F-9728 [1] COVER  
  0S-1621 [16] CAP SCREW  
  6F-9731 [1] COVER ASSEM  
  3B-4508 [16] LOCKWASHER  
 

#UEG0038S0433
 

7L-5479: COUPLING GP-DRIVE

7L5479 GENERATOR DRIVE COUPLING GROUP
Part of 7L7791 & 1N8473 Generator Installation Arrangements shown on
Pages 124, 124A & 124B
c108437 UEG0038S
7L5479 COUPLING GP-DRIVE Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  7L-5453 [1] PLATE ASSEM  
  1D-4635 [8] BOLT (2 50" LONG)  
  3B-4516 [8] LOCKWASHER  
  9M-2828 [8] WASHER  
    -OR-
  1D-4625 [8] BOLT (2.50" LONG)  
  3B-4514 [8] LOCKWASHER  
  9H-1031 [8] WASHER  
  7L-5452 [5] SHIM  
  1B-4367 [12] BOLT  
  3B-4510 [12] LOCKWASHER  
 

#UEG0038S0434
 

7L-7791: INSTALLATION AR

7L7791 GENERATOR INSTALLATION ARRANGEMENT--Type 1
7L5479 Generator Drive Coupling Group parts are shown on Page 123
c128444 UEG0038S
7L7791 INSTALLATION AR Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2H-3737 [8] BOLT  
  1B-4202 [8] NUT  
  9M-1974 [8] WASHER  
    (NOT SHOWN-GENERATOR LINE LEADS)
  5L-2501 [12] SHIM (030" THICK)  
  5L-2502 [4] SHIM (105" THICK)  
  7L-7795 [2] BRACE ASSEM  
  7L-7793 [1] SUPPORT (LEFT HAND)  
  1A-5822 [16] BOLT  
  3B-4508 [16] LOCKWASHER  
  7L-5479 Y [1] COUPLING GROUP  
    (SEE SEPARATE ILLUSTRATION)
  1D-4637 [2] BOLT  
  1B-4333 [2] NUT  
  3B-4516 [2] LOCKWASHER  
  1H-1179 [12] SHIM (0299" THICK)  
  9F-8369 [6] SHIM (1046" THICK)  
  2A-1538 [8] BOLT  
  1B-4331 [8] NUT  
  3B-4512 [8] LOCKWASHER  
  7L-7793 [1] SUPPORT (RIGHT HAND)  
  0S-1626 [12] BOLT (1.50" LONG)  
  2A-1538 [16] BOLT (2.25" LONG)  
  1B-4331 [16] NUT  
  3B-4512 [28] LOCKWASHER  
  Y   SEPARATE ILLUSTRATION
 

#UEG0038S0435
 

7L-7791: INSTALLATION AR

7L7791 GENERATOR INSTALLATION ARRANGEMENT--Type 2
7L5479 Generator Drive Coupling Group parts are shown on Page 123
c128445 UEG0038S
7L7791 INSTALLATION AR Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2H-3737 [8] BOLT  
  1B-4202 [8] NUT  
  9M-1974 [8] WASHER  
    (NOT SHOWN-GENERATOR LINE LEADS)
  1D-4637 [2] BOLT  
  1B-4333 [2] NUT  
  3B-4516 [2] LOCKWASHER  
  1H-1179 [12] SHIM (0299" THICK)  
  9F-8369 [6] SHIM (1046" THICK)  
  2A-1538 [4] BOLT  
  3B-4512 [4] LOCKWASHER  
  2N-1455 [12] SHIM (.032" THICK)  
  2N-1456 [4] SHIM (105" THICK)  
  2N-1628 [2] BRACE ASSEM.  
  7L-7793 [1] SUPPORT (LEFT HAND)  
  1A-5822 [16] BOLT  
  3B-4508 [16] LOCKWASHER  
  7L-5479 Y [1] COUPLING GROUP  
    (SEE SEPARATE ILLUSTRATION)
  1D-4637 [2] BOLT  
  1B-4333 [2] NUT  
  3B-4516 [2] LOCKWASHER  
  1H-1179 [12] SHIM (0299" THICK)  
  9F-8369 [6] SHIM (1046" THICK)  
  2A-1538 [4] BOLT  
  3B-4512 [4] LOCKWASHER  
  7L-7793 [1] SUPPORT (RIGHT HAND)  
  0S-1626 [12] BOLT (1.50" LONG)  
  2A-1538 [16] BOLT (2.25" LONG)  
  1B-4331 [16] NUT  
  3B-4512 [28] LOCKWASHER  
  Y   SEPARATE ILLUSTRATION
 

#UEG0038S0436
 

7L-7791: INSTALLATION AR

7L7791 GENERATOR INSTALLATION ARRANGEMENT--Type 3
7L5479 Coupling and 2N3911 Support Rails are shown on Page 123 and 124C
c136262 UEG0038S
7L7791 INSTALLATION AR Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2H-3737 [8] BOLT  
  1B-4202 [8] NUT  
  9M-1974 [8] WASHER  
    (NOT SHOWN-GENERATOR LINE LEADS)
  1D-4637 [2] BOLT  
  1B-4333 [2] NUT  
  3B-4516 [2] LOCKWASHER  
  1H-1179 [12] SHIM (.0299" THICK)  
  9F-8369 [6] SHIM (.1046" THICK)  
  2N-3911 Y [1] SUPPORT RAILS GROUP  
    (SEE SEPARATE ILLUSTRATION)
  1A-5822 [16] BOLT  
  3B-4508 [16] LOCKWASHER  
  7L-5479 Y [1] COUPLING GROUP  
    (SEE SEPARATE ILLUSTRATION)
  1D-4637 [2] BOLT  
  1B-4333 [2] NUT  
  3B-4516 [2] LOCKWASHER  
  1H-1179 [12] SHIM (.0299" THICK)  
  9F-8369 [6] SHIM (1046" THICK)  
  Y   SEPARATE ILLUSTRATION
 

#UEG0038S0437
 

7L-7791: INSTALLATION AR

7L7791 GENERATOR INSTALLATION ARRANGEMENT--Type 4
7L5479 Coupling and 2N3911 Support Rails are shown on Pages 123 & 124C
c213565 UEG0038S
7L7791 INSTALLATION AR Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  1D-4637 [2] BOLT  
  1B-4333 [2] NUT  
  3K-5234 C [2] WASHER  
  1H-1179 [12] SHIM (0299" THICK)  
  9F-8369 [6] SHIM (1046" THICK)  
  Y [1] SUPPORT RAILS GROUP  
    (SEE SEPARATE ILLUSTRATION)
  1A-5822 [16] BOLT  
  2M-0849 C [16] WASHER  
  7L-5479 Y [1] COUPLING GROUP  
    (SEE SEPARATE ILLUSTRATION)
  1D-4637 [2] BOLT  
  1B-4333 [2] NUT  
  3K-5234 C [2] WASHER  
  1H-1179 [12] SHIM (.0299" THICK)  
  9F-8369 [6] SHIM (.1046" THICK)  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEG0038S0438
 

2N-3911: RAIL GP-ENGINE & GEN SUPPORT

2N3911 ENGINE AND GENERATOR SUPPORT RAILS GROUP
Also part of 7L7791 Generator Installation Arrangement
c136263 UEG0038S
2N3911 RAIL GP-ENGINE & GEN SUPPORT Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7L-7793 [2] SUPPORT (R.H. & L.H.)  
2. 2A-1538 [24] BOLT  
3. 3B-4512 [36] LOCKWASHER  
4. 1B-4331 [16] NUT  
5. 0S-1626 [12] BOLT  
6. 2N-1628 [2] BRACE ASSEM. (R.H. to L.H. Support)  
  2N-1455 [12] SHIM (.032" Thick)  
  2N-1456 [4] SHIM (.105" Thick)  
    (Brace to L.H. Support)
 

#UEG0038S0439
 

1N-8473: INSTALLATION AR

1N8473 GENERATOR INSTALLATION ARRANGEMENT--Type 1
FOR USE WITH NATURALLY ASPIRATED ENGINES
7L5479 Generator Drive Coupling parts are shown on Page 123
c115100 UEG0038S
1N8473 INSTALLATION AR Parts scheme
  For full view, you need register

Parts for your G399 GAS ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2H-3737 [8] BOLT  
  1B-4202 [8] NUT  
  9M-1974 [8] WASHER  
    (NOT SHOWN-GENERATOR LINE LEADS)
  1N-8474 [2] SUPPORT  
  5L-2501 [12] SHIM (030" THICK)  
  5L-2502 [4] SHIM (105" THICK)  
  7L-7795 [2] BRACE ASSEM.  
  0L-1178 [8] BOLT  
  1B-4331 [8] NUT  
  3B-4512 [8] LOCKWASHER  
  7L-7793 [1] SUPPORT (LEFT HAND)  
  0S-1587 [16] BOLT  
  3B-4508 [16] LOCKWASHER  
  7L-5479 Y [1] COUPLING GROUP  
    (SEE SEPARATE ILLUSTRATION)
  1D-4637 [2] BOLT  
  1B-4333 [2] NUT  
  3B-4516 [2] LOCKWASHER  
  1H-1179 [12] SHIM (0299" THICK)  
  9F-8369 [6] SHIM (1046" THICK)  
  2A-1538 [8] BOLT  
  1B-4331 [8] NUT  
  3B-4512 [8] LOCKWASHER  
  7L-7793 [1] SUPPORT (RIGHT HAND)  
  0S-1626 [12] BOLT (1.50" LONG)  
  2A-1538 [16] BOLT (2.25" LONG)  
  1B-4331 [16] NUT  
  3B-4512 [28] LOCKWASHER  
  Y   SEPARATE ILLUSTRATION
 

Information:

Engine News
New Dust Covers Available For Twin Disc IBF318 And IBF321 Rear Power Take-Off Clutches
1983/09/14
Special Instruction
Procedure For Conversion From Oil Lubrication To Grease Lubrication For Rear Power Takeoff Clutches{3055}
Procedure For Conversion From Oil Lubrication To Grease Lubrication For Rear Power Takeoff Clutches{3055}
Specifications
Enclosed Clutches
6.25" BORE ENGINE ATTACHMENTS
Disassembly and Assembly
2N6961 Clutch Assembly
6.25" BORE ENGINE ATTACHMENTS
Service Magazine
New Clutches For Rear Power Take-Off{3055,3054}
1983/02/14

Caterpillar Parts SIS Catalog G399 :

CLUTCH GP
7L-7490 CLUTCH GP
CLUTCH GP
7L-7490 CLUTCH GP
CLUTCH ASSEMBLY
6L-6219 CLUTCH ASSEMBLY
CLUTCH GP
2N-7080 CLUTCH GP
POWER TAKE-OFF GP-FRONT
7L-7578 POWER TAKE-OFF GP-FRONT
POWER TAKE-OFF GP-REAR
6L-6220 POWER TAKE-OFF GP-REAR
POWER TAKE-OFF GP-REAR
6L-6220 POWER TAKE-OFF GP-REAR
POWER TAKE-OFF GP-FRONT
7L-7578 POWER TAKE-OFF GP-FRONT
COUPLING GP-FLEXIBLE
5L-3395 COUPLING GP-FLEXIBLE
GUARD GP-COUPLING
2L-2040 GUARD GP-COUPLING
COUPLING GP-DRIVE
7L-5479 COUPLING GP-DRIVE
INSTALLATION AR
7L-7791 INSTALLATION AR
INSTALLATION AR
7L-7791 INSTALLATION AR
INSTALLATION AR
7L-7791 INSTALLATION AR
INSTALLATION AR
7L-7791 INSTALLATION AR
RAIL GP-ENGINE & GEN SUPPORT
2N-3911 RAIL GP-ENGINE & GEN SUPPORT

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