TURBOCHARGERS Serial No. 68B357 to 68B442 inclusive PART OF 4L1129 S.A.E. STANDARD ROTATION, 5L2736 AND 5L7143 S.A.E. OPPOSITE ROTATION TURBOCHARGED ENGINE ARRANGEMENTS 8M1780 Turbocharger Assembly parts are shown on Pages 30A and 31. Refer also to Pages 166 through 178 for special parts D379

AIR INLET AND EXHAUST SYSTEM

TURBOCHARGER GP

0. TURBOCHARG
1. TURBOCHARG
2. TURBOCHARG
3. TURBOCHARG
4. 8M-1780 TURBOCHARG
5. 8M-1780 TURBOCHARG
6. 8M-1780 TURBOCHARG
7. TURBOCHARG
8. TURBOCHARG
9. TURBOCHARG
0. INFORMATION

INDUSTRIAL ENGINE D379 INDUSTRIAL ENGINE 68B
D379 & G379 ENGINES 68B00001-00674 UE034617 D379 68B (1961)

AIR INLET AND EXHAUST SYSTEM

TURBOCHARGER GP

TURBOCHARGERS

#UE0346170030

TURBOCHARGERS

TURBOCHARGERS
Serial No. 68B357 to 68B442 inclusive
PART OF 4L1129 S.A.E. STANDARD ROTATION, 5L2736 AND 5L7143 S.A.E. OPPOSITE ROTATION
TURBOCHARGED ENGINE ARRANGEMENTS
8M1780 Turbocharger Assembly parts are shown on Pages 30A and 31. Refer also to Pages 166 through 178 for special parts

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Parts for your D379 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
5L-8856	[2]	COUPLING
5M-3528	[4]	FITTING
8F-8997	[4]	NUT
		(1 IN EACH FITTING 5M3528)
5L-4172	[1]	PIPE (EXHAUST)
4B-4845	[2]	PLUG
0T-0055	[3]	BOLT
3B-4506	[3]	LOCKWASHER
0S-1587	[4]	BOLT
1B-5357	[4]	NUT
5L-8554	[1]	TUBE
4L-9169	[4]	GASKET
5L-3146	[1]	ELBOW (LEFT HAND)
5L-8854	[2]	RING
5L-8855	[2]	RING
8M-1780 Y	[2]	TURBOCHARGER ASSEM.
		(SEE SEPARATE ILLUSTRATION)
7H-1558	[2]	GASKET
8M-2295	[8]	BOLT
8M-2296	[8]	NUT
5L-8553	[1]	TUBE
4L-8337	[2]	SEAL
5L-3144	[2]	PIPE
5H-7704	[2]	SEAL
5L-3147	[1]	SUPPORT
5L-3145	[1]	ELBOW (RIGHT HAND)
0S-1590	[3]	BOLT
3B-4506	[3]	LOCKWASHER
5L-3143	[2]	ELBOW
0S-1591	[32]	BOLT
1D-4717	[32]	NUT
3B-4506	[32]	LOCKWASHER
Y		SEPARATE ILLUSTRATION

#UE0346170031

TURBOCHARGERS

TURBOCHARGERS
Serial No. 68B443 to 68B480 inclusive
PART OF 4L1129 S.A.E. STANDARD ROTATION, 5L2736 AND 5L7143 S.A.E. OPPOSITE ROTATION
TURBOCHARGED ENGINE ARRANGEMENTS
8M1780 Turbocharger Assembly parts are shown on Page 31. Refer also to Pages 166 through 178 for special parts

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Parts for your D379 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
5L-8856	[2]	COUPLING
5M-3528	[4]	FITTING
8F-8997	[4]	NUT
		(1 IN EACH FITTING 5M3528)
3B-6768	[2]	BUSHING
		(FUEL PUMP GEAR COVER)
5L-4172	[1]	PIPE (EXHAUST)
4B-4845	[2]	PLUG
0T-0055	[3]	BOLT
3B-4506	[3]	LOCKWASHER
0S-1587	[4]	BOLT
1B-5357	[4]	NUT
5L-8554	[1]	TUBE
4L-9169	[4]	GASKET
5L-3146	[1]	ELBOW (LEFT HAND)
5L-8854	[2]	RING
5L-8855	[2]	RING
8M-1780 Y	[2]	TURBOCHARGER ASSEM.
		(SEE SEPARATE ILLUSTRATION)
7H-1558	[2]	GASKET
8M-2295	[8]	BOLT
8M-2296	[8]	NUT
5L-8553	[1]	TUBE
4L-8337	[2]	SEAL
5L-3144	[2]	PIPE
5H-7704	[2]	SEAL
5L-3147	[1]	SUPPORT
5L-3145	[1]	ELBOW (RIGHT HAND)
0S-1590	[3]	BOLT
3B-4506	[3]	LOCKWASHER
5L-3143	[2]	ELBOW
0S-1591	[32]	BOLT
1D-4717	[32]	NUT
3B-4506	[32]	LOCKWASHER
Y		SEPARATE ILLUSTRATION

#UE0346170032

TURBOCHARGERS

TURBOCHARGERS
Serial No. 68B481 to 68B488 inclusive
PART OF 4L1129 S.A.E. STANDARD ROTATION, 5L2736 AND 5L7143 S.A.E. OPPOSITE ROTATION
TURBOCHARGED ENGINE ARRANGEMENTS
8M1780 Turbocharger Assembly parts are shown on Page 31. Refer also to Pages 166 through 178 for special parts

c86028 UE034617

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Parts for your D379 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
5L-8856	[2]	COUPLING
1L-1118	[4]	FITTING
8F-8998	[4]	NUT
		(1 IN EACH FITTING 1L1118)
5L-4172	[1]	PIPE (EXHAUST)
4B-4845	[2]	PLUG
0T-0055	[3]	BOLT
3B-4506	[3]	LOCKWASHER
0S-1587	[4]	BOLT
1B-5357	[4]	NUT
6L-1970	[1]	TUBE
4L-9169	[4]	GASKET
5L-3146	[1]	ELBOW (LEFT HAND)
5L-8854	[2]	RING
5L-8855	[2]	RING
8M-1780 Y	[2]	TURBOCHARGER ASSEM.
		(SEE SEPARATE ILLUSTRATION)
7H-1558	[2]	GASKET
8M-2295	[8]	BOLT
8M-2296	[8]	NUT
6L-1969	[1]	TUBE
4L-8337	[2]	SEAL
5L-3144	[2]	PIPE
5H-7704	[2]	SEAL
5L-3147	[1]	SUPPORT
5L-3145	[1]	ELBOW (RIGHT HAND)
0S-1590	[3]	BOLT
3B-4506	[3]	LOCKWASHER
5L-3143	[2]	ELBOW
0S-1591	[32]	BOLT
1D-4717	[32]	NUT
3B-4506	[32]	LOCKWASHER
Y		SEPARATE ILLUSTRATION

#UE0346170033

TURBOCHARGERS

TURBOCHARGERS
Effective with Serial No. 68B489
PART OF 4L1129 S.A.E. STANDARD ROTATION, 5L2736 AND 5L7143 S.A.E. OPPOSITE ROTATION
TURBOCHARGED ENGINE ARRANGEMENTS
8M1780 Turbocharger Assembly parts are shown on Page 31. Refer also to Pages 166 through 178 for special parts

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Parts for your D379 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
5L-8856	[2]	COUPLING
1L-1118	[4]	FITTING
8F-8998	[4]	NUT
		(1 IN EACH FITTING 1L1118)
1D-4585	[6]	BOLT
3B-4510	[6]	LOCKWASHER
		(NOT SHOWN-FUEL PUMP GEAR COVER TO BLOCK AND FLYWHEEL HOUSING)
9B-0887	[2]	PLUG
0T-0055	[3]	BOLT
3B-4506	[3]	LOCKWASHER
0S-1587	[4]	BOLT
1B-5357	[4]	NUT
6L-2810	[1]	TUBE
4L-9169	[4]	GASKET
5L-3146	[1]	ELBOW (LEFT HAND)
5L-4172	[1]	PIPE (EXHAUST)
5L-8854	[2]	RING
5L-8855	[2]	RING
8M-1780	[2]	TURBOCHARGER ASSEM.
		-OR-
1S-0520 Y	[2]	TURBOCHARGER ASSEM.
		(SEE SEPARATE ILLUSTRATION)
1S-4295	[2]	GASKET
8M-2295	[8]	BOLT
8M-2296	[8]	NUT
6L-2809	[1]	TUBE
4L-8337	[2]	SEAL
5L-3144	[2]	PIPE
5H-7704	[2]	SEAL
5L-3147	[1]	SUPPORT
5L-3145	[1]	ELBOW (RIGHT HAND)
0S-1590	[3]	BOLT
3B-4506	[3]	LOCKWASHER
5L-3143	[2]	ELBOW
0S-1591	[32]	BOLT
1D-4717	[32]	NUT
3B-4506	[32]	LOCKWASHER
Y		SEPARATE ILLUSTRATION

#UE0346170034

8M-1780: TURBOCHARGER ASSEMBLY

TURBOCHARGER ASSEMBLY

8M1780 TURBOCHARGER ASSEMBLY--2 Assemblies Required
Serial No. 68B1 to 68B276 and 68B278 to 68B284 inclusive
Part of Turbochargers shown on Page 28

c81185 UE034617

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Parts for your D379 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
7M-9901	[1]	HOUSING
8M-2665	[1]	BREATHER ASSEM.
7M-7611	[3]	RING
4M-6990		RING
7M-9983	[1]	ROTATING ASSEM.
7M-7612	[1]	WASHER
7M-7613	[2]	BEARING
7M-9912	[1]	PLATE
8M-7944	[1]	NOZZLE
7M-9917	[1]	CLAMP
7M-9918	[1]	NUT
7M-9984	[1]	COVER
7M-9920	[1]	PLATE (INSTR.)
8B-9263	[2]	SCREW
2L-0625	[5]	SCREW ASSEM.
7M-9909	[1]	SEAL
7M-9913	[1]	RETAINER
7M-9919	[1]	PLATE (LOCK)
7M-9910	[3]	BOLT
4M-6978	[1]	SHIM (.002"THICK)
4M-6979	[1]	SHIM (.005"THICK)
4M-6980	[1]	SHIM (.010"THICK)
4M-8012	[1]	NUT
7M-9908	[1]	SLEEVE
4M-8013	[4]	RING
7M-9923	[1]	SPACER
7M-9907	[2]	RING
		(PARTS OF ROTATING ASSEM. 7M9983)
7M-9915	[1]	RETAINER
7M-9922	[1]	BEARING
7M-9914	[1]	DEFLECTOR
7M-9911	[1]	PLATE
7M-9927	[1]	HOUSING
7M-9916	[1]	CLAMP
7M-9918	[1]	NUT

#UE0346170035

8M-1780: TURBOCHARGER ASSEMBLY

TURBOCHARGER ASSEMBLY

8M1780 TURBOCHARGER ASSEMBLY--2 Assemblies Required
Serial No. 68B277 and 68B285 to 68B397 inclusive
Part of Turbochargers shown on Pages 28A and 28B

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Parts for your D379 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
7M-9901	[1]	HOUSING
7M-7611	[3]	RING
4M-6990	[1]	RING
9M-0491 R	[1]	WHEEL AND WHEEL ASSEM.
7M-7612	[1]	WASHER
7M-7613	[2]	BEARING
1S-2098	[1]	PLATE
8M-7944	[1]	NOZZLE
7M-9917	[1]	CLAMP
7M-9918	[1]	NUT
7M-9984	[1]	COVER
7M-9920	[1]	PLATE (INSTRUCTION)
8B-9263	[2]	SCREW
2L-0625	[5]	SCREW ASSEM
7M-9909	[1]	SEAL
7M-9913	[1]	RETAINER
7M-9919	[1]	PLATE (LOCK)
7M-9910	[3]	BOLT
8M-7167	[1]	SHIM (.002" THICK)
8M-7168	[1]	SHIM (.005" THICK)
8M-7169	[1]	SHIM (.010" THICK)
4M-8012	[1]	NUT
7M-9908	[1]	SLEEVE
4M-8013	[4]	RING
7M-9923	[1]	SPACER
7M-9907	[2]	RING
9M-0495	[1]	WHEEL
7M-9915	[1]	RETAINER
7M-9922	[1]	BEARING
7M-9914	[1]	DEFLECTOR
7M-9911	[1]	PLATE
7M-9927	[1]	HOUSING
7M-9916	[1]	CLAMP
7M-9918	[1]	NUT
R		REMFG PART MAY BE AVAILABLE

#UE0346170036

8M-1780: TURBOCHARGER ASSEMBLY

TURBOCHARGER ASSEMBLY

8M1780 TURBOCHARGER ASSEMBLY--2 Assemblies Required
Effective with Serial No. 68B398
Part of Turbochargers shown on Pages 28B through 29

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Parts for your D379 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
7M-9901 H	[1]	HOUSING
7M-7611	[3]	RING
4M-6990	[1]	RING
9M-0491 R	[1]	WHEEL AND SHAFT ASSEM.
1S-3887	[1]	SPACER
3S-4006	[2]	BEARING
1S-2098	[1]	PLATE
8M-7944 H	[1]	NOZZLE
7M-9917 H	[1]	CLAMP
7M-9918 H	[1]	NUT
7M-9984 H	[1]	COVER
1S-2500	[1]	CARTRIDGE ASSEM.
		(CONSISTS OF ALL PARTS EXCEPT THOSE MARKED H)
7M-9920 H	[1]	NAME PLATE
8B-9263 H	[2]	SCREW
2S-1507	[1]	NAME PLATE
		(CARTRIDGE)
8H-3710	[1]	SCREW
9M-9546	[5]	SCREW
1M-0976	[5]	WASHER
1S-0145	[2 FEET]	LOCKWIRE
7M-9909	[1]	SEAL
7M-9913	[1]	RETAINER
7M-9919	[3]	PLATE (LOCK)
7M-9910	[3]	BOLT
8M-7167	[1]	SHIM (002"THICK)
8M-7168	[1]	SHIM (005"THICK)
8M-7169	[1]	SHIM (010" THICK)
4M-8012	[1]	NUT
7M-9908	[1]	SLEEVE
4M-8013	[4]	RING
7M-9923	[1]	SPACER
7M-9907	[2]	RING
9M-0495	[1]	WHEEL
7M-9915	[1]	RETAINER
7M-9922	[1]	BEARING
7M-9914	[1]	DEFLECTOR
7M-9911	[1]	PLATE
3S-3995	[1]	HOUSING
9M-9545	[1]	SEAL
7M-9916 H	[1]	CLAMP
7M-9918 H	[1]	NUT
R		REMFG PART MAY BE AVAILABLE

#UE0346170037

TURBOCHARGER MOUNTING

TURBOCHARGER MOUNTING
PART OF 5L3477 TURBOCHARGED NATURAL GAS ENGINE ARRANGEMENT
Refer also to Pages 166 through 178 for special parts

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Parts for your D379 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
1A-8537	[8]	BOLT
1B-5358	[8]	NUT
5H-8310	[2]	FLANGE
5H-8331	[2]	GASKET
5L-8088	[1]	ELBOW
5L-5729	[2]	COUPLING
1A-5964	[3]	BOLT
1D-4717	[3]	NUT
3B-4506	[3]	LOCKWASHER
0S-1587	[4]	BOLT
1B-5357	[4]	NUT
3B-4508	[4]	LOCKWASHER
5L-3510	[1]	SUPPORT
4L-9169	[2]	GASKET
5L-3146	[1]	ELBOW (LEFT HAND)
5L-8088	[1]	ELBOW
4B-4845	[2]	PLUG
5L-6583	[1]	SUPPORT
5B-9627	[3]	SPACER
1A-2029	[6]	BOLT
7H-1558	[2]	GASKET
0S-1571	[8]	BOLT
1B-5355	[8]	NUT
4L-8337	[2]	SEAL
5L-3144	[2]	PIPE
5H-7704	[2]	SEAL
5L-3147	[1]	SUPPORT
5L-3145	[1]	ELBOW (RIGHT HAND)
0L-2070	[3]	BOLT
1D-4717	[3]	NUT
3B-4506	[3]	LOCKWASHER
0S-1591	[16]	BOLT
1D-4717	[16]	NUT
3B-4506	[16]	LOCKWASHER

#UE0346170038

TURBOCHARGER LUBRICATION VALVE

TURBOCHARGER LUBRICATION VALVE
Serial No. 68B1 to 68B104 inclusive
PART OF ALL ARRANGEMENTS COVERED IN THIS PARTS BOOK EXCEPTING 5L5261 NATURALLY ASPIRATED
NATURAL GAS ENGINE ARRANGEMENT

c70565 UE034617

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Parts for your D379 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
7H-3270	[2]	GASKET
6H-3137	[3]	NUT
6H-3136	[3]	SLEEVE
		(PARTS OF FITTING 5L7290)
5L-7294	[1]	TUBE
2B-3243	[1]	CLIP (1.50"LONG)
8F-8513	[4]	CLIP (1.25"LONG)
6H-3137	[1]	NUT
6H-3136	[1]	SLEEVE
		(PARTS OF FITTING 6H1993)
6H-1993	[1]	FITTING
1H-1363	[1]	ELBOW
6H-1993	[1]	FITTING
6H-3137	[1]	NUT
6H-3136	[1]	SLEEVE
		(PARTS OF FITTING 6H1993)
7M-6843	[1]	GASKET
5L-7283	[1]	TUBE ASSEM. (R.H.)
5L-7282	[1]	TUBE ASSEM. (L.H.)
7M-6841	[1]	ADAPTER
5L-7290	[1]	FITTING
7H-3171	[3]	PLUG
6H-3137	[1]	NUT
6H-3136	[1]	SLEEVE
		(PARTS OF FITTING 6H1993)
6H-1993	[1]	FITTING
1H-1363	[1]	ELBOW
7M-6842	[1]	PLUNGER
7M-6855	[1]	BODY
7M-6124	[1]	SPRING
7M-6844	[1]	GASKET
1L-0909	[1]	ELBOW
6H-3137	[1]	NUT
6H-3136	[1]	SLEEVE
		(PARTS OF ELBOW 1L909)
5L-7287	[1]	TUBE
1D-4706	[4]	BOLT
3B-4506	[4]	LOCKWASHER
3B-7741	[1]	NIPPLE
1H-1360	[1]	COUPLING
1L-0909	[1]	ELBOW
6H-3137	[1]	NUT
6H-3136	[1]	SLEEVE
		(PARTS OF ELBOW 1L909)
5L-7286	[1]	TUBE

#UE0346170039

TURBOCHARGER LUBRICATION VALVE

TURBOCHARGER LUBRICATION VALVE
Serial No. 68B105 to 68B272, 68B274 and 68B275 inclusive
PART OF ALL ARRANGEMENTS COVERED IN THIS PARTS BOOK EXCEPTING 5L5261 NATURALLY ASPIRATED
NATURAL GAS ENGINE ARRANGEMENT

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Parts for your D379 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
7H-3270	[2]	GASKET
6H-3137	[3]	NUT
6H-3136	[3]	SLEEVE
		(PARTS OF FITTING 5L7290)
5L-7294	[1]	TUBE
2B-3243	[1]	CLIP (1.50"LONG)
8F-8513	[4]	CLIP (1.25"LONG)
6H-3137	[1]	NUT
6H-3136	[1]	SLEEVE
		(PARTS OF FITTING 6H1993)
6H-1993	[1]	FITTING
1H-1363	[1]	ELBOW
5L-7705	[1]	TUBE
6H-3137	[1]	NUT
6H-3136	[1]	SLEEVE
		(PARTS OF FITTING 6H1993)
6H-1993	[1]	FITTING
7M-6843	[1]	GASKET
5L-7283	[1]	TUBE ASSEM. (R.H.)
5L-7282	[1]	TUBE ASSEM. (L.H.)
7M-6841	[1]	ADAPTER
5L-7290	[1]	FITTING
7H-3171	[3]	PLUG
6H-3137	[1]	NUT
6H-3136	[1]	SLEEVE
		(PARTS OF FITTING 6H1993)
6H-1993	[1]	FITTING
1H-1363	[1]	ELBOW
7M-6842	[1]	PLUNGER
7M-6855	[1]	BODY
7M-6124	[1]	SPRING
7M-6844	[1]	GASKET
1L-0909	[1]	ELBOW
6H-3137	[1]	NUT
6H-3136	[1]	SLEEVE
		(PARTS OF ELBOW 1L909)
5L-7287	[1]	TUBE
1D-4706	[4]	BOLT
3B-4506	[4]	LOCKWASHER
6H-1993	[1]	FITTING
6H-3137	[1]	NUT
6H-3136	[1]	SLEEVE
		(PARTS OF FITTING 6H1993)
1H-1363	[1]	ELBOW