AIR CLEANER Serial No. 66B1526, 66B1529 and 66B1532 to 66B1690 inclusive and 75B433, 436, 438, 440, 446, 451, 455, 462, 464, 470, 474, 475, 478, 480 to 537, 539 to 652, 654 to 658, 660 to 681 and 687 to 75B689 inclusive D398

AIR INLET AND EXHAUST SYSTEM

AIR CLEANER GP

0. AIR CLEANE
1. AIR CLEANE
2. 7L-6549 AIR CLEANE

TURBOCHARGER GP

3. TURBOCHARG
4. TURBOCHARG
5. 7L-4506 TURBOCHARG
6. 7L-4506 TURBOCHARG
7. TURBOCHARG
8. TURBOCHARG
9. 6L-2493 TURBOCHARG
0. INFORMATION

INDUSTRIAL ENGINE D398 INDUSTRIAL ENGINE 66B
D398 ENGINE 66B00700-02048 UE035710 D398 66B (1961)

AIR INLET AND EXHAUST SYSTEM

AIR CLEANER GP

AIR CLEANER

7L-6549 AIR CLEANER GP

6L-3851 AIR CLEANER GROUP

#UE0357100010

AIR CLEANER

AIR CLEANER
Serial No. 66B1526, 66B1529 and 66B1532 to 66B1690 inclusive and
75B433, 436, 438, 440, 446, 451, 455, 462, 464, 470, 474, 475, 478,
480 to 537, 539 to 652, 654 to 658, 660 to 681 and 687 to 75B689 inclusive

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Parts for your D398 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
6L-4712	[2]	BODY ASSEM.
5M-6214	[4]	PLUG
0L-1351	[2]	BOLT
3B-4506	[2]	LOCKWASHER
7L-0416	[2]	BRACE
0S-1595	[2]	BOLT (1.25" Long)
1A-1460	[2]	BOLT (2" Long)
1D-4719	[2]	NUT
0S-1588	[22]	BOLT
3B-4506	[22]	LOCKWASHER
0S-1594	[12]	BOLT
3B-4506	[12]	LOCKWASHER
6L-3437	[2]	RING
0S-1591	[2]	BOLT
3B-4506	[2]	LOCKWASHER
2M-5173	[2]	SEAL
6L-3439	[2]	ADAPTER
6L-9439	[1]	CHANNEL (Rear)
6L-9438	[1]	CHANNEL (Front)
0S-1571	[4]	BOLT
3B-4506	[4]	LOCKWASHER
6L-4680	[2]	SPRING
		(1 in each Body Assem. 6L4712)
6L-6573	[2]	RING
6L-6569	[2]	DIAPHRAGM
6L-4713	[2]	COVER ASSEM.
6L-4714	[2]	FILTER PANEL
1A-5964	[4]	BOLT
1D-4717	[4]	NUT
3B-4506	[4]	LOCKWASHER
6L-9437	[2]	BRACKET
0S-0509	[8]	BOLT
3B-4506	[8]	LOCKWASHER
4B-4278	[8]	WASHER
1J-7581	[12]	NUT
		(6 in each Body Assem. 6L4712)
0L-1351	[6]	BOLT
1D-4717	[6]	NUT
3B-4506	[6]	LOCKWASHER
6L-4691	[12]	CLIP
		(6 in each Cover Assem. 6L4713)
6L-4711	[12]	CLAMP ASSEM.
		(6 in each Body Assem. 6L4712)

#UE0357100011

AIR CLEANER

AIR CLEANER
Serial No. 66B1691 to 66B1780 inclusive and 75B538, 653, 659, 682 to 686 and 690 to 75B839 inclusive
Refer also to Pages 128 through 130 for special parts

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Parts for your D398 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	6L-4714	[2]	FILTER PANEL
2.	7L-6431	[2]	COVER ASSEM.
3.	6L-4711	[8]	CLAMP ASSEM.
4.	6L-4691	[2]	CLIP
			(One half each in 7L6431 Cover Assem.)
5.	0L-1351	[2]	BOLT
6.	1D-4717	[30]	NUT
7.	3B-4506	[34]	LOCKWASHER
8.	7L-6428	[2]	HOUSING ASSEM.
9.	5M-6214	[4]	PLUG
10.	7L-0895	[2]	BRACE
11.	0S-1595	[2]	BOLT
	1D-4719	[2]	NUT
12.	5L-6501	[2]	CLAMP
13.	7L-7160	[2]	HOSE
14.	4J-8536	[2]	CLAMP
15.	7L-6479	[16]	PLUG (Button)
16.	0S-0509	[16]	BOLT
17.	0T-0055	[8]	BOLT
	7L-6463	[8]	SPACER
18.	0S-1571	[4]	BOLT
19.	6L-9438	[2]	CHANNEL
20.	1A-5964	[4]	BOLT
21.	7L-6422	[4]	SUPPORT

#UE0357100012

7L-6549: AIR CLEANER GP

AIR CLEANER GP

AIR CLEANER (7L6549 N/S)
Effective with Serial No. 66B1781-Up and 75B840-Up
Refer also to Pages 128A, 128B, 129A through 129D & 130A

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Parts for your D398 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.		[4]	SUPPORT
2.		[2]	FILTER PANEL
3.		[2]	COVER ASSEM.
4.		[4]	BOLT
5.		[2]	BOLT
6.		[30]	NUT
7.		[34]	LOCKWASHER
8.		[2]	HOUSING ASSEM.
9.		[2]	PLUG
10.	C	[2]	BRACE
11.		[2]	BOLT
		[2]	NUT
12.		[16]	PLUG (Button)
13.		[16]	BOLT
14.		[8]	BOLT
15.		[4]	WASHER
		[8]	SPACER
16.		[4]	BOLT
17.		[2]	CHANNEL
	C		INDICATES CHANGE

#UE0357100013

TURBOCHARGERS

TURBOCHARGERS--Rear View
Serial No. 66B700 to 66B785, 66B787 and 66B788 inclusive
PART OF 4L1127 S.A.E. STANDARD, 5L2664 AND 5L7149 S.A.E. OPPOSITE ROTATION TURBOCHARGED ENGINE ARRANGEMENTS
2S2489 Turbocharger Assembly parts are shown on Page 24. Refer also to Pages 154 and 155 for special parts

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Parts for your D398 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
1B-5174	[1]	PLUG (PIPE)
5L-4182	[1]	EXTENSION
5L-4172	[1]	PIPE (EXHAUST)
1L-1118	[4]	FITTING
8F-8998	[4]	NUT
		(1 IN EACH FITTING 1L1118)
5L-3146	[1]	ELBOW
		(LEFT HAND)
1A-5964	[3]	BOLT
1D-4717	[3]	NUT
3B-4506	[3]	LOCKWASHER
9B-0887	[2]	PLUG (DRAIN)
0S-1587	[4]	BOLT
1B-5357	[4]	NUT
6L-2810	[1]	TUBE
0S-1587	[8]	BOLT
1B-5357	[8]	NUT
5L-3773	[1]	GASKET
2B-1738	[8]	LOCK
6L-2961	[4]	RING
6L-2960	[4]	RING (EXPANDER)
5L-9738	[2]	COUPLING
1D-4585	[6]	BOLT
3B-4510	[6]	LOCKWASHER
		(NOT SHOWN-FUEL PUMP GEAR COVER TO CYLINDER BLOCK AND FLYWHEEL HOUSING)
2S-2489 Y	[2]	TURBOCHARGER ASSEM.
		(SEE SEPARATE ILLUSTRATION)
9M-9939	[8]	LOCK
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)
4L-9169	[4]	GASKET
0L-2070	[3]	BOLT
1D-4717	[3]	NUT
3B-4506	[3]	LOCKWASHER
5L-3143	[2]	ELBOW
0S-1591	[32]	BOLT
1D-4717	[32]	NUT
3B-4506	[32]	LOCKWASHER
Y		SEPARATE ILLUSTRATION

#UE0357100014

TURBOCHARGERS

TURBOCHARGERS--REAR VIEW
SERIAL NO. 66B786 AND 66B789 TO 66B1414 INCLUSIVE
PART OF 4L1127, 5L2664 & 5L7149 ENGINE ARRANGEMENTS LISTED ON PAGE 5
2S2489 TURBOCHARGER PARTS ARE SHOWN ON PAGE 24. REFER ALSO TO PAGES 154 THRU 159 FOR SPECIAL PARTS

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Parts for your D398 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
1B-5174	[1]	PLUG (PIPE)
5L-4182	[1]	EXTENSION
5L-4172	[1]	PIPE (EXHAUST)
1L-1118	[4]	FITTING
8F-8998	[4]	NUT
		(1 IN EACH FITTING 1L1118)
5L-3146	[1]	ELBOW
		(LEFT HAND)
9B-0887	[2]	PLUG (DRAIN)
0S-1587	[4]	BOLT
1B-5357	[4]	NUT
6L-2810	[1]	TUBE
0S-1587	[8]	BOLT
1B-5357	[8]	NUT
5L-3773	[1]	GASKET
2B-1738	[8]	LOCK
6L-2961	[4]	RING
6L-2960	[4]	RING (EXPANDER)
5L-9738	[2]	COUPLING
2S-2489 Y	[2]	TURBOCHARGER ASSEM.
		(SEE SEPARATE ILLUSTRATION)
9M-9939	[8]	LOCK
1S-4295	[2]	GASKET
8M-2295	[8]	BOLT
8M-2296	[8]	NUT
6L-2809	[1]	TUBE
6L-8167	[2]	SEAL
5L-3144	[2]	PIPE
6L-8166	[2]	SEAL
5L-3145	[1]	ELBOW (RIGHT HAND)
4L-9169	[4]	GASKET
5L-3143	[2]	ELBOW
0S-1591	[32]	BOLT
1D-4717	[32]	NUT
3B-4506	[32]	LOCKWASHER
Y		SEPARATE ILLUSTRATION

#UE0357100015

7L-4506: TURBOCHARGERS

TURBOCHARGERS

TURBOCHARGERS (7L4506 N/S)--Rear View
Serial No. 66B1415 to 66B1780 inclusive
PART OF 4L1127 S.A.E. STANDARD 5L2664 AND 5L7149 S.A.E. OPPOSITE STANDARD ENGINE ROTATION TURBOCHARGED ENGINE
ARRANGEMENTS. 2S2489 Turbocharger parts are shown on Page 24. Refer also to Pages 154 through 155 for special parts

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Parts for your D398 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
1B-5174	[1]	PLUG (PIPE)
5L-4182	[1]	EXTENSION
5L-4172	[1]	PIPE (EXHAUST)
1L-1118	[4]	FITTING
8F-8998	[4]	NUT
		(1 IN EACH FITTING 1L1118)
6L-2810	[1]	TUBE
9B-0887	[2]	PLUG (DRAIN)
0S-1587	[4]	BOLT
1B-5357	[4]	NUT
0S-1587	[8]	BOLT
1B-5357	[8]	NUT
5L-3773	[1]	GASKET
2B-1738	[8]	LOCK
6L-2961	[4]	RING
6L-2960	[4]	RING (EXPANDER)
5L-9738	[2]	COUPLING
2S-2489 Y	[2]	TURBOCHARGER ASSEM.
		(SEE SEPARATE ILLUSTRATION)
9M-9939	[8]	LOCK
1S-4295	[2]	GASKET
8M-2295	[8]	BOLT
8M-2296	[8]	NUT
8L-5975	[1]	TUBE
Y		SEPARATE ILLUSTRATION

#UE0357100016

7L-4506: TURBOCHARGERS

TURBOCHARGERS

TURBOCHARGERS (7L4506 N/S)--Rear View
Serial No. 66B1781-Up
PART OF 4L1127 S.A.E. STANDARD 5L2664 AND 5L7149 S.A.E. OPPOSITE STANDARD ENGINE ROTATION TURBOCHARGED ENGINE
ARRANGEMENTS. 2S2489 Turbocharger parts are shown on Page 24. Refer also to Pages 154B and 155 for special parts

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Parts for your D398 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
1B-5174	[1]	PLUG (PIPE)
5L-4182	[1]	EXTENSION
5L-4172	[1]	PIPE (EXHAUST)
1L-1118	[4]	FITTING
8F-8998	[4]	NUT
		(1 IN EACH FITTING 1L1118)
6L-2810	[1]	TUBE
9B-0887	[2]	PLUG (DRAIN)
0S-1587	[4]	BOLT
1B-5357	[4]	NUT
0S-1587	[8]	BOLT
1B-5357	[8]	NUT
5L-3773	[1]	GASKET
2B-1738	[8]	LOCK
6L-2961	[4]	RING
6L-2960	[4]	RING (EXPANDER)
5L-9738	[2]	COUPLING
4J-8536	[2]	CLAMP
7L-7160	[2]	HOSE
4L-7932	[2]	CLAMP
9M-9939	[8]	LOCK
1S-4295	[2]	GASKET
8M-2295	[8]	BOLT
8M-2296	[8]	NUT
2S-2489 Y	[2]	TURBOCHARGER ASSEM.
		(SEE SEPARATE ILLUSTRATION)
8L-5975	[1]	TUBE
Y		SEPARATE ILLUSTRATION

#UE0357100017

TURBOCHARGERS

TURBOCHARGERS--Rear View
Serial No. 75B1 to 75B95 inclusive
PART OF 6L4984 S.A.E. STANDARD, 5L2664 AND 5L7149 S.A.E. OPPOSITE ROTATION TURBOCHARGED ENGINE ARRANGEMENTS
1S9489 Turbocharger Assembly parts are shown on Page 25

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Parts for your D398 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
1B-5174	[1]	PLUG (PIPE)
5L-4182	[1]	EXTENSION
5L-4172	[1]	PIPE (EXHAUST)
1L-1118	[4]	FITTING
8F-8998	[4]	NUT
		(1 IN EACH FITTING 1L1118)
5L-3146	[1]	ELBOW
		(LEFT HAND)
5L-9995	[1]	SUPPORT ASSEM. (RIGHT HAND)
5L-9996	[1]	SUPPORT ASSEM.
		(LEFT HAND)
6L-2810	[1]	TUBE
0S-1587	[8]	BOLT
1B-5357	[8]	NUT
5L-3773	[1]	GASKET
2B-1738	[8]	LOCK
6L-2960	[4]	RING
5L-9738	[2]	COUPLING
6L-2961	[4]	RING
4B-4845	[2]	PLUG (DRAIN)
0S-1587	[4]	BOLT
1B-5357	[4]	NUT
5L-9855	[4]	PLATE
0S-1590	[4]	BOLT
1D-4717	[4]	NUT
9M-1367	[4]	LOCK
9M-9939	[8]	LOCK
1S-4295	[2]	GASKET
8M-2295	[8]	BOLT
8M-2296	[8]	NUT
6L-2809	[1]	TUBE
1S-9489 Y	[2]	TURBOCHARGER ASSEM.
		(SEE SEPARATE ILLUSTRATION)
4L-8337	[2]	SEAL
5L-3144	[2]	PIPE
5H-7704	[2]	SEAL
5L-3145	[1]	ELBOW (RIGHT HAND)
4L-9169	[4]	GASKET
5L-9854	[2]	TRUNNION
0L-1169	[6]	BOLT
3B-4510	[6]	LOCKWASHER
5L-3143	[2]	ELBOW
0S-1591	[32]	BOLT
1D-4717	[32]	NUT
3B-4506	[32]	LOCKWASHER
Y		SEPARATE ILLUSTRATION

#UE0357100018

TURBOCHARGERS

TURBOCHARGERS--REAR VIEW
SERIAL NO. 75B96 TO 75B374 INCLUSIVE
PART OF 6L4984, 5L2664 AND 5L7149 ENGINE ARRANGEMENTS LISTED ON PAGE 5
1S9489 TURBOCHARGER PARTS ARE SHOWN ON PAGE 25

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Parts for your D398 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
1B-5174	[1]	PLUG (PIPE)
5L-4182	[1]	EXTENSION
5L-4172	[1]	PIPE (EXHAUST)
1L-1118	[4]	FITTING
8F-8998	[4]	NUT
		(1 IN EACH FITTING 1L1118)
5L-3146	[1]	ELBOW
		(LEFT HAND)
9B-0887	[2]	PLUG (DRAIN)
0S-1587	[4]	BOLT
1B-5357	[4]	NUT
6L-2810	[1]	TUBE
0S-1587	[8]	BOLT
1B-5357	[8]	NUT
5L-3773	[1]	GASKET
2B-1738	[8]	LOCK
6L-2960	[4]	RING
5L-9738	[2]	COUPLING
6L-2961	[4]	RING
1S-9489 Y	[2]	TURBOCHARGER ASSEM.
		(SEE SEPARATE ILLUSTRATION)
9M-9939	[8]	LOCK
1S-4295	[2]	GASKET
7L-3195	[8]	BOLT
8M-2296	[8]	NUT
6L-2809	[1]	TUBE
4L-8337	[2]	SEAL
5L-3144	[2]	PIPE
5H-7704	[2]	SEAL
5L-3145	[1]	ELBOW (RIGHT HAND)
4L-9169	[4]	GASKET
5L-3143	[2]	ELBOW
0S-1591	[32]	BOLT
1D-4717	[32]	NUT
3B-4506	[32]	LOCKWASHER
Y		SEPARATE ILLUSTRATION

#UE0357100019

6L-2493: TURBOCHARGER GP

TURBOCHARGER GP

TURBOCHARGERS (6L2493 N/S)--Rear View
Serial No. 75B375 to 75B839 inclusive
PART OF 6L4984 S.A.E. STANDARD AND 5L7149 S.A.E. OPPOSITE STANDARD ENGINE ROTATION TURBOCHARGED ENGINE
ARRANGEMENTS. 1S9489 Turbocharger parts are shown on Page 25. Refer also to Pages 156 through 157B for special parts

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Parts for your D398 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1B-5174	[1]	PLUG
2.	6L-2960	[4]	RING
3.	5L-9738	[2]	COUPLING
4.	6L-2961	[4]	RING
5.	9M-9939	[8]	LOCK
6.	1S-9489 Y	[2]	TURBOCHARGER ASSEM.
			(See Separate Illustration)
7.	7L-3195	[8]	BOLT
	8M-2296	[8]	NUT
8.	6L-2810	[1]	TUBE
9.	1S-4295	[2]	GASKET
10.	5L-4172	[1]	PIPE (Exhaust)
11.	9B-0887	[2]	PLUG (Drain)
12.	0S-1587	[12]	BOLT
	1B-5357	[12]	NUT
13.	8L-5975	[1]	TUBE
14.	1L-1118	[4]	FITTING
	8F-8998	[4]	NUT
			(1 in each 1L1118 Fitting)
15.	2B-1738	[8]	LOCK
16.	5L-3773	[1]	GASKET
17.	5L-4182	[1]	EXTENSION
	Y		SEPARATE ILLUSTRATION