4I7377 INSTALLATION AR-ENGINE 312-A EXCAVATOR

Part No	Qty	Parts name
4I-7364 Y	[1]	RADIATOR GP-OIL COOLER &
4I-7368 Y	[1]	MOUNTING GP-ENGINE
		- OR -
114-8184 Y	[1]	MOUNTING GP-ENGINE
4I-7369 Y	[1]	LINES GP-DRAIN
4I-7370 Y	[1]	EXTENSION GP-EXHAUST
4I-7378 Y	[1]	LINES GP-AIR
4I-7381 Y	[1]	CLEANER GP-AIR
Y		SEPARATE ILLUSTRATION

#XEBP72010002

4I-7374: ENGINE AR

ENGINE AR

4I7374 ENGINE AR - PART 1 OF 2

XEBP72010002 XEBP7201

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Parts for your 312-A EXCAVATOR:

CATERPILLAR SIS

Part No	Qty	Parts name
5I-7807 Y	[1]	PAN GP-OIL
5I-7804 Y	[1]	CAMSHAFT GP-SINGLE
5I-7809 Y	[1]	CRANKSHAFT GP
5I-7906 Y	[1]	BLOCK GP-CYLINDER
5I-7800 Y	[1]	HEAD GP-CYLINDER
5I-7801 Y	[1]	MECHANISM GP-VALVE
5I-7802 Y	[1]	COVER GP-VALVE MECHANISM
5I-7762 Y	[1]	FLYWHEEL GP
5I-7899 Y	[1]	HOUSING GP-FLYWHEEL
5I-7763 Y	[1]	GEAR GP-FRONT
5I-7806 Y	[1]	HOUSING GP-FRONT
5I-7808 Y	[1]	PISTON GP-ROD &
		LUBRICATION SYSTEM
5I-7818 Y	[1]	FILTER GP-ENGINE OIL
		- OR -
5I-8102 Y	[1]	FILTER GP-ENGINE OIL
5I-7815 Y	[1]	LINES GP-ENGINE OIL
5I-7803 Y	[1]	BREATHER GP
Y		SEPARATE ILLUSTRATION

#XEBP72010003

4I-7374: ENGINE AR

ENGINE AR

4I7374 ENGINE AR - PART 2 OF 2

XEBP72010003 XEBP7201

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Parts for your 312-A EXCAVATOR:

CATERPILLAR SIS

Part No	Qty	Parts name
		COOLING SYSTEM
5I-7773 Y	[1]	PUMP GP-WATER
5I-7821 Y	[1]	LINES GP-WATER
5I-7817 Y	[1]	COOLER GP-ENGINE OIL
5I-7820 Y	[1]	FAN GP-SUCTION
		INTAKE AND EXHAUST SYSTEM
5I-7810 Y	[1]	MANIFOLD GP-INLET
5I-7812 Y	[1]	LINES GP-AIR
5I-7811 Y	[1]	MANIFOLD GP-EXHAUST
5I-7903 Y	[1]	TURBOCHARGER GP
5I-7816 Y	[1]	LINES GP-TURBOCHARGER OIL
5I-7814 Y	[1]	MUFFLER GP
		- OR -
5I-7913 Y	[1]	MUFFLER GP
		FUEL SYSTEM AND GOVERNOR
5I-7824 Y	[1]	SHUT-OFF GP-ELECTRICAL
5I-7822 Y	[1]	PUMP GP-FUEL INJECTION
5I-7954 Y	[1]	FILTER GP-FUEL
5I-7823 Y	[1]	LINES GP-FUEL
5I-7706 Y	[1]	NOZZLE GP-UNIT INJECTOR
		ELECTRICAL SYSTEM
5I-7716 Y	[1]	MOTOR GP-ELECTRIC STARTING
5I-7910 Y	[1]	MOUNTING GP-ALTERNATOR
5I-7982 Y	[1]	ALTERNATOR GP-CHARGING
		- OR -
5I-8085 Y	[1]	ALTERNATOR GP-CHARGING
Y		SEPARATE ILLUSTRATION

#XEBP72010004

5I-7800: CYLINDER HEAD GP

CYLINDER HEAD GP

5I7800 HEAD GP-CYLINDER (A)
Type 1

h42604e XEBP7201

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Parts for your 312-A EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5I-7836	[1]	HEAD AS-CYLINDER
2.	099-4388	[4]	CAP
3.	099-4410	[4]	PLUG
4.	5I-7729	[4]	GUIDE (INTAKE)
5.	5I-7635	[4]	GUIDE (EXHAUST)
6.	5I-4915	[16]	CAP
7.	5I-8012	[4]	INSERT (EXHAUST)
8.	5I-8011	[4]	INSERT (INTAKE)
9.	095-2038	[1]	WASHER
10.	5I-5591	[1]	PLUG
11.	5I-4916	[1]	PLUG
12.	5I-7718	[17]	BOLT
13.	5I-7835	[1]	GASKET
14.	5I-7583	[5]	CAP

#XEBP72010005

5I-7800: CYLINDER HEAD GP

CYLINDER HEAD GP

5I7800 HEAD GP-CYLINDER (A)
Type 2

h42580e XEBP7201

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Parts for your 312-A EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5I-8103 C	[1]	HEAD AS-CYLINDER
2.	099-4388	[4]	CAP
3.	5I-7505 C	[4]	PLUG
4.	5I-7729	[4]	GUIDE (INTAKE)
5.	5I-7635	[4]	GUIDE (EXHAUST)
6.	5I-4915	[16]	CAP
7.	5I-8012	[4]	INSERT (EXHAUST)
8.	5I-8011	[4]	INSERT (INTAKE)
9.	095-2038	[1]	WASHER
10.	5I-5591	[1]	PLUG
11.	5I-4916	[1]	PLUG
12.	5I-7583 C	[5]	CAP
13.	5I-7835	[1]	GASKET
14.	5I-7718 C	[17]	BOLT
	C		INDICATES CHANGE

#XEBP72010006

5I-7801: VALVE MECHANISM GP

VALVE MECHANISM GP

5I7801 MECHANISM GP-VALVE (A)

h39500e XEBP7201

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Parts for your 312-A EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5I-4921	[1]	BOLT
2.	5I-7720	[1]	PIPE
3.	5I-7622	[2]	RING
4.	2W-6047	[2]	WASHER
5.	5I-7590	[8]	ROCKER AS
6.	5I-7631	[1]	BUSHING
7.	094-9525	[1]	SCREW
8.	5I-4924	[1]	NUT
9.	5I-7722	[4]	BRACKET
10.	3B-4505	[8]	LOCKWASHER
11.	5I-5010	[4]	BOLT
12.	8T-4189	[4]	BOLT (20mm LONG)
13.	5I-7721	[3]	SPRING
14.	5I-7883	[1]	SHAFT AS-ROCKER
15.	094-4696	[1]	PLUG
16.	5I-7630	[8]	CAP
17.	5I-7719	[16]	COTTER (AVAILABLE IN SET WITH PAIR)
18.	5I-7625	[8]	RETAINER
19.	5I-7624	[8]	SEAL
20.	5I-7740	[8]	SPRING
21.	5I-7739	[4]	VALVE (EXHAUST)
22.	5I-7738	[4]	VALVE (INTAKE)

#XEBP72010007

5I-7906: CYLINDER BLOCK GP

CYLINDER BLOCK GP

5I7906 BLOCK GP-CYLINDER

h44062e XEBP7201

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Parts for your 312-A EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5I-7907	[1]	CRANKCASE AS
2.	095-2005	[2]	CAP
3.	3P-1896	[5]	PLUG
4.	096-3741	[5]	CAP
5.	5I-7528	[1]	BUSHING
6.	5I-7523	[4]	SLEEVE
7.	5I-7525	[1]	PLUG
8.	5I-7529	[1]	BUSHING
9.	095-2039	[1]	WASHER
10.	8T-4191	[1]	BOLT (16mm LONG)
11.	099-4420	[2]	PIN
12.	5I-7505	[5]	PLUG
13.	5I-7724	[2]	PIN
14.	5I-8009	[1]	BUSHING
15.	5I-7524	[2]	SEAL
16.	5I-7839	[1]	CAP SET-BEARING
			(UN-FINISHED PARTS)
17.	094-7115	[10]	BOLT
18.	6V-8236	[6]	PIN
19.	095-2011	[1]	CAP
20.	5I-7526	[4]	VALVE
21.	5I-7672	[1]	SHAFT AS
22.	095-0879	[1]	PIN
23.	5I-7588	[5]	BEARING SET (STD)
	5I-7784 A	[5]	BEARING SET (0.25mm US)
	5I-7785 A	[5]	BEARING SET (0.50mm US)
	5I-7786 A	[5]	BEARING SET (0.75mm US)
24.	5I-7654	[3]	PLATE (STD)
	5I-7787 A	[3]	PLATE (0.15mm OS)
	5I-7788 A	[3]	PLATE (0.30mm OS)
	5I-7789 A	[3]	PLATE (0.45mm OS)
25.	5I-8005	[1]	SWITCH
26.	5I-7636	[1]	EYE
27.	5I-7603	[1]	EYE
28.	8T-4179	[3]	BOLT (20mm LONG)
29.	096-2501	[3]	WASHER
30.	5I-7978	[1]	SHEET
31.	4D-7794	[1]	CLIP
32.	7X-2536	[1]	BOLT (14mm LONG)
33.	3B-4505	[1]	LOCKWASHER
	A		NOT PART OF THIS GROUP

#XEBP72010008

5I-7802: COVER GP-VALVE MECHANISM

COVER GP-VALVE MECHANISM

5I7802 COVER GP-VALVE MECHANISM
Type 1

h42616e XEBP7201

5I7802 COVER GP-VALVE MECHANISM Parts scheme

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Parts for your 312-A EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8T-4186	[4]	BOLT (40mm LONG)
2.	5I-7904	[1]	COVER
3.	5I-7905	[1]	GASKET
4.	4P-6445	[1]	PLATE
5.	4P-6422	[1]	FILM

#XEBP72010009

5I-7802: COVER GP-VALVE MECHANISM

COVER GP-VALVE MECHANISM

5I7802 COVER GP-VALVE MECHANISM
Type 2

h42617e XEBP7201

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Parts for your 312-A EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8T-4186	[4]	BOLT (40mm LONG)
2.	5I-8108	[1]	COVER AS
3.	5I-7905	[1]	GASKET
4.	4P-6445	[1]	PLATE
5.	4P-6422	[1]	FILM
6.	5I-7584	[1]	CAP

Information:

ENGINE ARRANGEMENT

ENGINE AR

Truck Engine News

Service Magazines, Engine News, and Truck Engine News Articles Moved from Dealer.cat.com to SISweb {0374, 1000, 7000}
2015/09/23

A New Visualization Service Procedure (VSP) is Now Used for Certain Publications {0374, 1000, 7000}
A New Visualization Service Procedure (VSP) is Now Used for Certain Publications {0374, 1000, 7000}

Changes to the Way Serial Numbers are Displayed in Truck Engine News {0374, 1000, 7000}
Changes to the Way Serial Numbers are Displayed in Truck Engine News {0374, 1000, 7000}

Engine News

Improved Registration Process for Retrofit Products {1000, 7000}
2011/04/15

Service Magazines, Engine News, and Truck Engine News Articles Moved from Dealer.cat.com to SISweb {0374, 1000, 7000}
2015/09/25

A New Visualization Service Procedure (VSP) is Now Used for Certain Publications {0374, 1000, 7000}
A New Visualization Service Procedure (VSP) is Now Used for Certain Publications {0374, 1000, 7000}

Changes to the Way Serial Numbers are Displayed in Engine News {0374, 1000, 7000}
Changes to the Way Serial Numbers are Displayed in Engine News {0374, 1000, 7000}

Procedure for Cleaning an Engine Lubrication System when Contaminated with Engine Coolant Containing Antifreeze {1000, 1348, 1395}
Procedure for Cleaning an Engine Lubrication System when Contaminated with Engine Coolant Containing Antifreeze {1000, 1348, 1395}

Special Instruction

Valve Installation for Scheduled Oil Sampling of Engine, Transmission, Hydraulics, and Steering{1000, 7000, 7542, 7542}
Valve Installation for Scheduled Oil Sampling of Engine, Transmission, Hydraulics, and Steering{1000, 7000, 7542, 7542}

Caterpillar DPF Installation and Operation Guide for Diesel Engines - California Only {1000, 1091}
Caterpillar DPF Installation and Operation Guide for Diesel Engines - California Only {1000, 1091}

Generation 3 DPFdm Diagnostic Module Installation Manual - California Only {1000, 1091, 7490}
Generation 3 DPFdm Diagnostic Module Installation Manual - California Only {1000, 1091, 7490}

Storage Procedure for Caterpillar Products {0355, 1000, 7000}
Storage Procedure for Caterpillar Products {0355, 1000, 7000}

Recommended Storage Procedures For Hydraulic Excavators {0355, 1000, 1250, 7000}
Recommended Storage Procedures For Hydraulic Excavators {0355, 1000, 1250, 7000}

Instructions to Register the Retrofit and Submit Service Reporting {1000, 3000, 7000, 7570}
Instructions to Register the Retrofit and Submit Service Reporting {1000, 3000, 7000, 7570}

Guideline for Proper Gasket Handling and Installation {0599, 0648, 0681, 1000, 7555}
Guideline for Proper Gasket Handling and Installation {0599, 0648, 0681, 1000, 7555}

Piston Ring Gap Alignment Influence on High Blowby and Oil Consumption on All Engines {1000, 1215}
Piston Ring Gap Alignment Influence on High Blowby and Oil Consumption on All Engines {1000, 1215}

Differences in Appearance of Cat <SUP>®</SUP> Reman Parts when Compared to New Parts {1000, 1250}
Differences in Appearance of Cat ^® Reman Parts when Compared to New Parts {1000, 1250}

Introduction to Visualization Service Procedure (VSP) {0374, 1000, 7000}
Introduction to Visualization Service Procedure (VSP) {0374, 1000, 7000}

Technical Information Bulletin

A Recommendation for Initial Parts Stock Quantities Will Now Be Included in Service Letters{1000, 7000, 7751, 7752}
A Recommendation for Initial Parts Stock Quantities Will Now Be Included in Service Letters{1000, 7000, 7751, 7752}

Piston Ring Gap Alignment Influence on High Blowby and Oil Consumption on All Engines {1000, 1215}
Piston Ring Gap Alignment Influence on High Blowby and Oil Consumption on All Engines {1000, 1215}

368-9910 Multi-Tool Group with the 368-9911 Burn Rate Group Accuracy Issue{0599, 0701, 0702, 0706, 1000, 7610, 7620}
368-9910 Multi-Tool Group with the 368-9911 Burn Rate Group Accuracy Issue{0599, 0701, 0702, 0706, 1000, 7610, 7620}

Specifications

Engine Design
3064 and 3066 Engines for Caterpillar Built Machines

Tool Operating Manual

Using the 1U-8860 Large Engine Blowby Pickup Group and the 8T-2700 Blowby/Airflow Indicator{0781, 0785, 1000}
Using the 1U-8860 Large Engine Blowby Pickup Group and the 8T-2700 Blowby/Airflow Indicator{0781, 0785, 1000}

NEHS1111: 368-9910 Multi-Tool Group 3 {0599, 0701, 0702, 0706, 1000, 7610, 7620}
NEHS1111: 368-9910 Multi-Tool Group 3 {0599, 0701, 0702, 0706, 1000, 7610, 7620}

142-6893 Adjustable Lifting Bracket Group{0599, 0629, 0632, 0701, 0717, 1000, 4000, 7000}
142-6893 Adjustable Lifting Bracket Group{0599, 0629, 0632, 0701, 0717, 1000, 4000, 7000}

Systems Operation

General Information
3064 and 3066 Engines for Caterpillar Built Machines

Reuse And Salvage Guidelines

Reuse and Salvage for Mechanical Governor Groups in 3114, 3116, and 3126 Engines Equipped with Mechanical Unit Injectors (MUI) {0374, 1000, 1050, 1250, 1300}
Reuse and Salvage for Mechanical Governor Groups in 3114, 3116, and 3126 Engines Equipped with Mechanical Unit Injectors (MUI) {0374, 1000, 1050, 1250, 1300}

Reuse and Testing of Fuel Injection Pump Housing {0374, 1000, 1250, 1300}
Reuse and Testing of Fuel Injection Pump Housing {0374, 1000, 1250, 1300}

Contamination Control of Rebuilt Engines by Using a Particle Counting Process Patent Pending{1000, 1300}
Contamination Control of Rebuilt Engines by Using a Particle Counting Process Patent Pending{1000, 1300}

Filtration Procedure for Rebuilt Engines {0680, 0768, 1000, 1300}
Filtration Procedure for Rebuilt Engines {0680, 0768, 1000, 1300}

HVOF Identification and Polishing (Superfinishing){0674, 0679, 1000, 7000, 7562}
HVOF Identification and Polishing (Superfinishing){0674, 0679, 1000, 7000, 7562}

Cleaning Components with Carbon Dioxide (CO<SUB>2</SUB>) {0680, 1000, 7000}
Cleaning Components with Carbon Dioxide (CO₂) {0680, 1000, 7000}

Guideline for Proper Gasket Handling and Installation {0599, 0648, 0681, 1000, 7555}
Guideline for Proper Gasket Handling and Installation {0599, 0648, 0681, 1000, 7555}

Reuse and Salvage Guidelines Subscriptions {0374, 0599, 1000, 7000}
Reuse and Salvage Guidelines Subscriptions {0374, 0599, 1000, 7000}

Scrap Barrel Analysis {0374, 0599, 0700, 0701, 0738, 1000, 7000}
Scrap Barrel Analysis {0374, 0599, 0700, 0701, 0738, 1000, 7000}

Fundamentals of Plasma Transferred Wire Arc (PTWA) Spray for Reconditioning Components {0374, 0599, 0679, 1000}
Fundamentals of Plasma Transferred Wire Arc (PTWA) Spray for Reconditioning Components {0374, 0599, 0679, 1000}

Contamination Control Guidelines

Proper Oil Changing Procedures {1000, 1308, 1316, 1325, 1348, 3000, 3004, 3005, 3030, 3064, 3067, 3080, 3081, 4000, 4001, 4050, 4051, 5050, 5056, 5068, 5095}
Proper Oil Changing Procedures {1000, 1308, 1316, 1325, 1348, 3000, 3004, 3005, 3030, 3064, 3067, 3080, 3081, 4000, 4001, 4050, 4051, 5050, 5056, 5068, 5095}

Filtration Procedure for Rebuilt Engines {0680, 0768, 1000, 1300}
Filtration Procedure for Rebuilt Engines {0680, 0768, 1000, 1300}

Applied Failure Analysis

Failure Analysis Report - AFA Good Report {0374, 1000}
Failure Analysis Report - AFA Good Report {0374, 1000}

Reference Guide for a Proper Failure Analysis by CAT Dealer {0374, 1000}
Reference Guide for a Proper Failure Analysis by CAT Dealer {0374, 1000}

Product Evaluation Report - AFA Bad Report {0374, 1000}
Product Evaluation Report - AFA Bad Report {0374, 1000}

Information Release Memo

REMAN ENGINES DESIGNATED AND LABELED AS REPLACEMENT ENGINES
REMAN ENGINES DESIGNATED AND LABELED AS REPLACEMENT ENGINES

APPEARANCE CHANGE ON REMAN SHORT BLOCKS
APPEARANCE CHANGE ON REMAN SHORT BLOCKS

DISCONTINUATION OF REMAN 3044 / 3046 / 3064 / 3066 MHI ENGINES
DISCONTINUATION OF REMAN 3044 / 3046 / 3064 / 3066 MHI ENGINES

Testing and Adjusting

Troubleshooting
3064 and 3066 Engines for Caterpillar Built Machines

Engine Speed - Check
3064 and 3066 Engines for Caterpillar Built Machines

Technical Analysis

Technical Analysis 1 (TA1) Visual Inspection for Excavator {0372, 1000, 7000, 753T, 7565}
Technical Analysis 1 (TA1) Visual Inspection for Excavator {0372, 1000, 7000, 753T, 7565}

Disassembly and Assembly

Engine
3064 ENGINE SUPPLEMENT FOR 311 & 312 EXCAVATORS

Engine & Main Hydraulic Pump Separation
3064 ENGINE SUPPLEMENT FOR 311 & 312 EXCAVATORS

Service Magazine

Improved Engine Configuration Will Operate At Higher Altitudes{1000,1052,1062,1058}
1996/04/29

Solenoid Valve Assembly Is Improved In Pilot Lines Group {5479,5057}
1999/03/29

A New Screen In The TMI System Provides The Status Of Emission Certification Of Engines {1000}
2000/12/25

Caterpillar's Position On The Use Of Biodiesel Fuel In Caterpillar Engines {1000}
2012/09/17

A List Of Contacts For Caterpillar Product Support Is Available {1000, 4450, 7000}
2002/03/25

Proper Long Term Storage of Caterpillar Products {0355, 1000, 7000}
2009/04/27

Changes To Caterpillar Incident Reporting Field Use Form And DSN Incident Report Entry Screens {1000, 7000}
2013/04/17

Redesigned Fluid Sampling Valves Are Now Available for All Cat Products {7542}
2011/02/11

Improved Registration Process for Retrofit Products {1000, 3000, 7000, 7570}
2011/02/17

TA2 (Technical Analysis) Inspections are Now Available on SIS {0372, 1000, 7000, 753T, 7565}
2013/01/10

Service Magazines, Engine News, and Truck Engine News Articles Moved from Dealer.cat.com to SISweb {0374, 1000, 7000}
2015/09/21

A New Visualization Service Procedure (VSP) is Now Used for Certain Publications {0374, 1000, 7000}
A New Visualization Service Procedure (VSP) is Now Used for Certain Publications {0374, 1000, 7000}

Military Electronic Technician (Military ET) Is Now Available For Military Personnel {0374, 0376, 0599, 1000, 7000, 7610, 7620}
Military Electronic Technician (Military ET) Is Now Available For Military Personnel {0374, 0376, 0599, 1000, 7000, 7610, 7620}

Process to Print Collage Schematics {0374, 1000, 7000}
Process to Print Collage Schematics {0374, 1000, 7000}

Changes to the Way Serial Numbers are Displayed on Service Magazines {0374, 1000, 7000}
Changes to the Way Serial Numbers are Displayed on Service Magazines {0374, 1000, 7000}

A New Process Is Available to Request Service Animations for Certain Service Information Procedures {1000, 7000}
A New Process Is Available to Request Service Animations for Certain Service Information Procedures {1000, 7000}

Caterpillar Parts SIS Catalog 312-A :

4I-7374 ENGINE AR

5I-7800 CYLINDER HEAD GP

5I-7801 VALVE MECHANISM GP

5I-7906 CYLINDER BLOCK GP

5I-7802 COVER GP-VALVE MECHANISM