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Generac 004626-1, 004373-2 For internal engine parts use Engine Parts Manual P/N 0D3749

Models: 004626-1, 004373-2 004373-2, 004626-1

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Section 7 — Exploded Views and Parts Lists

(Model Nos. 004373-2 & 004626-1) Guardian Liquid-cooled 40 kW Generator

Engine Common Parts – Drawing No. 0A4304-L

ITEM	PART NO.QTY. DESCRIPTION				ITEM	PART NO.QTY. DESCRIPTION
1*	0A9046	1	ENGINE 4.3L GM	23		0A4241	1	PULLEY GROOVED IDLER
2	0A4084	2	MOUNT, ENGINE (R & L)	24		0C2885	1	PULLEY TENSIONER
3	0A4239	1	PULLEY CRANKSHAFT	25		0A5737C	1	SPACER DC ALTERNATOR 34MM
4	0A4240	1	PULLEY WATER PUMP	26		022131	8	WASHER FLAT 3/8-M10 ZINC
5	0A5640	1	SPACER FAN 50MM 4.3L (35KW UNITS ONLY)	27		077456	1	ADAPTOR M12-1.75 3/8 NPT
	0A5640A	1	SPACER FAN 62MM (45KW UNITS ONLY)	28		044117	1	BARBED STRAIGHT 3/8 NPT X 5/8
6	0A5639	1	FAN 17" REVRS ROT (35KW UNITS ONLY)	29		057823	1	CLAMP HOSE #10 .56 - 1.06
	0D3293A	1	FAN COOLING 22" DIA REVRS ROT	30		057448	1	HOSE 5/8 ID TYPE 3 SINGLE (12")
			(45KW UNITS ONLY)	31		022129	8	WASHER LOCK M8-5/16
7	077996	1	CAP HOSE	32		022142	4	SCREW HHC 5/16-18 X 3/4 G5 (45KW)
8	057823	1	CLAMP HOSE #10 .56 - 1.06	33		048614	4	SCREW HHC 5/16-24 X 3/4 G5
9	035579	1	BUSHING REDUCER 1/4 TO 1/8	34		022237	12	WASHER LOCK 3/8
10	037065	1	SCREW HHC 7/16-20 X 2-1/4 G5	35		029745	4	SCREW HHC 3/8-16 X 1 G5
11	022302	1	WASHER LOCK 7/16	36		042633	3	SCREW HHC 3/8-24 X 1 G5
12	0A8584	1	SWITCH OIL PRESSURE	37		033819	1	SCREW HHC 3/8-16 X 4 G5
13	052644	1	SPACER .5 X 1.5 X .25 STL/ZINC	38		022241	4	NUT HEX 3/8-16 STEEL
14	0A4278A	1	BELT SERPENTNE 72.5"	39		0A5768	1	WASHER FLAT HEAVY DUTY
15	0A4930A	1	HEAT SHIELD LEFT	40		046526	5	WASHER LOCK M10
16	0A4085	1	GASKET EXHAUST MANIFOLD	41		049814	2	SCREW HHC M10-1.5 X 25 G8.8
17	0A3927	1	MANIFOLD LEFT EXHAUST	42		0C3756	1	BOLT TENSIONER PULLEY
18	0C7947	2	BOLT U 3/8-16 X 2.50	43		045772	2	NUT HEX M10-1.5 G8 YEL CHR
19	0A1232	1	DC ALTERNATOR ASSEMBLY	44		0D2514	8	SPARK PLUG 5.7L GM
20	0A7801B	1	PULLEY PLOY-V 82 OD.	45		052259	1	WASHER FLAT M12
21	021928	1	BRACKET ALT. SUPPORT	46		055934D	1	CLAMP VINYL 1.06 X .406 Z
22	0C6239	1	BRACKET MOUNTING WELD ASSEMBLY	47		0A37970001 1		FILTER OIL

*For internal engine parts use Engine Parts Manual P/N 0D3749.

Generac® Power Systems, Inc. 37

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Generac 004626-1, 004373-2 For internal engine parts use Engine Parts Manual P/N 0D3749, Part No.Qty. Description

Contents

004373-2 40 kW/Single-phase w/ 200 Amp Transfer Switch Liquid-cooled, Prepackaged Standby GeneratorsPOWER SYSTEMS, INC SHOULD ATTEMPT INSTALLATIONThis symbol points out important safety informa CONTENTSOPERATION AND MAINTENANCE HOW TO OBTAIN SERVICETable of Contents Miscellaneous MaintenanceEngine DC Electrical System during operation. Exercise care near running gen- erators GENERAL HAZARDSDespite the safe design of this generator Parts of the generator are rotating and/or hotELECTRICAL HAZARDS FIRE HAZARDSEXPLOSION HAZARDS 1.1 UNPACKING/INSPECTION 1.4 PREPACKAGED TRANSFER SWITCHFigure 1.1 - Single-phase Generator AC Connection System The generator’s weight of more than 2,0001.6 MAIN CIRCUIT BREAKER 1.8 SPECIFICATIONS1.7.3 LOW COOLANT LEVEL SWITCH 1.7.1 LOW OIL PRESSURE SWITCH1.9.1 CONVERSION TO LP GAS VAPOR 1.9 FUEL REQUIREMENTS AND RECOMMENDATIONS1.8.1.1 Generator and Load Compatibility 1.8.2 ENGINE1.12.1 AIR FUEL RATIO CONTROLLER 1.11 COOLANT1.12 EMISSIONS CONTROL SYSTEM 1.10 ENGINE OIL RECOMMENDATIONSOTHER PUBLISHED STANDARDS STANDBY GENERATOR INSTALLATION2.1 BASIC STANDBY ELECTRIC SYSTEM NFPA STANDARDS2.2 EMERGENCY CIRCUIT ISOLATION METHOD 2.6 TRANSFER SWITCH START SIGNAL CONNECTIONS2.6.1 Pre-Packaged Type Switch 2.6.2 “GTS” Type Engineered Switch2.8 PREPARATION BEFORE START-UP 2.7 BATTERY INSTALLATIONDO NOT SMOKE when near batteries DO NOT cause flame or spark in battery area, and2.8.6 Belt Tension 2.8.2 Transfer Switch2.8.1 PRIOR TO INITIAL START-UP 2.8.3 Fuel System3.1 CONTROL CONSOLE COMPONENTS 3.2 USING THE AUTO/OFF/MANUAL SWITCH3.3 AUTOMATIC TRANSFER OPERATION With the switch set to AUTO, the engine may3.2.2 “OFF” POSITION 3.2.3 “MANUAL” POSITION4.1 CHECKING THE ENGINE OIL LEVEL Figure 3.3 - “Set Exercise” Switch on Control PanelIf you switch the Auto/Off/Manual switch is 3.6 WEEKLY EXERCISE CYCLE4.2.1 Engine Oil Recommendations 4.2.2 Oil and Filter Change Procedure4.3 CHANGING THE ENGINE AIR CLEANER 4.2 CHANGING THE ENGINE OIL AND FILTERFigure 4.4 - Setting the Spark Plug Gap 4.5 BATTERY MAINTENANCEBattery replacement Figure 4.3 - Engine Air Cleaner4.9 ENGINE COOLANT 4.10 MISCELLANEOUS MAINTENANCE 4.10.1 Cleaning the Generator4.7 OVERLOAD PROTECTION FOR ENGINE DC ELECTRICAL SYSTEM 4.8 DC FUSE4.11 OUT OF SERVICE PROCEDURE 4.11.1 Removal From Service 4.11.2 Return To Service4.10.2 Rodent Protection 4.12 SERVICE SCHEDULE ATTENTION It is recommended that all service workbe performed by your nearest Generac/Guardian Authorized Dealer CORRECTION 5.1 TROUBLESHOOTING GUIDEPROBLEM CAUSEModel No Schematic ControlGenerac Power Systems, Inc Electrical004373 22 Generac Power SystemsModel No. WiringDiagram SectionSection 6 - Electrical Data Power Systems, IncModel No. 004626-1 Guardian Schematic Control GeneracSection 6 -ElectricalData Generac Power Systems,IncSection 6 - Electrical Data Generac Power Systems, Inc26 Generac Power Systems, Inc Section 6 - Electrical Data Generac Power Systems, Inc004262-1 Guardian Wiring Diagram28 Generac Power Systems, Inc Panel - Drawing No120/240-V. 1-PHASE CUSTOMER CONNECTIONT2 T1 U N2 T N1 S Electrical Schematic - Lower Panel - Drawing No. 0D5997Model No. 004373-2 Guardian Liquid-cooled PANEL FACEPower Control Panel - Drawing No. 0D4995-CPART NO. QTY. DESCRIPTION PART NO. QTY. DESCRIPTION0D1523 Model No. 004626-1 Guardian Liquid-cooled 32 Generac Power Systems, IncNO USER SERVICEABLE PARTS Control Panel - Drawing No. 0D6978-ADESCRIPTION PART NO. QTYDESCRIPTION PART NO. QTY34 Generac Power Systems, Inc PART NO.QTYDESCRIPTION On Oil Pan DESCRIPTIONDESCRIPTION To Oil Drain36 Generac Power Systems, Inc 464031 33 PART NO.QTY. DESCRIPTION For internal engine parts use Engine Parts Manual P/N 0D3749Model Nos. 004373-2 & 004626-1 Guardian Liquid-cooled 40 kW Generator Engine Common Parts - Drawing No. 0A4304-L38 Generac Power Systems, Inc HARNESS 4.3L STD WIRE NOT SHOWN CONNECTOR COIL TO DISTRIBUTORHOUSING THERMOSTAT/WATER INLET 40KW GUARDIAN WIRE HARNESS NOTLEADS TO ENGINE FlLYWHEEL ADJUSTMENTENGINEROTATENOTDODURING THIS ADJUSTMENT STATORDESCRIPTION ASSEMBLY FAN W/PRESS DISC 10.75 XDESCRIPTION PART NO. QTY42 Generac Power Systems, Inc DESCRIPTIONDESCRIPTION KIT PART NO. 0D7947 Section 7 - Exploded Views and Parts ListsDESCRIPTION DESCRIPTIONMOTOR USE FASTENER LOCATED ON ALTERNATOR FAN SCROLLREGULATOR TO STEPPERDESCRIPTION PART NO. QTYDESCRIPTION PART NO. QTY46 Generac Power Systems, Inc QTY. DESCRIPTIONQTY. DESCRIPTION PART NO. QTY Section 7 - Exploded Views and Parts ListsPART NO. QTY DESCRIPTIONPump QTY. DESCRIPTIONLower Radiator To Water HoseTO ENGINE BLOCK TO STARTERSOLENOID BLACKSENSING WIREALT LEADS SENSING WIRE LEADSDECAL CUSTOMER CONNECTN FOR TS DESCRIPTIONDESCRIPTION DECAL REMOTE START CONNECTION52 Generac Power Systems, Inc Exhaust Muffler - Drawing No. 0D6976-A PART NO. QTY. DESCRIPTIONPART NO. QTY. DESCRIPTION Model No 004626-1 Guardian Liquid-cooled 40 kW GeneratorsCompartment 54 Generac Power Systems, IncDESCRIPTION DESCRIPTIONGenerac Power Systems, Inc Section 8 - NotesGuardian Liquid-cooled 40 kW Generators 56 Generac Power Systems, Inc Section 9 - Installation DrawingsRECOMMENDED FUEL/ELECTRICAL STUB-UPS SEE TOP VIEW Generac Power Systems, IncPREPACKAGED EMERGENCY AUTOMATIC STANDBY GENERATORS GENERAC POWER SYSTEMS TWO YEAR STANDARD WARRANTY FOR GUARDIANWARRANTY SCHEDULE GENERAC POWER SYSTEMS, INC