Generac 940 - Manuals - manualsarea.com

Page 3 - SERIES IMPACT 36 PLUS; TABLE OF CONTENTS; SERVICE

PART TITLE 1 THE AC GENERATOR 2 ENGINE MECHANICAL 3 GASOLINE FUEL SYSTEM 4 GASEOUS FUEL SYSTEM 5 ENGINE OIL & COOLING SYSTEM 6 ENGINE ELECTRICAL SYSTEM 7 TROUBLESHOOTING 8 SPECIFICATIONS & CHARTS SERIES IMPACT 36 PLUS TABLE OF CONTENTS SERVICE MANUAL

Page 5 - COMPUTER; Series Impact 36 Plus

Page 1 PART 1 GENERAL INFORMATION COMPUTER CONTROLLED VARIABLE SPEED RV GENERATORS Series Impact 36 Plus SECTION TITLE 1.1 GENERATOR FUNDAMENTALS 1.2 GENERATOR MAJOR COMPONENTS 1.3 OPERATIONAL ANALYSIS 1.4 INSULATION RESISTANCE 1.5 COMPONENTS TESTING 1.6 CONTROL PANEL 1.7 SHEET METAL

Page 6 - NOTES

Page 8 - Figure 5. Alternating Current Sine Wave

Section 1.1GENERATOR FUNDAMENTALS ALTERNATING CURRENT A simple generator consists of a coil of wires called aStator and a magnetic field called a Rotor. As theRotor's magnetic field cuts across the Stator coil, av o l t a g e i s i n d u c e d i n t o t h e S t a t o r w i n d i n g s . T h eamount ...

Page 9 - GENERATOR FUNDAMENTALS; Figure 6. Electrical Units; OHMS; REACTANCE IN AC CIRCUITS; Figure 8. Inductive Reactance

Section 1.1 GENERATOR FUNDAMENTALS Figure 6. Electrical Units OHM:The OHM is the unit of RESISTANCE. In every circuitthere is a natural resistance or opposition to the flowof electrons. When an EMF is applied to a completecircuit, the electrons are forced to flow in a singledirection rather than the...

Page 13 - Item; UPPER FAN HOUSING

Section 1.2 MAJOR GENERATOR COMPONENTS INTRODUCTION Major components of the generator proper are shownin Figure 1, below. External sheet metal and otherunrelated components are omitted from the drawingfor clarity. These parts are: Item Description 1 Upper Fan Housing 2 Upper Cooling Fan 3 Permanent ...

Page 15 - MAJOR GENERATOR COMPONENTS

Section 1.2 MAJOR GENERATOR COMPONENTS Figure 5. Schematic- Stator Windings Page 1.2-3

Page 20 - TEST ALL STATOR WINDINGS TO GROUND; TEST FOR SHORTS BETWEEN WINDINGS

Section 1.4INSULATION RESISTANCE TEST ALL STATOR WINDINGS TO GROUND Connect the ends of all Stator leads together. Makesure none of the leads are touching any terminal orany part of the generator.Connect one Tester probe to the junction of all Statorleads; the other Tester probe to a clean frame gro...

Page 27 - Figure 1. Exploded View of Control Panel

Section 1.6 CONTROL PANEL CONSTRUCTION The panel is constructed of sheet metal and includesa panel box, a panel back cover and a front controlpanel. The panel box is retained to an engine-genera-tor divider plate by five M5 screws. Removal of thesescrews will permit the panel to be removed from thed...

Page 29 - Impact Plus Generator

Section 1.7 SHEET METAL See "Exploded View of Sheet Metal" on next page. ADIVIDER PLATE (Item 1) separates the AC generatorcomponents from the engine. The engine Itself isenclosed by a BASE HOUSING WRAPPER (Item 4),a FRAME (Item 24), and a BELLY PAN (Item 23).These components are sealed by m...

Page 30 - EXPLODED VIEW OF SHEET METAL (GASOLINE UNITS)

Section 1.7SHEET METAL Page 1.7-2 EXPLODED VIEW OF SHEET METAL (GASOLINE UNITS)

Page 35 - SECTION

PART 2 ENGINE MECHANICAL COMPUTER CONTROLLED VARIABLE SPEED RV GENERATORS Series Impact 36 Plus SECTION TITLE 2.1 GENERAL INFORMATION 2.2 VALVE TRAIN 2.3 PISTON, RINGS, CONNECTING ROD 2.4 CRANKSHAFT & CAMSHAFT

Page 37 - Figure 1. Intake Stroke

Section 2.1 GENERAL INFORMATION INTRODUCTION The engine used on Impact 36 plus Series recreationalvehicle AC generators is a Generac Series GV-220,vertical shaft, single cylinder, overhead valve type.These engines are not equipped with a mechanicalengine governor. Instead. variable engine speeds are...

Page 38 - RECOMMENDED FUELS; carbon formation in the engine.; RECOMMENDED ENGINE OIL

Section 2.1GENERAL INFORMATION TIMING:Valve timing and ignition timing must be preciselycontrolled if the engine is to operate properly and effi-ciently. Intake and exhaust valves must open andclose in a precise timed sequence if the four strokesare to occur. Ignition must occur at exactly the corre...

Page 39 - THE UNIT IS NOW READY FOR SERVICE.

Section 2.1 GENERAL INFORMATION Engine crankcase oil capacity without oil filter changeis about 29 fluid ounces (850m.Engine crankcase oil capacity (with oil filter change) isabout 1 U.S. quart (946m1).Change engine oil and the oil filter after the first eight(8) hours of operation. Thereafter, chan...

Page 40 - NOTE 1:- Item 36 Includes valve seats and

Section 2.1GENERAL INFORMATION ITEM QTY DESCRIPTION 1 1 Connecting Rod 2 1 Piston Pin 3 1 Piston Ring Set (STD) 4 2 1/4" Pipe Plug 5 1 Breather Cover 6 1 Piston 7 2 Piston Pin Retainer 8 1 Crankshaft & Gear Assembly 10 1 Oil Breather Separator 11 1 Crankcase Assembly 12 1 Sleeve Bearing 13 2...

Page 41 - Figure 1. Valve Train Components; VALVE COMPONENTS REMOVAL; Figure 2. Removal of Rocker Arm over

Section 2.2 VALVE TRAIN VALVE TRAIN COMPONENTS Valve train components are listed below and shown inFigure 1, below. ITEM QTY DESCRIPTION1 2 Tappet 2 2 Push Rod 3 2 Rocker Arm 4 2 Pivot Ball Stud 5 2 Rocker Arm Jam Nut 6 1 Push Rod Guide Plate 7 2 Valve Spring 8 2 Valve Spring Retainer 9 2 Valve Spri...

Page 42 - VALVE SERVICE

Section 2.2VALVE TRAIN Figure 4. Cylinder Head Removal DANGER! ALWAYS WEAR SAFETY GLASSESWHEN REMOVING THE VALVE SPRINGS. 5. See Figure 5, next page. Hold the valve with your fingers while compressing the spring with your thumb, then proceed as fol-lows: a. While the spring is compressed, slide the ...

Page 43 - VALVE TRAIN; VALVE COMPONENTS INSTALLATION

Section 2.2 VALVE TRAIN NOTE: After the valve guides have been over-sized, be sure to recut the valve seats so they willalign with the guides. Figure 8. Valve Guides VALVE TAPPETS:Valve tappets can be removed during removal of theengine camshaft. Intake and exhaust valve tappetsare identical. Howeve...

Page 44 - ADJUSTING VALVE CLEARANCE

Section 2.2VALVE TRAIN VALVE COMPONENTS INSTALLATION (CONTINUED) 3. Install the valve spring washers, valve springs and valve spring retainers over the valve guides. a. Hold the valve with your fingers and use your thumbs to compress the spring. b. When the spring is compressed sufficiently, slide t...

Page 45 - ROCKER ARM COVER INSTALLATION

Section 2.2 VALVE TRAIN VALVE CLEARANCE GV-220 ENGINE INTAKE VALVE: 0.001-0.0022 inch (0.03-0.056mm) EXHAUST VALVE: 0.0018-0.003 inch (0.046-0.07mm) Adjust the valve clearance as follows: 1. Rotate the crankshaft until the piston is at top dead center (TDC) of its compression stroke. Both valves sho...

Page 48 - PISTON RINGS

Section 2.3PISTON, RINGS, CONNECTING ROD Figure 4. Piston Minor Diameter PISTON MINOR DIAMETER GV-220) Design DIAMETER: 2.747-2.748 inch (69.789-69.809mm) Figure 5. Piston Major Diameter PISTON MAJOR DIAMETER GV-220) Design DIAMETER: 2.753-2.754 inch (69.939-69.959mm) NOTE: Always apply engine oil t...

Page 50 - CYLINDER SERVICE

Section 2.3PISTON, RINGS, CONNECTING ROD hammer handle to gently tap the piston down into the cylinder. 4. Check that the connecting rod's large diameter bearing is coat- ed with oil, as well as the crank throw and the connecting rodcap. 5. Guide the large end of the connecting rod onto the cranksha...

Page 52 - CAMSHAFT INSPECTION; Figure 4. Points to Check on Camshaft; CRANKSHAFT INSPECTION; • Inspect timing gear teeth for chipping or cracking. If

Section 2.4CRANKSHAFT AND CAMSHAFT CAMSHAFT INSPECTION Carefully inspect the entire camshaft for wear, nicks,damage. All areas indicated in Figure 4 should bechecked for wear. Figure 4. Points to Check on Camshaft The following should be measured carefully to checkfor wear: MAIN CAMSHAFT BEARING DIA...

Page 53 - INSTALLING THE CRANKSHAFT

Section 2.4 CRANKSHAFT AND CAMSHAFT Figure 7. Bearing Bore in Crankcase Cover COMPRESSION RELEASE MECHANISM A mechanical compression release is provided on thecamshaft. See Figure 7. A PIN extends over the camlobe. This PIN pushes on the tappet, to lift the valveand relieve compression for easier cr...

Page 57 - Figure 1. Sharing a Fuel Supply Tank; EVAPORATION CONTROL SYSTEMS

Section 3.1 INTRODUCTION TO FUEL SYSTEM GENERAL Recreational vehicle generators equipped with agasoline fuel system are usually installed so that theyshare the fuel supply tank with the vehicle engine.When this is done, the generator Installer must nevertee off the vehicle fuel supply line to delive...

Page 58 - Figure 2. Typical Gasoline Fuel System

Section 3.1INTRODUCTION TO FUEL SYSTEM altered. Service technicians working on the RV gener-ator systems must not do anything that might changethe vehicle fuel system design. Figure 2. Typical Gasoline Fuel System Page 3.1-2

Page 63 - Figure 2. Carburetor Sectional View

Section 3.4 CARBURETOR GENERAL INFORMATION Proper engine performance depends on the carbure-tion system. The use of clean, fresh gasoline and awell-maintained air cleaner are extremely important toproper operation, as well as engine reliability andpower.Most causes of carburetion problems are relate...

Page 66 - Figure 7. Carburetor Removal

Section 3.4CARBURETOR Page 3.4-4 Figure 7. Carburetor Removal

Page 67 - Figure 1. Choke Solenoid Parts; OPERATION; Figure 2. Choke Adjustment

Section 3.5 AUTOMATIC CHOKE GENERAL The GV-220 vertical shaft engines are equipped withan automatic choke. A choke solenoid is attached tothe carburetor choke shaft by means of a choke con-trol link. Solenoid operation is controlled by the A6060circuit board. The circuit board energizes and de-energ...

Page 70 - TESTING THE STEPPER MOTOR

Section 3.6SPEED CONTROL SYSTEM ELECTRICAL CONNECTIONS BROKEN:If one or more of the electrical connections to thestepper motor are broken or disconnected, either ofthe following might occur: 1. The stepper motor may not turn at all. 2. The stepper motor may turn erratically. If the stepper motor doe...

Page 75 - Figure 2. Gas Carburetion Diagram; LEAKAGE TESTING

Section 4.1 INTRODUCTION TO FUEL SYSTEM GASEOUS CARBURETION Gas at positive pressure is delivered from the fuellockoff solenoid to the inlet of the regulator (about 11-14 inches of water).As the engine piston moves downward on its intakestroke, air is drawn into the area above the pistonthrough the ...

Page 77 - QTY DESCRIPTION; LP Gas Regulator; ADJUSTMENTS; Figure 2. LP Gas Regulator; TESTING THE FUEL LOCKOFF SOLENOID

Section 4.2 SHUTOFF VALVE AND REGULATOR GENERAL See Figure 1. The fuel shutoff valve (lockoff solenoid)and the secondary regulator are retained to a flatmounting bracket which, in turn, mounts to the gener-ator base cover. The fuel lockoff solenoid is retainedto the mounting bracket by means of a u-...

Page 78 - Figure 3. Fuel Lockoff Solenoid

Section 4.2SHUTOFF VALVE AND REGULATOR TEST PROCEDURE: 1. Set a volt-ohm-milliammeter (VOM) to read battery voltage (12 VDC). 2. Connect the VOM test leads across Wire 14 (Red) at the sole- noid and a clean frame ground. 3. Set the fuel primer switch onthe generator panel to its ON position. a. The ...

Page 84 - Figure 3. Oil Pump Check Points; CRANKSHAFT OIL SEALS; Figure 4. Crankshaft Oil Seals; PRESSURE RELIEF VALVE; Figure 5. Oil Pressure Relief Valve; BREATHER ASSEMBLY

Section 5.1ENGINE OIL SYSTEM OIL PUMP (CONTINUED) INSPECTION (CONT'D):Inspect the outer drive pins on the camshaft. Look forbreakage, bending, other damage. These are roll pinswhich can be removed and replaced. Figure 3. Oil Pump Check Points CRANKSHAFT OIL SEALS An oil seal is provided in the crank...

Page 85 - ENGINE OIL SYSTEM; Figure 6. Breather Assembly; OIL SUMP; OIL FILTER SUPPORT; Figure 7. Oil Filter Support

Section 5.1 ENGINE OIL SYSTEM The breather serves to maintain a partial vacuum inthe engine crankcase, to prevent oil from being forcedpast oil seals, gaskets or rings.See Figure 6. A reed type breather valve permitsexcess pressure to be vented out of the crankcasea n d t o a t m o s p h e r e t h r...

Page 87 - Figure 1 — Air Flow Through Engine-Generator; COOLING AIR INLET OPENINGS; Figure 2 — Air Inlet in Compartment Door; • By providing an opening in the vehicle skirt and space

Section 5.2 ENGINE COOLING SYSTEM It is absolutely essential that an adequate flow of airfor cooling, ventilating and engine combustion be sup-plied to the generator set. Without sufficient air flow,the engine-generator quickly overheats. Such over-heating can cause serious operating difficulties an...

Page 88 - COMPENSATING FOR RESTRICTIONS

Section 5.2ENGINE COOLING SYSTEM Figure 3 — Suspended Mount Inlet Door Figure 4. Ductwork Figure 5 — Air Inlet in Vehicle Skirt COMPENSATING FOR RESTRICTIONS Such materials as screening, louvers, or expandedmetal can restrict the free flow of air. Compensate forthis restriction by making the actual ...

Page 91 - Engine cranking system components

Section 6.1 ENGINE DC CONTROL SYSTEM GENERAL The engine DC control system consists of all thoseelectrical components required for cranking, startingand running the engine. These components includethe following: 1. Engine cranking system components a. A 12 VDC battery. b. A Start-Run-Stop Switch (SW1...

Page 92 - HOW IT WORKS

Section 6.1ENGINE DC CONTROL SYSTEM HOW IT WORKS ENGINE NOT RUNNING: 1. Battery output (12VDC) is available to the contacts of a starter contactor (SC). However, the contacts are open. 2. Battery output is delivered to Terminals J2 - 5 of the A6060 cir- cuit board, via Wire 13, a 15 amp fuse, and Wi...

Page 93 - Figure 2. Receptacle J2; PIN; — Not

Section 6.2 A6060 CIRCUIT BOARD GENERAL The A6060 circuit board controls all phases of engineoperation including cranking, starting, running andshutdown.The circuit board interconnects with other compo-nents of the engine electrical system.The board Is powered by fused 12 VDC battery out-put, availa...

Page 94 - CIRCUIT BOARD CONNECTIONS

Section 6.2A6060 CIRCUIT BOARD CIRCUIT BOARD CONNECTIONS (CONTINUED) RECEPTACLE J4:The A6060 circuit board mounts a 3-pin receptacleJ4. A 3-pin connector plug connects to the A6060.This harness then connects to Bridge Rectifier. DCLink Voltage is supplied to the circuit board for volt-age sensing. R...

Page 95 - CABLE LENGTH

Section 6.3 ENGINE CRANKING SYSTEM INTRODUCTION COMPONENTS:The engine cranking system is shown schematicallyin Figure 1, below. The system consists of the follow-ing components:• A 12 volts Battery.• A Start-Run-Stop Switch (SW1).• A Starter Contactor (SC).• A Starter Motor (SM1). • A6060 Circuit Bo...

Page 96 - STARTER CONTACTOR

Section 6.3ENGINE CRANKING SYSTEM BATTERY (CONTINUED) TESTING A BATTERY:The best method of testing a battery is with an auto-motive type battery hydrometer. Some "MaintenanceFree" batteries cannot be tested with a hydrometer.Most batteries can be tested for both STATE OFCHARGE and CONDITION ...

Page 97 - ENGINE CRANKING SYSTEM; Figure 3. Starter Contactor; STARTER MOTOR; Figure 4. Starter Motor

Section 6.3 ENGINE CRANKING SYSTEM Figure 3. Starter Contactor STARTER MOTOR DESCRIPTION:The Starter Motor is a 12 volts negative ground type.It is capable of operating on heavy duty battery inputat temperatures as low as -30 F. without any signifi-cant change in performance. Its pinion is a 10-toot...

Page 99 - Figure 1. Ignition Cage Assembly; IGNITION SENSOR; Figure 2. Ignition Sensor; IGNITION MODULE

Section 6.4 ENGINE IGNITION SYSTEM INTRODUCTION The engine ignition system consists of the followingmajor components:• Ignition Cage Assembly.• Ignition Sensor Assembly.• Ignition Module (IM).• Ignition Coil (IC).• Spark Plug (SP1). IGNITION CAGE ASSEMBLY An IGNITION CAGE ASSEMBLY is factory install...

Page 100 - Figure 4. Ignition Module; IGNITION COIL; Figure 5. Ignition oil; SPARK PLUG; Figure 6. Setting park Plug Gap; SUMMARY OF OPERATION; Figure 7. Ignition System Diagram; IGNITION TIMING; Ignition timing is fixed and non-adjustable.; TESTING THE SYSTEM

Section 6.4ENGINE IGNITION SYSTEM IGNITION MODULE (CONTINUED) Figure 4. Ignition Module IGNITION COIL Primary ignition voltage (12 VDC) is delivered fromthe Ignition Module to the Ignition Coil. The Coilboosts the voltage and delivers the high voltage tothe engine Spark Plug. Figure 5. Ignition oil ...

Page 101 - ENGINE IGNITION SYSTEM

Section 6.4 ENGINE IGNITION SYSTEM TESTING FOR SPARK:To test the ignition system, a suitable spark testermay be used. Such spark testers are commerciallyavailable. Test the system as follows: Warning! Do NOT use a screwdriver to test forspark. Personal injury or damage to equip-ment may result. 1. D...

Page 103 - Figure 1. Engine Protective Circuit

Section 6.5 SHUTDOWN FEATURES GENERAL The engine mounts an Oil Pressure Switch (LOP) andan Oil Temperature Switch (HTO). These two switch-es, in conjunction with the A6060 circuit board, pro-tect the engine against (a) low oil pressure and (b)high oil temperature.The engine protective circuit Is sho...

Page 104 - ADDITIONAL SHUTDOWN FEATURES

Section 6.5SHUTDOWN FEATURES ADDITIONAL SHUTDOWN FEATURES The A6060 Circuit Board also incorporates the follow-ing protective shutdown features: LOSS OF 9-WIRE CABLE SIGNALS TO INVERTER:On units with A6060 Circuit Board Revision “D” orhigher software, the generator will shutdown if the 9-wire cable ...

Page 105 - Figure 1. Remote Panel Receptacle; DESCRIPTION

Section 6.6 OPTIONAL REMOTE PANEL GENERAL An optional remote-mounted Start-Stop panel is avail-able. This panel will permit the generator to be startedand stopped from some convenient remote location inthe recreational vehicle. REMOTE PANEL CABLES The generator is equipped with a 4-pin receptacle fo...

Page 107 - SHOOTING; SECTION TITLE

PART 7 TROUBLE- SHOOTING COMPUTER CONTROLLED VARIABLE SPEED RV GENERATORS Series Impact 36 Plus SECTION TITLE 7.1 GENERATOR & SPEED CONTROL 7.2 ENGINE DC CONTROL SYSTEM/ AC TROUBLESHOOTING

Page 113 - ENGINE DC CONTROL SYSTEM / AC TROUBLESHOOTING

Section 7.2 ENGINE DC CONTROL SYSTEM / AC TROUBLESHOOTING Page 7.2-3 PROBLEM 3 - ENGINE CRANKS BUT WILL NOT START (CONTINUED)

Page 114 - PROBLEM 4 - ENGINE STARTS HARD AND RUNS ROUGH

Section 7.2ENGINE DC CONTROL SYSTEM / AC TROUBLESHOOTING Page 7.2-4 PROBLEM 4 - ENGINE STARTS HARD AND RUNS ROUGH

Page 118 - PROBLEM 10 - NO AC OUTPUT

Section 7.2ENGINE DC CONTROL SYSTEM / AC TROUBLESHOOTING Page 7.2-8 PROBLEM 10 - NO AC OUTPUT

Page 120 - a. And if priming function does not work, go to; TEST 2- CHECK POWER TO PRIMER SWITCH; Figure 2. Primer Switch; TEST 3- CHECK POWER TO FUEL PUMP; Connect the VOM test leads across the Wire 14A from the

Section 7.2ENGINE DC CONTROL SYSTEM / AC TROUBLESHOOTING TEST 1- CHECK 7.5 AMP FUSE DISCUSSION:The panel-mounted 7.5 amp fuse is connected inseries with the 12 VDC power supply to the engineDC control system. A blown fuse will prevent enginepriming, cranking and running. TEST PROCEDURE:Push in on fu...

Page 126 - TEST 26- TEST OIL PRESSURE SWITCH

Section 7.2ENGINE DC CONTROL SYSTEM / AC TROUBLESHOOTING ENGINE COMPRESSION PRESSURE NOMINAL PRESSURE: 60 psi MINIMUM ALLOWABLE: 55 psi N O T E : F u l l c o m p r e s s i o n p r e s s u r e c a n n o t b eobtained at cranking speeds, due to the action ofa compression release mechanism. RESULTS:If ...

Page 128 - Connect negative lead to:

Section 7.2ENGINE DC CONTROL SYSTEM / AC TROUBLESHOOTING TEST 31 - STATIC TESTS ON INVERTER ASSUMPTION:• Inverter not connected to generator.• Inverter has been disconnected for at least 5 min- utes from running genset to allow capacitors to dis-charge. TEST PROCEDURE: 1. Set a DVOM to DIODE RANGE. ...

Page 135 - SPECIFICATIONS & CHARTS

Part 8 SPECIFICATIONS & CHARTS Page 8-3 WIRING DIAGRAM (DRAWING NO. A6412) 2 OF 2

Page 136 - CRANKSHAFT END PLAY; MODEL

ALLOWABLEEND PLAY 0.006-0.023 inch (0.14-0.60mm) Part 8SPECIFICATIONS & CHARTS Page 8-4 MODEL GV-220 VALVE SEAT WIDTH:DESIGN WIDTH 0.034-0.044 inch (0.87-1.13mm) VALVE SEAT ANGLE 45 degrees VALVE MARGIN:DESIGN MARGIN 0.034-0.044 inch (0.87-1.13mm) INTAKE VALVE STEMDIAMETER:DESIGN DIAMETER 0.274-...

Page 137 - CRANKCASE ASSEMBLY; CRANKCASE COVER ASSEMBLY

Part 8 SPECIFICATIONS & CHARTS Page 8-5 CRANKCASE ASSEMBLY MODEL GV-220 CYLINDER BORE:DESIGN DIAMETER 2.953-2.954 inch (75.000-75.025mm) VALVE TAPPET BORE:DESIGN DIAMETER 0.295-0.296 inch (7.494-7.520mm) CRANKSHAFT SLEEVEBEARING:DESIGN DIAMETER 1.104-1.106 inch *(WHERE APPLICABLE) (28.044-28.099...

Page 138 - CRANKSHAFT; CONNECTING ROD ASSEMBLY; PISTON

Part 8SPECIFICATIONS & CHARTS Page 8-6 CRANKSHAFT MODEL GV-220 CRANKPIN DIAMETER: DESIGN DIAMETER 1.180-1.181 inch (29.99-30.01mm) CRANKSHAFTMAIN BEARING(FLYWHEEL END):DESIGN DIAMETER 1.102-1.103 inch (28.000-28.012mm) CRANKSHAFTMAIN BEARING(PTO END):DESIGN DIAMETER 1.102-1.103 inch (28.000-28.0...

Page 140 - CAMSHAFT ASSEMBLY; OIL PUMP

Part 8SPECIFICATIONS & CHARTS Page 8-8 CAMSHAFT ASSEMBLY MODEL GV-220 MAIN CAMSHAFT BEARING DIAMETER(FLYWHEEL END): DESIGN DIAMETER 1.022-1.023 inch (25.96-25.98mm) MAIN CAMSHAFT BEARING DIAMETER (PTO END): DESIGN DIAMETER 1.297-1.298 inch (32.96-32.98mm) CAM LIFT:DESIGN LIFT 0.210-0.212 inch (5...

Page 141 - COMPRESSION PRESSURE; TORQUE SPECIFICATIONS

Part 8 SPECIFICATIONS & CHARTS Page 8-9 OIL PUMP (CONTINUED) MODEL GV-220 OIL PRESSURE RELIEFVALVE SPRING: Forcerequired to compress 0.85-0.95 pounds spring to 1.035 inch (0.39-0.43kg) (26.3mm) COMPRESSION PRESSURE MODEL GV-220 WHILE CRANKING(COLD ENGINE) 60 psi min. TORQUE SPECIFICATIONS MODEL ...