C-Series Book - Industrial Engine Service

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1 OIL PUMP A trochoidal or gerotor type oil pump supplies oil under pressure to the oil circulatory system. The oil pump is attached to, and driven by, the camshaft Assy. On current production engines an oil pressure relief valve bypass, set at 60-65 pounds pressure, is built into the oil pump Assy. This serves to protect the oil fi lter element during extremely cold temperatures. The relief valve bypass is of the ball and spring design. Adjustment may be made by adding or removing spacer washers from beneath the oil relief valve adjusting screw. Add washers to increase the pressure and remove to lower pressure. Adjusting Screw Spacer Washers GEROTOR OIL PUMP Spring Ball Oil Pressure Relief Valve to Camshaft Gerotor On older engines using the trochoidal type pump, a separate bypass valve is located in the oil line between the oil pump and the oil fi lter. This bypass is nonadjustable and factory set at 75-80 pounds. On engines manufactured prior to 1983, an external gear type pump was used with no bypass between the pump and oil fi lter. The trochoidal oil pump with the bypass valve will serve as an exact replacement on previous, older manufactured engines. It should not be necessary to service oil pump except during overhaul when it should be disassembled, cleaned, inspected, and checked for wear. Severe sludging will require occasional disAssy to clean pump passages and the relief valve. Low oil pressure is a possible indication of clogged oil pump passages. OIL PRESSURE RELIEF VALVE The oil pressure relief valve, which is located in the camshaft base block, provides proper oil pressure to all parts of the engine. If it is necessary to adjust oil pressure, adjustment can be made by inserting or removing washers in the spring retainer plug located behind the relief valve spring. This plug should always be screwed down tight. Oil pressure SHOULD NOT be regulated by loosening this plug. To increase oil pressure, washers are added, and to decrease oil pressure, washers are removed. Normally, 4 or 5 washers will give 30-45 pounds oil pressure. The oil pressure relief valve depends upon free movement of the ball to operate correctly. If erratic oil pressure is traced to the pressure relief valve, remove plug, pull out spring and ball, clean thoroughly, and inspect spring for correct length. The oil pressure is factory set at 55-65 pounds pressure on all engines with factory-installed oil fi lters. On Climax engines manufactured prior to 1977 and not manufactured by Arrow <strong>Engine</strong> Company, normal oil pressure was 17-20 PSI. The bypass spring on older engines was lighter in tension than the current spring. By installing the current spring, Part #94-A, and installing the OFK- 1-NS Oil Filter Kit, older model engines can be updated to current specifi cations. 6 C-SERIES SERVICE, OPERATION & PARTS MANUAL – AEPB1 1-800-331-3662
OIL FILTER The standard oil fi lter is accessible on the outside of the engine base and is the full fl ow type. It has a built-in bypass valve that will allow the oil to continue to fl ow to the engine bearings, even though the fi lter element is clogged up. Also, the fi lter has an antisyphon valve built-in. ALL OIL IS FILTERED BEFORE LUBRICATING THE WORKING PARTS. GOVERNOR LUBRICATION The governor is lubricated automatically from the engine oil supply, and requires no additional lubrication. However, an occasional drop of light oil on the throttle lever linkage to prevent binding and wear is a good idea. Periodically loosen the oil line fi tting on top of the governor to be sure the line isn’t clogged and that the governor is being lubricated. CLUTCH LUBRICATION Throw Out Collar – Before starting, apply a small amount of lubricant through the fi tting on the tapered part of the housing. Anti-Friction Bearings – For clutches not supplied with permanently lubricated bearings, apply weekly a small amount of lubricant to pilot bearings through the hole in the clutch shaft; and to shaft bearings through the grease fi tting located at the housing hub. Lubricant – Any high grade, soda base short fi ber grease may be used (which is recommended for anti-friction bearings), having operation temperatures of 200°F (93°C). A multi-purpose lithium base grease for high operating temperature is highly recommended. The C-96, C-101 and C-106 engines are furnished with a sealed, shielded pilot bearing in the twin disc clutch and requires no lubrication through the clutch shaft. The C-96 clutch shaft is normally a solid shaft with no grease fi tting. 1 GOVERNOR ASSEMBLY Oil Supply Flyweights Thrust Bearing Oil Supply Flyweights Oil Pressure Indicator Oil Return Oil Pressure Indicator Oil Return C-46, C-66, C-96 C-101 and C-106 1-800-331-3662 ARROW ENGINE COMPANY 7
Page 1: AEPB1 © November 2010
Page 4 and 5: 4 IGNITION SYSTEM 17 Magneto-Low Te
Page 6 and 7: iv C-SERIES SERVICE, OPERATION & PA
Page 8 and 9: the cooling system. The proper wate
Page 10 and 11: 1 3. Raise compression release leve
Page 14 and 15: 1 Notes 8 C-SERIES SERVICE, OPERATI
Page 16 and 17: 2 FUEL CONNECTION An extended line
Page 18 and 19: 2 If we use the same example, burni
Page 20 and 21: 3 When the pressure-condensing cool
Page 22 and 23: 3 Notes 16 C-SERIES SERVICE, OPERAT
Page 24 and 25: 4 For protection against enforced s
Page 26 and 27: 5 The constant fl ow of fresh air i
Page 28 and 29: 6 Slide the splined lever onto the
Page 30 and 31: 6 3. Adjustment Proper adjustment o
Page 32 and 33: 6 If proper adjustment cannot be re
Page 36 and 37: 7 REASSEMBLY OF CYLINDER HEAD 1. To
Page 38 and 39: 7 FITTING PISTON RINGS 1. Place the
Page 42 and 43: 8 CLUTCH WON’T PULL OR HEATS Clut
Page 44 and 45: 8 ENGINE FAILS TO OPERATE PROPERLY
Page 46 and 47: 9 C-101 Emission Set Points RPM RAN
Page 48 and 49: 9 42 C-SERIES SERVICE, OPERATION &
Page 50 and 51: 10 CLEARANCES AND TOLERANCES - CRAN
Page 52 and 53: 10 CLEARANCES AND TOLERANCES - CAMS
Page 54 and 55: 10 CLEARANCES AND TOLERANCES - CONN
Page 56 and 57: 10 DIMENSIONS (To remove head and p
Page 58 and 59: 10 HORSEPOWER DERATES Condition Con
Page 60 and 61: 11 11 PARTS CRANKCASE ASSEMBLY 29 3
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11 CRANKSHAFT ASSEMBLY 1 10 2 8 7 5
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11 CYLINDER HEAD ASSEMBLY 11 4 13 1
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11 GOVERNOR ASSEMBLY 176-46/66/96 G
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11 176-RK-46 Governor Repair Kit, C
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11 ROCKER ARM ASSEMBLY 9 14 13 15 1
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11 PRESSURE CONDENSING GROUP 11 8 2
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11 356-A-RK-46 Fan Repair Kit Descr
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11 CLUTCH ASSY 1 7" Double Bearing
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11 CLUTCH ASSEMBLY 1 10" 2 6 3 4 5
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11 CLUTCH ASSEMBLY 11" 1 5 2 3 4 6
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11 RING GEAR, STARTER & INSTRUMENT
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11 ARROW PORTABLE ELECTRIC STARTER
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11 MAGNETO - AMERICAN BOSCH ASSY (H
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11 MAGNETO ACCESSORIES 11 14 15 18
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11 IGNITION ASSEMBLY 36 20 22 13 18
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11 ALTERNATOR SYSTEM 5 10 6 8 7 2 4
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11 BREATHER SYSTEM 1 244-BHK-96 1 2
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CARBURETORS FOR NEW STYLE ENGINES C
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11 CARBURETORS FOR OLD STYLE ENGINE
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11 7 3 11 13 14 5 9 12 19 18 6 10 2
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11 OIL LINES, OIL PUMP, AND STRAINE
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11 FLEXIBLE OIL LINES FOR OLD STYLE
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12 OIL LINE INSTALLATION INSTRUCTIO
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12 OLK-U-66 Complete Universal Oil
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13 C-46 COMPLETE GASKET SET GSC-46
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13 C-96 COMPLETE GASKET SET GSC-96
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14 An easy, inexpensive way to redu
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C-Series Book - Industrial Engine Service

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