C-Series Book - Industrial Engine Service
C-Series Book - Industrial Engine Service C-Series Book - Industrial Engine Service
7 FITTING PISTON RINGS 1. Place the piston ring in the cylinder sleeve and square it up with the cylinder wall by inserting the piston and moving the ring slightly. 2. Measure the gap with a feeler gauge. If the gap is less than specifi ed, remove the ring and dress the ends with a fi ne fi le until the proper clearance is obtained. With insuffi cient clearance, expansion from heat will cause the ring ends to but, resulting in warped rings and scored cylinder. Assemble the piston ring in the proper grooves of the piston. Oil the rings generously when installing. It is desirable to lightly hone the cylinder walls to cut any glaze. This will cause the piston rings to seat better. The C-46 piston with connecting rod is installed easier if the piston rings are not assembled on the piston before installation. The piston rings are assembled on the piston after the piston has been inserted into the engine. To accomplish this, the piston and connecting rod must be pushed into the cylinder sleeve from the back of the engine and far enough that the top of the piston sticks out of the sleeve. The piston rings are then assembled on the piston. CONNECTING ROD The connecting rod is machined for precision fi t with the cap bored to accommodate aluminum precision shell bearings with shims. When installing shell bearings, the bearing back and bore surface must be absolutely clean and free of oil. The bearing face should be oiled to assure lubrication when the engine is fi rst started. NOTE: Never scrape precision shell bearings, and DO NOT FILE the connecting rod parting surface to adjust the bearing. Install a new bearing. TIMING CAMSHAFT To obtain correct ignition and valve timing, it will be necessary to time the camshaft and crankshaft by meshing the gears correctly. 1. Insert camshaft Assy into crankcase, making sure the oil pressure plunger is in place. 2. Lift the camshaft Assy into position and insert the upper left hand screw through the cover plate. Catch the thread three or four turns. 3. Turn the engine to BOTTOM dead center (eye setting is close enough). 4. Rock the camshaft gear out of mess by manipulating the lower end of the camshaft Assy. 5. Turn the camshaft gear until the hole in the upper drive gear is central in the hole in the top of the crankcase (under the governor), with the camshaft block forced against the cover plate, in the position it shall have when all screws are down tight. To check, tighten the screw temporarily used to hold the camshaft block in place. Should this force the holes out of alignment, try changing the mesh of the gear by one tooth in the direction to bring the holes central. When the holes are central with the crank at outer dead center, the camshaft will be timed exactly right. Next, loosen the single screw used to hold the camshaft Assy in place and insert and tighten the two small piloted screws. Then, secure the two larger screws and fi nally insert the central screw. Do not tighten the central screw too tightly, as it may distort the cover plate. It should only be tight enough to prevent oil leakage. Make the necessary oil connection on the inside of the crankcase and reassemble the parts removed. 32 C-SERIES SERVICE, OPERATION & PARTS MANUAL – AEPB1 1-800-331-3662
CRANKSHAFT CRANKSHAFT Assy (61) Main Bearings Timing Ring Gear Oil Collector 8. Remove the fi ve central screws from the rectangular cover plate behind the fl ywheel. These hold the camshaft Assy in place. Do NOT remove this cover plate. The camshaft Assy may now be lifted out of the crankcase. Attached to the camshaft Assy is the oil pump, which may be removed by removing two cap screws. CAMSHAFT/ VALVE LIFTER Assy (90) 7 INLET PORT To remove crankshaft: 1. Disconnect connecting rod. 2. Remove large fl ywheel. 3. Remove clutch and small fl ywheel. 4. Remove small fl ywheel housing. 5. Remove the crankshaft through small fl ywheel housing opening. VALVE GUIDES EXHAUST PORT INTAKE VALVE VALVE SEAT INSERTS EXHAUST VALVE CAMSHAFT The camshaft Assy is virtually the heart of the engine. It is so well made and so thoroughly lubricated that there is little occasion for its removal. If this should become necessary, proceed as follows: 1. Drain crankcase. 2. Remove strainer. 3. Remove top crankcase cover. FLYWHEELS A large heavy fl ywheel provides smooth, even speed operation. This fl ywheel also carries the timing marks. A smaller light fl ywheel is mounted at the power take-off end and drives the clutch power take-off. It also acts as a counter balance to help reduce vibration. 4. Remove magneto. 5. Remove governor. 6. Disconnect oil lines at camshaft block and oil pump. 7. Remove valve push rods. 1-800-331-3662 ARROW ENGINE COMPANY 33
- 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 12 and 13: 1 OIL PUMP A trochoidal or gerotor
- 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 34 and 35: 6 Notes 28 C-SERIES SERVICE, OPERAT
- Page 36 and 37: 7 REASSEMBLY OF CYLINDER HEAD 1. To
- Page 40 and 41: 7 Notes 34 C-SERIES SERVICE, OPERAT
- 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
- Page 62 and 63: 11 CRANKSHAFT ASSEMBLY 1 10 2 8 7 5
- Page 64 and 65: 11 CYLINDER HEAD ASSEMBLY 11 4 13 1
- Page 66 and 67: 11 GOVERNOR ASSEMBLY 176-46/66/96 G
- Page 68 and 69: 11 176-RK-46 Governor Repair Kit, C
- Page 70 and 71: 11 ROCKER ARM ASSEMBLY 9 14 13 15 1
- Page 72 and 73: 11 PRESSURE CONDENSING GROUP 11 8 2
- Page 74 and 75: 11 356-A-RK-46 Fan Repair Kit Descr
- Page 76 and 77: 11 CLUTCH ASSY 1 7" Double Bearing
- Page 78 and 79: 11 CLUTCH ASSEMBLY 1 10" 2 6 3 4 5
- Page 80 and 81: 11 CLUTCH ASSEMBLY 11" 1 5 2 3 4 6
- Page 82 and 83: 11 RING GEAR, STARTER & INSTRUMENT
- Page 84 and 85: 11 ARROW PORTABLE ELECTRIC STARTER
- Page 86 and 87: 11 MAGNETO - AMERICAN BOSCH ASSY (H
CRANKSHAFT<br />
CRANKSHAFT Assy (61)<br />
Main<br />
Bearings<br />
Timing<br />
Ring Gear<br />
Oil<br />
Collector<br />
8. Remove the fi ve central screws from the<br />
rectangular cover plate behind the fl ywheel.<br />
These hold the camshaft Assy in place.<br />
Do NOT remove this cover plate. The<br />
camshaft Assy may now be lifted out of the<br />
crankcase. Attached to the camshaft Assy<br />
is the oil pump, which may be removed by<br />
removing two cap screws.<br />
CAMSHAFT/ VALVE LIFTER Assy (90)<br />
7<br />
INLET<br />
PORT<br />
To remove crankshaft:<br />
1. Disconnect connecting rod.<br />
2. Remove large fl ywheel.<br />
3. Remove clutch and small fl ywheel.<br />
4. Remove small fl ywheel housing.<br />
5. Remove the crankshaft through small<br />
fl ywheel housing opening.<br />
VALVE<br />
GUIDES<br />
EXHAUST<br />
PORT<br />
INTAKE<br />
VALVE<br />
VALVE<br />
SEAT<br />
INSERTS<br />
EXHAUST<br />
VALVE<br />
CAMSHAFT<br />
The camshaft Assy is virtually the heart<br />
of the engine. It is so well made and so<br />
thoroughly lubricated that there is little<br />
occasion for its removal. If this should<br />
become necessary, proceed as follows:<br />
1. Drain crankcase.<br />
2. Remove strainer.<br />
3. Remove top crankcase cover.<br />
FLYWHEELS<br />
A large heavy fl ywheel provides smooth,<br />
even speed operation. This fl ywheel also<br />
carries the timing marks. A smaller light<br />
fl ywheel is mounted at the power take-off<br />
end and drives the clutch power take-off. It<br />
also acts as a counter balance to help reduce<br />
vibration.<br />
4. Remove magneto.<br />
5. Remove governor.<br />
6. Disconnect oil lines at camshaft block and<br />
oil pump.<br />
7. Remove valve push rods.<br />
1-800-331-3662 ARROW ENGINE COMPANY<br />
33
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