Robin EH09D User manual
SERVICE
MANUAL
EH09,
EH12-2 Rammer
ENGINES
Models
PUB-ES1330
Rev. 12/01
© Copyright 2001 Robin America, Inc.
940 Lively Blvd. • Wood Dale, IL 60191 • Phone: 630-350-8200 • Fax: 630-350-8212
e-mail: [email protected] • www.robinamerica.com
CONTENTS
Section Title Page
1. SPECIFICATIONS....................................................................................................... 1
2. PERFORMANCE ........................................................................................................3
2-1 MAXIMUM OUTPUT........................................................................................................ 3
2-2 CONTINUOUS RATED OUTPUT .................................................................................... 3
2-3 MAXIMUM TORQUE ....................................................................................................... 3
2-4 PERFORMANCE CURVES ............................................................................................. 4
3. FEATURES..................................................................................................................6
4. GENERAL DESCRIPTION OF ENGINE COMPONENTS .......................................... 7
4-1 CYLINDER AND CRANKCASE ....................................................................................... 7
4-2 MAIN BEARING COVER ................................................................................................. 7
4-3 CRANKSHAFT.................................................................................................................7
4-4 CONNECTING ROD AND PISTON ................................................................................. 8
4-5 PISTON RINGS ...............................................................................................................8
4-6 CAMSHAFT ..................................................................................................................... 8
4-7 VALVE ARRANGEMENT ................................................................................................. 9
4-8 CYLINDER HEAD............................................................................................................ 9
4-9 GOVERNOR SYSTEM .................................................................................................... 9
4-10 COOLING SYSTEM..................................................................................................... 10
4-11 LUBRICATION SYSTEM.............................................................................................. 10
4-12 IGNITION SYSTEM ..................................................................................................... 10
4-13 CARBURETOR............................................................................................................ 10
4-14 AIR CLEANER ..............................................................................................................11
4-15 DECOMPRESSION SYSTEM ......................................................................................11
4-16 SECTIONAL VIEW OF ENGINE.................................................................................. 12
5. DISASSEMBLY AND REASSEMBLY....................................................................... 16
5-1 PREPARATIONS AND SUGGESTIONS........................................................................ 16
5-2 SPECIAL TOOLS (EH12-2D)......................................................................................... 16
5-3 DISASSEMBLY PROCEDURES.................................................................................... 17
5-4 REASSEMBLY PROCEDURES..................................................................................... 30
5-5 BREAK-IN OPERATION ................................................................................................ 46
6. MAGNETO ................................................................................................................ 46
6-1 OPERATION AND FUNCTION ...................................................................................... 46
6-2 BASIC THEORY ............................................................................................................ 46
6-3 WIRING DIAGRAM....................................................................................................... 48
7. AUTOMATIC DECOMPRESSION SYSTEM............................................................. 49
8a. FLOAT TYPE CARBURETOR (EH09D) ................................................................. 50
8a-1 OPERATION AND CONSTRUCTION.......................................................................... 50
8a-2 DISASSEMBLY AND REASSEMBLY........................................................................... 51
Section Title Page
8b. FLOAT TYPE CARBURETOR (EH12-2D)............................................................. 53
8b-1 OPERATION AND CONSTRUCTION..........................................................................53
8b-2 DISASSEMBLY AND REASSEMBLY...........................................................................54
8c. DIAPHRAGM TYPE CARBURETOR (OPTION) ................................................... 56
8c-1 OPERATION AND CONSTRUCTION ..........................................................................56
8c-2 DISASSEMBLY PROCEDURE ....................................................................................59
8c-3 INSPECTION PROCEDURE ......................................................................................59
8c-4 REASSEMBLY PROCEDURE .....................................................................................60
8c-5 DIAPHRAGM CARBURETOR ADJUSTMENT METHOD............................................61
9. STARTING SYSTEM.................................................................................................62
9-1 RECOIL STARTER ........................................................................................................62
10. TROUBLESHOOTING ........................................................................................... 66
10-1 STARTING DIFFICULTIES ..........................................................................................66
10-2 ENGINE MISFIRE........................................................................................................67
10-3 ENGINE STOPS ..........................................................................................................67
10-4 ENGINE OVERHEAT...................................................................................................68
10-5 ENGINE KNOCKS .......................................................................................................68
10-6 ENGINE BACKFIRES THROUGH CARBURETOR.....................................................68
11. INSTALLATION ..................................................................................................... 69
11-1 INSTALLING.................................................................................................................69
11-2 VENTILATION ..............................................................................................................69
11-3 EXHAUST GAS DISCHARGE .....................................................................................69
11-4 POWER TRANSMISSION TO DRIVEN MACHINES ...................................................69
12. SERVICE DATA...................................................................................................... 70
12-1 CLEARANCE DATAAND LIMITS ................................................................................70
12-2 TORQUE SPECIFICATIONS .......................................................................................76
12-3 OIL GRADE CHART ....................................................................................................76
13. MAINTENANCE AND STORAGE.......................................................................... 77
13-1 DAILY MAINTENANCE................................................................................................77
13-2 INITIAL 20 HRS. MAINTENANCE ...............................................................................77
13-3 EVERY 50 HRS. (10 DAYS) MAINTENANCE .............................................................77
13-4 EVERY 100-200 HRS. (MONTHLY) MAINTENANCE .................................................78
13-5 EVERY 300 HRS. or YEARLY MAINTENANCE ..........................................................78
13-6 EVERY 500-600 HRS. MAINTENANCE ......................................................................78
13-7 EVERY 1000 HRS. (YEARLY) MAINTENANCE..........................................................78
13-8 ENGINE STORAGE.....................................................................................................78
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1
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1. SPECIFICATIONS
Specifications are subject to change without notice.
LEDOMD90HE
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tnemecalpsiDnotsiPmc68
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oitaRnoisserpmoC 5.9
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euqroT.xaMN8.4
・
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・
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noitacirbuL epyThsalpS
tnacirbuL rehgihroESssalC;03-W01ro03#,02#EASliOelibomotuA
tnacirbuLfoyticapaC ).lag.S.U970.0(sretil3.0
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・
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・
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metsySdeeFleuF epyTytivarG
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gulPkrapS A6RMB,A6MBKGN
metsySgnitratS retratSlioceR
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thgieWyrD ).bl7.02(gk4.9
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-
2
-
Specifications are subject to change without notice.
LEDOMD2-21HE
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ekortSxeroB ).ni96.1x63.2(mm34x06
tnemecalpsiDnotsiPmc121
3
).ni.uc93.7(
oitaRnoisserpmoC 0.9
tuptuO suounitnoC.m.p.r0063/)PH8.2(Wk1.2
.xaM.m.p.r0063/)PH5.3(Wk6.2
euqroT.xaMN5.7 ・fgk67.0(m ・.m.p.r0062/)m
noitatoRfonoitceriD ediStfahS.O.T.PmorFdeweiVsAesiwkcolcretnuoC
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leuF enilosaGdedaelnUelibomotuA
oitaRnoitpmusnoCleuFWk/g013 ・PH/g032(h ・tuptuOdetaRsuounitnoCtA)h
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3
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2. PERFORMANCE
2-1 MAXIMUM OUTPUT
The maximum output is the output of an engine with its throttle valve fully opened and considering that all
the moving parts are properly broken in.
A new engine may not produce full maximum output while its moving parts are still not broken-in.
NOTE :
Power curves shown in the following charts are made in conformity with SAE internal combustion engine
standard test code J1349.
2-2 CONTINUOUS RATED OUTPUT
The continuous rated output is the output of an engine at optimum governed speed which is most favor-
able from the view point of engine's life and fuel consumption.
When the engine is installed on a certain equipment, it is recommended that the continuous output
required from the engine be kept below this continuous rated output.
2-3 MAXIMUM TORQUE
The maximum torque is the torque at the output shaft when the engine is producing maximum output at
a specified r.p.m..
-
4
-
2-4 PERFORMANCE CURVES
0
2000
0
1
2
3
6 0.6
0.5
0.4
5
4
1
2
N・m kgf・m
HP kW
TORQUE
OUTPUT
REVOLUTION r.p.m.
3000 4000
MAXIMUM HORSEPOWER
CONTINUOUS
RATED HP
MAXIMUM TORQUE
RECOMMENDED
HORSEPOWER
RANGE
EH09D
-
5
-
0
1
2
3
1
2
3
0.7
0.8
0.6
4
2000 3000 4000
6
7
8
kW
HP MAXIMUM TORQUE
MAXIMUM HORSEPOWER
OUTPUT
TORQUE
RECOMMENDED
HORSEPOWER
RANGE
CONTINUOUS RATED HP
N・m kgf・m
REVOLUTION r.p.m.
EH12-2D
-
6
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3. FEATURES
1. The EH09D and EH12-2D engines are designed exclusively for rammers.
Optimum lubrication and better inclined operation are obtained thanks to upright cylinder design.
2. Easy operation
These engines, with its upright cylinder, reduce swinging moment and achieved easier operation for
rammers.
Because the direction of vibratory force caused by reciprocating parts, such as piston and connecting
rod, is the same as the jumping direction of the rammer itself. Furthermore, these engines are de-
signed carefully to balance the weight on the rammer by locating the air cleaner and muffler symmetri-
cally with the center line of the cylinder.
3. Improved durability
Vibration damping and durability are greatly improved by introducing a vibration-proof breather mecha-
nism, thick sheet metal, reinforced casting parts with thick walls and ribs, and a carburetor that pre-
vents fuel leakage when the engine is inclined.
4. Ideal engine performance for rammer
The overhead valve design offers ideal combustion characteristics.
More emphasis was placed on the continuous rated power of the engine than its maximum power,
considering operating characteristics when the engine is mounted on a rammer.
5. Easy starting
Combining an ignition system with an advanced spark timing and mechanical compression release
improves start-ability. Equipped with a low-speed governor, it can be started without operating the
throttle.
6. Economical and clean engine
These engines achieved fuel-efficiency and cleanliness, reducing polluting exhaust emission remark-
ably.
This manual suits for next models
1
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