Robin America DY41 Especificações

4-5 GEARCASE COVER Gearcase cover is made of aluminum alloy die casting and is fitted on the reverse side of the flywheel. This cover em-

4-9 ROCKER COWER Rocker cover is made of aluminum ailoy die casting and it is fitted to the cylinderhead and covers the rocker chamber

4-12 COOLING SYSTEM CYLINDER BAFFLE The cooling fan and the flywheel are a single piece casting and it is fitted to the top end of the cran

4-15 COMBUSTION SYSTEM For lower fuel consumption and easy starting of the engine, the direct injection system is adopted in the combu

4-16 SECTIONAL VIEW of ENGINE - 11 -

EXHAUST VALVE \\ ROCKER COVER CYLINDER HEAD-\ INTAKE VALVE AIR CLEANER CY L BA OIL PAN-’ - 12 -

5. DISASSEMBLY and REASSEMBLY 5-1 PREPARATIONS and SUGGESTIONS 1) When disassembling the engine, remember well the locations of individual parts

5-3 DISASSEMBLING SEQUENCE b Se- quence 1 2 I 3 4 5 6 7 *Length of the bolt indicates the length from the bolt head bottom surface to the thr

- Se- quence Item Bolts, nuts etc. used Remarks Procedures 8 9 10 Fly wheel Blower housing Remove the flywheel cover. Remove the driving shaft. Rais

b l"2L quence I l5 ICylrnder 17 Tappet guide 18 Injection pump 19 Gear case Procedures Remove the cylinder. Remove the push rod sleeve from

ROBIN AMERICA, INC. ROBIN TO WISCONSIN ROBIN ENGINE MODEL CROSS REFERENCE LIST ROBIN EY08 EYl5 EY 15V EY20 EY20V EY23 EY28 EY35 EY40 EY45V EY2 1 EY44

Procedures Remarks Bolts, nuts etc. used 20 Camshaft Pull out the camshaft. Between camshaft and gear case there is a shim. (See Fig. 24.)

Se- tuence 24 I_ 25 Item Connecting rod Bearing hous- ing and crank- shaft Procedures Remove the connecting rod from the crankshaft. From the

Fj quence Item 1 T 1 1 Intake and exhaust valve Procedures I Remarks I Bolts, nuts ~Pc. used Remove the intake and exhaust valves from the cylind

5-4 HOW TO REASSEMBLE 1. PRECAUTION IN REASSEMBLING 1) Every and each part should be cleaned thoroughly. Easpecially, pay utmost care and

NOTE: With the copper shim adjust the side clear- ance of the crankshaft be 0.1 - 0.2 mm. Three kinds of shim are available, viz. 0.1 mm, 0.2 mm

Assemble the piston. MOTE: + mark in the upper part of the piston is to be faced to the fan side. MOTE: Piston rings are not assembled. MOTE: Sha

8) Install the camshaft. NOTE: Apply oil or grease to the inside of oit seal for the gear case cover. NOTE: Set the match mark of the camshaft

Assemble the injection pump. 8 mm nut ... 3 pcs. Spring washer ... 3 pcs. NOTE: Measure the distance between the face of the

a Assemble the cylinderhead. 10 mrn flange nut ... 4 pcs. Washer ... 4 pcs. NOTE: Install the intake and exhaust valves. On t

INTAKE, EXHAUST VALVE TIMING When valve clearance is at 0.4 mm and the engine is heated, intake valve opens at 16O before TDC, intake valve

CONTENTS . . See ti0 1 . 2 . 3 . 4 . 5 . 6 . 7 . 8 . 9 . 10 . 11 . 12 . n Ti rle Page SPECIFICATIONS ... 1 P

Install the tank brackets, left and right. 8 x 16 7T bolt ... 2 PCS. Spring washer ... 2 pcs. 8 mm nut bolt ... 2 p

6. FUEL 0-1 QUALITY Of FUEL Because of the high speed diesel engine, be sure to use the good quality diesel light oil. If improper fuel is used, th

7. GENERAL DESCRIPTION of AUXILIARY GADGETS and PARTS 7-1 FUEL INJECTION PUMP MECHANISM It is not too much to say that the fuel injection pump

3. Variation in quantity of fuel to be injected The quantity of fuel injected vanes according to the condition of the engine, i. e. high sp

4. Injection timing and effective starting When the plunger closes suction port of the barrel, forced delivery of fuel starts. But fuel is

0 FUEL INJECTION PUMP PUMP DAMPING VALVE DAMPING VALVE SPRING DELIVERY VALVE DELIVERY VALVE AIR RELEASE BOLT HOLDER HOUSING DELIVERY VALVE C

7-2 FUEL INJECTION NOZZLE HOLDER 1. Specifications Part Name ~ ~~ I NOZZLE HOLDER I Part No. 4 No. of nozzle hole C Identification mark 105 11840 00

5. Fuel passage From the plunger pump fuel is sent through the highpres- sure pipe 1 to the fuel passage 2. Then, at the nozzle body 3,

2) Maintenance If the test results are found not good (poor injection and "after dripping"), carefully check and repair in the fo

7-3 GOVERNOR MECHANISM and OPERATION 1. Mechanism The governor is centrifugal flyweight type, which means a flyweight is fitted to the gover

I b R X i? p? m E E I W W X E E N a3 - - 0 R X 6, t? N E E W [D X E E W r. W Y P v) X .- m - 4 I t + -1 -

2. Operation 1) Starting When the speed control lever is set on the side of high speed, the governor spring is pulled via the control link

7-4 LUBRICATION SYSTEM and OIL PUMP Lubrication is forced lubrication and wholly fdtered system by trochoid type oil pump. The oil pump,

7-6 ELECTRIC APPARATUS (Electric Starter) 1. Wiring diagram KEY SWITCH GENERATOR ELECTRIC STARTE 1) Circulation 12V35AH When starting by the

8. INSTALLATION Engine life, ease of maintenance and inspection, frequency of checks and repairs, and operating cost all depend on the

9. CHECKS and CORRECTIONS After disassembling and cleaning the engine, check and repair, if necessary, according to the correction table. Th

10. TABLES of CORRECTION STANDARDS r ITEM :ORRECTIOP METHOD STANDARD CORRECTION LIMIT 0.05 2.2 Flatness 0.03 Intake Exhaust Valve seat contact width

r I I u CORRECTION REMARKS :ORRECTlO! METHOD ITEM DIMENSIONS STANDARD USE LIMIT -0.1 I TOLERANCE LIMIT -0.1 Piston ring width Oil 4 +0.006 0 -0.02

ITEM STANDARD I , 1 USE I CORRECTION CORRECTIOP I TOLERANCE LIMIT REMARKS METHOD Intake 0.063 L - 0.093 L - Exhaust 0.083L-0.113L Clearance between

11. MAINTENANCE and STORING The following maintenance jobs apply when the engine is operated correctly under normal conditions. The indica

11-5 EVERY 500 - 600 HOURS (SEMIANNUAL) CHECKS and MAINTENANCE Checks and maintenance Reasons for requiring them Remove cylinder head and rem

L c L c VI W m V .- L c 0 m w - I I , I I I ” I -2-

12. 1/2 REDUCER AIR CLEANER MUFFLER OIL GAUGE STARTING HANDLE FUEL FILTER OIL FILTER STOP LEVER (DRAIN PLUG) .”- FUEL TANK REDUCTION GEAR P.T

12-1 CONFIGURATION of 1/2 REDUCER 01L CHECKING PLUG (M18 x 13) OIL EXHAUSTING PLUG (M8 x 13) Fig. 12- 1 - 48 -

12-2 STRUCTURE Of 1/2 REDUCER CRAN OIL FILLER PLUG BEARING (#6205) THRUST WASHER OUTPUT SHAFT BEARING (#6206) THRUST WASHER BEARING (#6204) INPU

12-2-1 INPUT SHAFT The input shaft is a wholly carburized. product in which chrome-molybudenum steel is used, and the gear A and spline a

12-3 DISASSEMBLY and REASSEMBLY of 1/2 REDUCER 12-3-1 DISASSEMBLY SEQUENCE Length of the bolt indicates the length from the bold head bottom sur

12-3-2 REASSEMBLING SEQUENCE 1. Precautions in Reassembling Every and each part should be thoroughly cleaned. Especially, pay utmost care

Pressure-fit the oil seals into the adaptor and the gear case. Set the shaft B with the thrust washer in the adaptor. (See Fig. 12-6.) Set th

3. Mounting to Engine a) Supply grease into the grease filler hole (the section shown with inclined lines in the figure) of the input

Industrial Engines

2. PERFORMANCE 2-1 MAXIMUM OUTPUT The maximum ouput of an engine is such standard power as developed by the engine, after its initial b

PERFORMANCE CURVE MODEL DY35DtB ,,,, 10 - 9- 8- 7- rv 6- 5- 4- 3- PERFORMANCE CURVE - MODEL DY41 D, B HP MAX. TORQUE I g/H P- h

LIGWWEIGWTand COMPACT 1. Lightweight because of aluminum alloy being used for various parts including the crankcase made of aluminum die cas

4-2 CRANKSHAFT The crankshaft is made of a forged chrome and molybdic steel piece with the crank pins and the journals ground to hi