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32

PERIODIC SERVICE

EN

GLISH

B

Fuel system diagrams

[WG1605-G-E3 / WG1605-GL-E3 / WG1903-G-E3 / WG1903-GL-E3 /  WG2503-G-E3 / 

 WG2503-GL-E3 / WG3800-G-E3 / WG3800-GL-E3]

[WG1605-L-E3 / WG1605-GL-E3 / WG1605-LN-E3 / WG1903-L-E3 / WG1903-GL-E3 / 

 WG1903-LN-E3 / WG2503-L-E3 / WG2503-GL-E3 / WG2503-LN-E3 / WG3800-L-E3 /

 WG3800-GL-E3 / WG3800-LN-E3]

[WG1605-GL-E3 / WG1903-GL-E3 / WG2503-GL-E3 / WG3800-GL-E3]

Both of G and L types

 

 
 
 

 
(1) Delivery pipe assy
(2) Manifold (FPM)
(3) Fuel pump assy
(4) Fuel filter
(5) Gasoline tank
(6) Regulator assy (D-EPR)
(7) Vapor hose
(8) Regulator assy (D-STAGE)
(9) Lock off valve with LPG filter
       (a) Solenoid
       (b) Outlet
       (c) Filter bowl
(10) LPG manual valve
(11) LPG tank
(12) Coolant hose

A

The -marked
component parts are 
Not Provided by
KUBOTA.

(A) Gasoline line
(B) Bleed / Return circuit
(C) Gaseous propane line
(D) Liquid propane line
(E) Hot coolant inlet or outlet line

EG523-8917_E.book  Page 32  Friday, May 17, 2019  10:32 AM

Содержание WG1605-G-E3

Страница 1: ...5 123 Taman Perindustrian Axis Seksyen 25 40400 Shah Alam Selan or Darul Ehsan Malaysia Telephone 60 3 736 1388 Philippines KUBOTA PHILIPPINES INC 232 Quirino Hi hway Baesa Quezon City 1106 Philippine...

Страница 2: ...L E3 WG2503 GL E3 WG2503 N E3 WG2503 LN E3 WG3800 G E3 WG3800 L E3 WG3800 GL E3 WG3800 N E3 WG3800 LN E3 AX F 17 31 10 K California Proposition 65 Engine exhaust some of its constituents certain vehic...

Страница 3: ...03 GL E3 WG1903 N E3 WG1903 LN E3 WG2503 G E3 WG2503 L E3 WG2503 GL E3 WG2503 N E3 WG2503 LN E3 WG3800 G E3 WG3800 L E3 WG3800 GL E3 WG3800 N E3 WG3800 LN E3 1BGAAAIAP0020 1BGAAAIAP0540 1BGAAAIAP0220...

Страница 4: ...have the most up to date information Please do not hesitate to consult with them This symbol the industry s Safety Alert Symbol is used throughout this manual and on labels on the machine itself to wa...

Страница 5: ...oline 20 Fuel level check and refueling 20 Checking the fuel pipes 20 LPG 20 LPG leakage check 20 LPG fuel tank check 20 LPG regulator check 20 NG 21 NG leakage check 21 NG fuel tank check 21 NG regul...

Страница 6: ...heck for LPG regulator with vaporizer 31 NG fuel system 31 Fuel system diagrams 32 ELECTRIC WIRING 34 FAN BELT 34 Adjusting fan belt tension 34 OIL SEPARATOR 35 Changing of oil separator element 35 RU...

Страница 7: ...ndition A Before allowing other people to use your engine explain how to operate and have them read this manual before operation A DO NOT modify the engine UNAUTHORIZED MODIFICATIONS to the engine may...

Страница 8: ...e engine clean and free of accumulated dirt grease and trash to avoid a fire Store flammable fluids in proper containers and cabinets away from sparks and heat A Check for and repair leaks immediately...

Страница 9: ...ic fluid by following the maintenance check list A To avoid a fire do not short across power cables and wires Check to see that all power cables and wirings are in good condition Keep all electrical c...

Страница 10: ...luid level is below the LOWER mark Otherwise the component parts may deteriorate earlier than expected which may shorten the service life or cause an explosion Immediately add distilled water until th...

Страница 11: ...ste fluids according to environmental regulations 11 CONDUCTING SAFETY CHECKS MAINTENANCE A When inspecting the engine or servicing place the engine on a large flat surface DO NOT work on anything tha...

Страница 12: ...he same location s as the replaced component 5 Mount new warning and caution labels by applying to a clean dry surface and pressing any bubbles to the outside edge A Replace fuel pipes and lubricant p...

Страница 13: ...cal KUBOTA dealer When in need of parts be prepared to give your dealer the engine serial number Locate the serial number now and record them in the space provided WG1605 G E3 WG1605 L E3 WG1605 GL E3...

Страница 14: ...E3 WG1903 L E3 WG1903 GL E3 WG1903 LN E3 WG2503 L E3 WG2503 GL E3 WG2503 LN E3 WG3800 L E3 WG3800 GL E3 WG3800 LN E3 on LPG only a KUBOTA genuine regulator assy D STAGE and lock off valve with LPG fi...

Страница 15: ...GL N LN G L GL N LN 1 Oil filler plug 14 Electronic control throttle 2 Delivery pipe gasoline 15 Injector 3 Plug ignition coil 16 Gas mixer 4 Spark plug 17 Pressure regulator 5 PCV valve 18 Intake ma...

Страница 16: ...me Type G L GL N LN G L GL N LN 1 Engine hook 13 Alternator 2 Oil filler plug 14 Intake manifold 3 PCV valve 15 Electronic control throttle 4 Delivery pipe gasoline 16 Injector 5 Plug ignition coil 17...

Страница 17: ...me Type G L GL N LN G L GL N LN 1 Engine hook 13 Alternator 2 Oil filler plug 14 Intake manifold 3 PCV valve 15 Electronic control throttle 4 Delivery pipe gasoline 16 Injector 5 Plug ignition coil 17...

Страница 18: ...erator Pump Ref No Part Name Type Ref No Part Name Type G L GL N LN G L GL N LN 1 Engine hook 13 Alternator 2 Oil filler plug 14 Intake manifold 3 PCV valve 15 Electronic control throttle 4 Plug ignit...

Страница 19: ...N Type WG1605 N E3 WG1903 N E3 WG2503 N E3 WG3800 N E3 LN Type WG1605 LN E3 WG1903 LN E3 WG2503 LN E3 WG3800 LN E3 Ref No Part Name Type Remarks G L GL N LN 1 Sensor O2 2 Fuel pump 3 Manifold FPM 4 R...

Страница 20: ...de space when checking A Keep dust or fuel away from the battery wiring muffler and engine to prevent a fire Check and clear them before operating everyday Pay attention to the heat of the exhaust pip...

Страница 21: ...er the influence of alcohol or drugs A Do not wear loose torn or bulky clothing around the machine It may catch on moving parts or controls leading to the risk of accident Use additional safety items...

Страница 22: ...OFF B ON C START 4 Check to see that MIL Malfunction Indicator Light is ON 5 Turn the key to the START position and the starter will begin turning Release the key immediately when the engine starts 6...

Страница 23: ...engine for 2 to 3 minutes 2 Turn the starter switch to the OFF position 3 Close the withdrawal valve of the NG supply 4 Remove the key at the OFF position LPG 1 Cool down the engine for 2 to 3 minutes...

Страница 24: ...below the prescribed level If this should happen during operation or should not go off even after the engine is accelerated more than 1000rpm immediately stop the engine and check the following 1 Engi...

Страница 25: ...s use proper tools that are in good condition Make sure you understand how to use them before performing any service work A When installing be sure to tighten all bolts lest they should be loose Tight...

Страница 26: ...This is not necessary to keep the emission related warranty valid To ensure the best quality and reliability use new KUBOTA Genuine parts or their equivalents for repair and replacement whenever you...

Страница 27: ...e maintenance done Items Interval Remarks Ref Page Every 400 hours Every 500 hours Every 1000 hours Every 1500 hours Each part Check Clean WG1605 E3 WG1903 E3 WG2503 E3 Engine oil Check Replenish 22 C...

Страница 28: ...have maintenance done Items Interval Remarks Ref Page Every 2000 hours Every 3000 hours Yearly Each 2 years Each part Check Clean WG1605 E3 WG1903 E3 WG2503 E3 Engine oil Check Replenish 22 Change 23...

Страница 29: ...ours Fuel pipe clamps LPG line LPG tank to regulator assy D EPR Check the connector Check fuel leakage 20 Change Fuel pipe clamps NG line NG tank to regulator assy D EPR Check the connector Check fuel...

Страница 30: ...Fuel pipe clamps LPG line LPG tank to regulator assy D EPR Check the connector Check fuel leakage 20 Change Fuel pipe clamps NG line NG tank to regulator assy D EPR Check the connector Check fuel leak...

Страница 31: ...pipe clamps LPG line LPG tank to regulator assy D EPR Check the connector Check fuel leakage 20 Change Fuel pipe clamps NG line NG tank to regulator assy D EPR Check the connector Check fuel leakage 2...

Страница 32: ...L E3 WG1605 GL E3 WG1605 LN E3 WG1903 L E3 WG1903 GL E3 WG1903 LN E3 WG2503 L E3 WG2503 GL E3 WG2503 LN E3 WG3800 L E3 WG3800 GL E3 WG3800 LN E3 1 Use Commercial LPG only 2 Fuel tank is liquid withdr...

Страница 33: ...ulfur may be present in wellhead gas Also if the engine has been emergency stopped or unexpectedly stopped while running clearing the engine of residual gas for safety is mandatory Shut off fuel suppl...

Страница 34: ...1903 L E3 WG1903 GL E3 WG1903 N E3 WG1903 LN E3 WG2503 G E3 WG2503 L E3 WG2503 GL E3 WG2503 N E3 WG2503 LN E3 WG3800 G E3 WG3800 L E3 WG3800 GL E3 WG3800 N E3 WG3800 LN E3 1 Oil filler plug 2 Oil leve...

Страница 35: ...fter the initial 50 hours of operation and every 200 hours thereafter WG1605 E3 WG1903 E3 WG2503 E3 or every 400 hours thereafter WG3800 E3 2 Remove the drain plug at the bottom of the engine and drai...

Страница 36: ...0 hours thereafter WG3800 E3 2 Remove the old oil filter cartridge with a filter wrench 3 Apply a film of oil to the gasket for the new cartridge 4 Screw in the cartridge by hand When the gasket conta...

Страница 37: ...e completely SPARK PLUG BCleaning and adjustment clearance If the spark plug electrode or its insulator is soiled or is covered with deposited carbon it may cause engine trouble The soil carbon deposi...

Страница 38: ...the first stop to allow excess pressure to escape Then remove cap completely If overheats should occur steam may gush out from the radiator or recovery tank Severe burns could result BChecking coolant...

Страница 39: ...WG2503 N E3 WG2503 LN E3 4 Check to see the drain shutoff valve which is at the lower part of the radiator as figures below A If the radiator cap has to be removed follow the caution and securely reti...

Страница 40: ...on at overheating The event that the coolant temperature is nearly or more than the boiling point is called OVERHEATING While running make the following checks to see that all parts are working correc...

Страница 41: ...ixed cooling water flush the radiator with fresh water Repeat this procedure 2 or 3 times to clean up the radiator and engine block from inside 3 Mixing the LLC Premix 50 LLC with 50 clean soft water...

Страница 42: ...e BCleaning primary air cleaner element 1 To clean the element use clean dry compressed air on the inside of the element Air pressure at the nozzle must not exceed 205 kPa 2 1kgf cm 30psi Maintain rea...

Страница 43: ...ed with approved joint sealant compound and be tightened to the specified torque using a wrench and leak check must be performed as shown in the below table NOT KUBOTA supplied BNG fuel system A All f...

Страница 44: ...03 GL E3 WG3800 GL E3 Both of G and L types 1 Delivery pipe assy 2 Manifold FPM 3 Fuel pump assy 4 Fuel filter 5 Gasoline tank 6 Regulator assy D EPR 7 Vapor hose 8 Regulator assy D STAGE 9 Lock off v...

Страница 45: ...s is more than 5kPa 3 Compressed Natural Gas 1 NG fuel supply 2 Filter 3 Lock off valve for NG fuel 4 D EPR 5 Vaporizer DSR 6 CNG tank 7 High pressure Lock off valve 8 High pressure regulator 9 Crank...

Страница 46: ...tension is incorrect loosen the alternator mounting bolts and using a lever placed between the alternator and the engine block pull the alternator out until the deflection of the belt falls within acc...

Страница 47: ...efore changing the oil separator element 1 Remove the cover and take out the oil separator element and gasket Then wipe oil and grease off the zone in question 2 Fit a new oil separator element and ga...

Страница 48: ...reeze when the temperature drops below 0 C 32 F it is very important that no water is left in the machine A When using anti freeze it is not necessary to take step 1 above 2 Remove dirty engine oil fi...

Страница 49: ...lways remove battery from machine charge fully and keep indoors Install in machine at time of use Clogged air cleaner Clean or replace Spark plug electrodes are wet with gasoline Dry electrode and res...

Страница 50: ...cessary Also check the fuel system for air or leaks Moving parts are overheated due to shortage of lubrication oil or improper lubrication Check amount of engine oil with oil level gauge Check lubrica...

Страница 51: ...ration of antifreeze Add water only or change to coolant with the specified mixing ratio Radiator net or radiator fin clogged with dust Clean net or fin carefully Inside of radiator or coolant flow ro...

Страница 52: ...43 6 3000 SAE net continuous kW HP min rpm 25 0 33 5 3000 Max torque SAE Gross intermittent N m lbf ft min rpm 120 88 5 2400 117 86 3 2400 Governor type Electronic Governor Ignition system Full transi...

Страница 53: ...2 5 43 6 3000 SAE net continuous kW HP min rpm 25 0 33 5 3000 Max torque SAE Gross intermittent N m lbf ft min rpm 120 88 5 2400 117 86 3 2400 Governor type Electronic Governor Ignition system Full tr...

Страница 54: ...SAE net continuous kW HP min rpm 25 0 33 5 3000 Max torque SAE Gross intermittent N m lbf ft min rpm 110 81 0 2600 Governor type Electronic Governor Ignition system Full transistor battery ignition ty...

Страница 55: ...5 43 6 3000 30 6 41 0 3000 SAE net continuous kW HP min rpm 25 0 33 5 3000 Max torque SAE Gross intermittent N m lbf ft min rpm 117 86 3 2400 110 81 0 2600 Governor type Electronic Governor Ignition s...

Страница 56: ...46 9 2700 32 9 44 1 2400 SAE net intermittent kW HP min rpm 31 6 42 4 2700 30 0 40 2 2400 31 6 42 4 2700 30 2 40 5 2400 SAE net continuous kW HP min rpm 27 0 36 2 2700 25 0 33 5 2400 Max torque SAE G...

Страница 57: ...2700 32 9 44 1 2400 SAE net intermittent kW HP min rpm 31 6 42 4 2700 30 0 40 2 2400 31 6 42 4 2700 30 2 40 5 2400 SAE net continuous kW HP min rpm 27 0 36 2 2700 25 0 33 5 2400 Max torque SAE Gross...

Страница 58: ...43 6 2700 30 4 40 8 2400 SAE net intermittent kW HP min rpm 29 6 39 7 2700 28 1 37 7 2400 SAE net continuous kW HP min rpm 25 0 33 5 2700 23 0 30 8 2400 Max torque SAE Gross intermittent N m lbf ft mi...

Страница 59: ...t intermittent kW HP min rpm 31 6 42 4 2700 30 2 40 5 2400 29 6 39 7 2700 28 1 37 7 2400 SAE net continuous kW HP min rpm 27 0 36 2 2700 25 0 33 5 2400 25 0 33 5 2700 23 0 30 8 2400 Max torque SAE Gro...

Страница 60: ...ittent kW HP min rpm 41 0 55 0 2700 38 5 51 6 2400 41 5 55 7 2700 39 4 52 8 2400 SAE net continuous kW HP min rpm 35 0 46 9 2700 32 5 43 6 2400 Max torque SAE Gross intermittent N m lbf ft min rpm 171...

Страница 61: ...intermittent kW HP min rpm 41 0 55 0 2700 38 5 51 6 2400 41 5 55 7 2700 39 4 52 8 2400 SAE net continuous kW HP min rpm 35 0 46 9 2700 32 5 43 6 2400 Max torque SAE Gross intermittent N m lbf ft min...

Страница 62: ...2400 SAE net intermittent kW HP min rpm 38 0 51 0 2700 36 1 48 4 2400 SAE net continuous kW HP min rpm 32 3 43 3 2700 30 7 41 2 2400 Max torque SAE Gross intermittent N m lbf ft min rpm 160 118 0 1200...

Страница 63: ...ntermittent kW HP min rpm 41 5 55 7 2700 39 4 52 8 2400 38 0 51 0 2700 36 1 48 4 2400 SAE net continuous kW HP min rpm 35 0 46 9 2700 32 5 43 6 2400 32 3 43 3 2700 30 7 41 2 2400 Max torque SAE Gross...

Страница 64: ...SAE net intermittent kW HP min rpm 57 8 77 5 2600 62 2 83 4 2600 SAE net continuous kW HP min rpm 49 5 66 4 2600 53 0 71 1 2600 Max torque SAE Gross intermittent N m lbf ft min rpm 256 188 9 1400 290...

Страница 65: ...0 SAE net intermittent kW HP min rpm 57 8 77 5 2600 60 4 81 0 2600 SAE net continuous kW HP min rpm 49 5 66 4 2600 Max torque SAE Gross intermittent N m lbf ft min rpm 256 188 9 1400 280 206 5 1200 Go...

Страница 66: ...intermittent kW HP min rpm 57 8 77 5 2600 SAE net continuous kW HP min rpm 48 0 64 3 2600 Max torque SAE Gross intermittent N m lbf ft min rpm 269 198 4 1200 Governor type Electronic Governor Ignitio...

Страница 67: ...ttent kW HP min rpm 62 2 83 4 2600 57 8 77 5 2600 SAE net continuous kW HP min rpm 53 0 71 1 2600 48 0 64 3 2600 Max torque SAE Gross intermittent N m lbf ft min rpm 290 213 9 1200 269 198 4 1200 Gove...

Страница 68: ...SAE net continuous kW HP min rpm 49 5 66 4 2600 53 0 71 1 2600 Max torque SAE net intermittent N m lbf ft min rpm 247 182 2 1400 281 207 3 1200 Governor type Electronic Governor Ignition system Full...

Страница 69: ...73 2 2600 SAE net continuous kW HP min rpm 49 5 66 4 2600 Max torque SAE net intermittent N m lbf ft min rpm 247 182 2 1400 271 199 9 1200 Governor type Electronic Governor Ignition system Full transi...

Страница 70: ...SAE net continuous kW HP min rpm 48 0 64 3 2600 Max torque SAE net intermittent N m lbf ft min rpm 261 192 5 1200 Governor type Electronic Governor Ignition system Full transistor battery ignition ty...

Страница 71: ...inuous kW HP min rpm 53 0 71 1 2600 48 0 64 3 2600 Max torque SAE net intermittent N m lbf ft min rpm 281 207 3 1200 261 192 5 1200 Governor type Electronic Governor Ignition system Full transistor ba...

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