23PERIODIC SERVICE
ENGLISH
FUEL SYSTEM AND DIAGRAMS
BLPG fuel system
Never use LPG fuel on the WG1605-G-E3 engine. Otherwise severe damage will occur.
A All fuel connections added to this engine must be installed by qualified personnel and utilizing recognized procedures
and standards.
A These non-KUBOTA installed parts, such as hoses, fittings, and piping should be approved for LPG use and conform
to UL, CSA, NFPA, MSHA and all other applicable standards.
A For the location of the lock off valve with LPG filter and regulator assy (D-STAGE), see “Fuel system diagrams” section.
BTightening torques and leak check for LPG regulator with vaporizer
1. Each fitting must be sealed 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
Tightening torque Leak check pressure
FITTING Q'ty SIZE N-m kgf-m ft-lbs kPa Kgf/cm psi
LPG OUT (VAPOR) 1
19 mm
(3/4”) Hose
Fitting
--- --- ---
1745 15 17.8 0.15 253 2.1
LPG IN (LIQUID)* 1
1/4-18
NPTF
19.6 to 39.2 2.0 to 4.0 14.5 to 28.9
WATER IN/OUT 2
16 mm
(5/8”) Hose
Fitting
--- --- --- 210 10 2.1 0.1 29.9 1.4
EG523-8916-2_E.book 23 ページ ２０１１年１２月１９日 月曜日 午後４時５９分
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