Fuel System And Diagrams; Lpg Fuel System; Tightening Torques And Leak Check For Lpg Regulator With Vaporizer; Ng Fuel System - Kubota WG3800-L-E5 Operator's Manual

FUEL SYSTEM AND DIAGRAMS

BLPG fuel system
Never use LPG fuel on the WG1605-G-E3 / WG1903-G-E3 /WG2503-G-E3 / WG3800-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.
FITTING Q'ty
LPG OUT (VAPOR) 1
LPG IN (LIQUID)* 1
WATER IN/OUT 2
*NOT KUBOTA supplied
BNG fuel system
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 fittings, and piping should be approved for NG use and conform to UL,
CSA NFPA, MSHA and all other applicable standards.
A For the location of the NG fuel components, see "Fuel system diagrams" section.
Tightening torque
SIZE N-m
19 mm
(3/4") Hose ---
Fitting
1/4-18
19.6 to 39.2
NPTF
16 mm
(5/8") Hose ---
Fitting
kgf-m ft-lbs
--- ---
1745 15
2.0 to 4.0 14.5 to 28.9
--- ---
PERIODIC SERVICE
Leak check pressure
kPa Kgf/cm
17.8 0.15 253 2.1
210 10 2.1 0.1 29.9 1.4
31
psi