ECM SYSTEM
WG1605-G-E3,WG1605-L-E3,WG1605-GL-E3, DM
1-89
5. DIAGNOSIS
[1] FUEL SYSTEM CHECKS
INTRODUCTION
The maintenance of the engine fitted with Kubota
LPG / Natural Gas and Gasoline fuel systems, and its
related components, is critical to the life of the engine
and optimum performance, during its useful life. All
engines require a certain amount of maintenance. The
suggested maintenance requirements are contained in
this section. Industrial engines operate in various
environmental conditions, and various temperature
ranges.
• This is a recommended guide line only; each
user must assess the daily operational usage
and environmental conditions, and determine an
appropriate schedule.
In addition, the owner may have installed additional
equipment to the vehicle, which may also increase the
requirements for service on certain components.
Therefore, the owner and the service agent, should
review the operating condition of the equipment, and
determine if more frequent inspections, and
maintenance cycles maybe required.
This section of the service manual supplement,
covers the maintenance items of both the LPG / Natural
Gas and Gasoline fuel systems, which are designed and
supplied by EControls, and general information on those
items which are supplied by Kubota, and requires
regularly scheduled maintenance. For maintenance of
the base engine and or chassis, refer to the Kubota
manual which covers the maintenance of the equipment.
GENERAL LPG / NATURAL GAS FUEL TANK
MAINTENANCE
LPG / NATURAL GAS TANKS
The typical LPG / Natural Gas fuel storage cylinder
should be inspected daily or at the beginning of each
shift for any of the following.
• External leaks, external damage
• Manual service valve is fully open
• Securely mounted; inspect the securing straps for
damage, and that the securing devices are closed
and locked.
• Insure that the fuel storage cylinder is properly
positioned in the locating pin, in the tank collar, on all
horizontally mounted tanks. This will insure that the
tank pressure relief device will always be in the
correct position, to function if required.
When refueling or exchanging a cylinder, check the
following:
• Quick fill valve for thread damage
• Insure that the o-ring seal is in place
• Check the o-ring for cracks, separation or chunking;
• Replace the o-ring if necessary before refueling
• Check the service line quick coupler for any thread
damage
• Check the coupler o-ring for cracks, separation, or
chunking
• Replace the o-ring if necessary, before refueling.
• When refueling the cylinder, clean both the fill
hose and the tank connector with a clean cloth to
remove any dust, dirt or debris to prevent
contamination of the fuel system.
NEVER CUT OR WELLD ON EITHER THE LPG / NATURAL GAS
OR GASOLINE FUEL TANK. REPAIRS TO THE FUEL TANL
SHOULD ONLY BE MADE BY A CREATIFIED TANK REPAIR
FACILITY. FAILURE TO OBSERVE THIS WARNING COULD
RESULT IN SERIOUS BODILY INJURY AND OR DEATH AND
COULD RESULT IN SERIOUS PROPERETY DAMAGE.
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