4--1 T- 343
SECTION 4
SERVICE AND PREVENTIVE MAINTENANCE
4.1 INTRODUCTION
This s ection covers service for the generator set and
general engine service. Refer to the Kubota engine
workshop manual, S ection 1.1, for other engine
servicing.
WARNING
Beware of moving V-belt and belt driven
components.
4.2 PREVENTATIVE MAINTENANCE SCHEDULE
A tabular listing of the recommended preventative
maintenance activities and schedule is provided in
Table 4-1.
4.3 BATTERY SERVICE
When replacing the battery, determine whether the unit
was s upplied with a mat in the battery tray. If so
equipped, the mat must also be replaced.
4.4 ENGINE SERVICE AND COMPONENTS
4.4.1 Bleeding the Fuel System
The unit is equipped with a mechanical fuel lift pump,
mounted on the engine next to the injection pump. The
fuel system is a closed circuit, which will require
bleeding if loss of fuel has occurred. To fill and bleedthe
system, do the following:
1. Turn fuel bleed valve (Red, see Figure 1-3) counter-
clockwise until fully opened.
2. Turn the top of the manual priming pump (see
Figure 4-1) counter-clockwise to unlock it, and then
rapidly hand pump the manual plunger until a posi-
tive pressure (resistance) is felt. This will indicate
fuel flow .
3. Depress and turn the top of the manual priming
pumpclockwisetolockinplace.
4. Start engine. (Refer to section 2.3).
5. When engine is running properly, turn fuel bleed
valve clockwise until fully closed.
4.4.2 Servicing Fuel Pump Internal Filter
The internal fuel filter may become plugged orrestricted
with foreign particles or wax, which can develop if the
wrong grade of fuel is used or untreated fuel is used in
cold weather, contaminating the fuel. If the internal filter
is plugged, the engine will lose power. Therefore, the
filter must be cleaned on a regular basis. The quality of
the fuel will affect the filter cleaning schedule (refer to
section 4.2).
1. Turn nut(item 1) c ounter-clockwise to loosen andre-
move.
2. Remove banjo fitting (item 2) and let it hang loose,
making sure to keep copper rings (item 4) for re-
placement.
3. Turn filter (item 3) counter-clockwise and remove.
Check and clean.
4. To install, reverse steps 1 through 3.
5
1
2
3
4
1
1. Nut
2. Banjo
3. Filter
4. Copper Rings
5. Manual Priming Pump
Figure 4-1 Mechanical Fuel Pump
4.4.3 Fuel Filter
The full flow filter is located on the generator set frame
(see Figure 1-3).
To renew , remove the nut on top of filter housing, then
remove the bowl housing and filter element. Install new
filter element. Lightly oil new gasket with lube oil and
replace. Reassemble housing.
4.4.4 In--Line Fuel Filter
Loosen bowl by turning counter--clockwise. To renew,
remove in--line fuel s trainer, check and clean, and
replace.
4.4.5 Cooling System
To ensure adequate c ooling, the radiator must be clean,
externally and internally. To service the cooling system,
do the following:
1. Remove all foreign material from the radiator coil by
reversing the normal air flow. Compressed air or wa-
ter may be used as a cleaning agent. It may be nec-
essary to use warm water mixed with any good com-
mercial d ishwasher detergent. If adetergent is us ed,
rinse coil(s) with fresh water .
2. Drain coolant completely by opening drain cock and
removing radiator cap.
CAUTION
Never pour cold water into a hot engine.
3. Closedrain c ockand f illsystemwithclean, untreated
water to which between 3% and 5% of an alkaline
base radiator cleaner should be added; six ounces
(dry) = 151 grams to one gallon (3.8 liter) of water.
