TP-6200 10/12148 Section 3 Scheduled Maintenance
13. Place the generator set master switch to the RUN
position to start the generator set. Refer to the
respective generator set operation manual as
needed.
14. Listen and observe the fan operation.
15. Immediately shut down the generator set if
abnormal noise or fan assembly vibration is
observed. Correct the problem and go back to
step 13.
16. After several minutes of generator set operation
without abnormal noise or vibration, shut down the
generator set by placing the generator set master
switch to the OFF/RESET position.
3.9 Radiator Expansion JointLoosening—Initial Setup Only
Loosen the radiator expansion joint nuts on
1200--2000kW generator sets that have radiators
manufactured by YoungRadiator Company. Expansion
joints located on each side of the radiator permit
differential thermal expansion of the radiator tank. The
factory tightens the 12 expansion joint nuts before
generator set shipment. Loosen the expansion joint
nuts one full turn before running the generator set. See
Figure 3-13.
TP-5353-3
4
32
1
1. Air flow
2. Expansion joint nuts for rear tank, left side
3. Expansion joint nuts for front tank, left side
4. Top front of radiator
Figure 3-13 Expansion Joint Nuts, Top Left Side of
Radiator, Typical
3.10 Radiator Fan BearingLubrication
The following procedure applies only to 1200 kW and
larger generator sets. Lubricate the radiator fan shaft
and idler shaft bearings at every engine oil change to
avoid bearing damage. Lubricate the bearings every
200 hours of operation when the generator set runs in
ambient temperatures below 29°C(85°F) or when the
generatorset runs in a dusty and/or humid environment.
Lubrication and Drive Belt Adjustment Procedure
Lubricate the fan shaft and idler shaft bearings with a
lithium-complex base, multi-purpose grease with
antirust, antifoam, and extreme-pressure additives
havinga minimum dropping point of 204°C (400°F). Use
Mobil Mobilith AW2 NLGI Grade 2 or equivalent.
1. Place the generator set master switch in the
OFF/RESET position.
2. Disconnect the generator set engine starting
battery(ies), negative (--)lead first, and disconnect
power to the battery charger.
3. Remove the belt guards to expose the fan shaft and
idler shaft bearings.
4. Inject grease into the two bearings on the fan shaft
block and the two bearings on the idler shaft block
using a grease gun until a 3--6mm (0.13 --0.25 in.)
greasecolumn shows at the bearing pressure relief
port. See Figure 3-14.
Note: The fan shaft and idler shaft bearings have
pressure relief ports to prevent bearing
damage caused by overlubrication.
1
2
TP-5353-3
3
1
2
5
4
1. Grease fittings
2. Pressure relief port
3. Radiator assembly
4. Idler shaft grease fittings
5. Fan shaft grease fittings
Figure 3-14 Radiator Fan Bearings and Pressure
Relief Ports, Typical