TM 5-6115-400-12
in an amount sufficient to wear out the turbocharger
oil is contaminated, turbocharger damage can result.
bearings or when the contaminating particles are large
Some examples of instances where the filter will be
enough to plug the internal oil passages and starve the
bypassed are:
turbocharger for oil.
(1) When the oil filter is clogged and the
c. Use of Time Totalizing Meter to Determine
bypass valve is open.
Lubricating Intervals. The established intervals in the
(2) When a lube valve or filter bypass valve
lubricating chart and maintenance instructions are given
malfunctions (as a result of worn or
in service hours. The intervals indicated are for normal
binding components).
service.
Contaminated oil will actually cause damage to the
turbocharger bearings when this oil is permitted to enter
Section III. PREVENTIVE MAINTENANCE CHECKS AND SERVICES
operation were continued.
All deficiencies and
3-5. General
shortcomings will be recorded together with the
To insure that the generator set is ready for operation at
corrective action taken on DA Form 2404 at the earliest
all times, it must be inspected systematically, so that
possible opportunity.
defects may be discovered and corrected before they
result in serious damage or failure. The necessary
Preventive Maintenance Checks and Services to be
3-6. Preventive Maintenance Checks and Services
performed are listed and described in paragraph 3-6.
This paragraph contains a tabulated listing of preventive
The item numbers indicate the sequence of minimum
maintenance services which must be performed by the
inspection requirements. Defects discovered during
operator. The item numbers are listed consecutively
operation of the unit shall be noted for future correction,
and indicate the sequence of minimum requirements.
to be made as soon as operation has ceased. Stop
operation immediately if a deficiency is noticed during
operation which would damage the equipment if
Table 3-2. Preventive Maintenance Checks and Service
Interval
B - Before operation
A - After operation
M - Monthly
Item
Operator
Org.
D - During operation
W - Weekly
Q - Quarterly
Number
Daily
B
D
A
W
M
Q
Item to be inspected
Procedure
Reference
1
*
*
*
*
*
V Belts
Proper adjustment for drive
belts is a deflection of 1/2 to
3/4 inches midway between
2
*
*
*
*
*
*
Controls and in-
Inspect for damage or loose
struments
mounting. Check for proper
operation. Normal operation
readings for instruments are
as follows:
Ammeter-Green portion of scale
Coolant temperature-160 to 200F
Oil pressure-30 to 60 psi
Voltmeter-120/208-24/416 volts
AC Ammer-100% maximum
Wabtmter-200 KW maximum
Frequency mete--50/60 cycles
Fault indicator-All lights out
3-5