TM 9-4940-549-14&I
Table 3.1. Operator/Crew Preventive Maintenance Checks and Services
B-Before Operation
D-During Operation
A-After Operation
Interval
Item to be Inspected
and
Procedure
Sequence No.
B
D
A
8
Batteries
Remove corrosion. Inspect for cracks and
leaks. Tighten loose cables and mountings.
Fill to 3/8-in. above plates with distilled
water. Clean vent hole. In freezing weath-
er run engine a minimum of 1 hour after ad-
ding distilled water.
9
Hydraulic System
Add oil as required. Check for leaks.
10
17
Welder Controls and Instruments
Inspect for damage and loose mounting.
With unit operating, check for proper
operation.
Normal operating readings are as follows:
AC Voltmeter: 240-volts
Frequency Meter: 50-60 hertz
DC Voltmeter: Terminal voltage
DC Ammeter: Not to exceed 300 amps
11
18
Engine Controls and Instruments
Inspect for damage and loose mounting.
With unit operating, check for proper
operation.
Normal operating readings are as follows:
Water temperature gage: 180-195F.
Oil pressure: 40-60 psi
Battery generator indicator:
pointer to green
1,800 rpm at 60 hertz
3-3
