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 Preventive Maintenance Checks and Services - Cont.
Table 2-1.
S - S e m i a n n u a l l y A - Annually
Q - Quarterly
D - Daily
W
-
Weekly
M
-
Monthly
Items To Be
Interval
Item
Procedures
Inspected/
No.
D
W
M
Q
S
A
Serviced
MACHINERY SHOP EQUIPMENT - CONT
c. Turn electrical power unit to OFF at the ship service
Arc Welding
l
30
switchboard. Tag switch "Out of Service - Do Not
Machine -
Operate." Refer to TM 55-1905-223-10.
CONT
Use filler gauge to check spark gap of 0.008 inch
d.
(0.020 cm). Adjust as necessary.
e. Remove high frequency spark gap access panel from right
side panel of arc welder unit.
Loosen pan head screw that secures each single spark
f.
gap assembly.
Insert 0.008-inch (0.020 cm) feeler gauge between spark
g.
gap contact points.
Move loosened contact point until slight drag is felt
h.
as gauge is moved between the points.
i. Tighten the loosened pan screw to secure contact point
assembly.
Repeat steps b. through e. for other spark gap contact
j.
points.
Install access panel.
k.
l.
Remove tag and turn ON electrical power at the ship
service switchboard.
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