w a s h grease or oil from all metal
or collapsed, not torn or cut, not
parts of the test stand.
(b) U s e clean water or a solution of
(2) Inspection of a unit to see that it is
either pound of soap chips or 6
correctly assembled or stowed is usu-
ounces of painted surface detergent
ally a visual inspection to see if the
to 1 gallon of hot water for all parts
u n i t is in its normal position in the
and overall general cleaning of
vehicle, and if all its parts are present
p a i n t e d surfaces.
and in their correct relative position.
(c) A f t e r p a r t s a r e c l e a n , d r y t h e m
(3) Inspection of a unit to determine if it
t h o r o u g h l y . Apply a light film of
is "secure" i s usually an external
visual examination or a check by hand,
wrench, o r p r y - b a r f o r l o o s e n e s s .
polished surface to prevent misting.
Such an inspection must include any
(d) Before installing new parts, remove
any rust-preventive compound, pro-
ing wires, or cotter pins as well as any
t e c t i v e grease, etc.; prepare as re-
connecting tubes, hoses, or wires.
quired (oil seals, etc.) ; and for those
(4) By "excessively worn" is meant worn
p a r t s requiring lubrication apply
beyond serviceable limits or to a point
t h e lubricant prescribed in the lu-
likely to result in failure if the unit is
b r i c a t i o n chart (fig. 62).
not replaced before the next scheduled
( 2 ) Electrical parts. Use technical tri-
inspection. Excessive wear of mating
chloroethane (methyl chloroform)
parts of linkage connection is usually
(0-T-620) for cleaning electrical
evidenced by too much play (lash or
parts. Clean painted parts and plastics
lost motion). It includes illegibility as
by wiping, brushing, or spraying but
applied to markings, data and caution
n e v e r by immersing or soaking in
p l a t e s , and printed matter.
trichloroethane. Do not use trichloro-
(5) W h e r e the instruction "tighten" ap-
ethane for cleaning leather or rubber
pears in the procedure, it means
p a r t s (other than neoprene).
tighten with a wrench, even if the item
(3) Meter lens.
appears to be secure.
(a) G e n e r a l . A static charge may build
up in the lens of the meters and it
sary" or "replace if necessary" are not
will have an effect on the accuracy
used in the specific procedures. It is
o f the meter indication as well as
u n d e r s t o o d that whenever inspection
t h e zero setting of the instrument.
r e v e a l s the need of adjustment, re-
The rate at which this charge builds
p a i r s , or replacement, the necessary
up in the meter lens will vary, de-
action will be taken.
pending upon the atmospheric con-
d i t i o n s in which the test stand is
being used, as well as being effected
a. General. Any special cleaning instructions
b y rubbing of the windows to re-
r e q u i r e d for specific components or parts are
move any accumulation of dust.
c o n t a i n e d in the pertinent section. General
(b) Inspection. To check the pressure
c l e a n i n g i n s t r u c t i o n s a r e o u t l i n e d i n (1)
of a static charge in the meter win-
t h r o u g h (4) below:
dows, hold the hand as close as pos-
(1) Metal parts.
sible to the window, without touch-
(a) Use self-emulsifying solvent clean-
ing it, and move the hand toward the
end of the scale. If there is a charge
m i n e r a l spirits paint thinner (TT-
present, the meter pointer will fol-
T-291), or dry-cleaning solvent
l o w the hand for a short distance
a n d will not return to its original
(Stoddard) (P-S-661) to clean or