TM 5-3825-213-20
Section III. PREVENTIVE MAINTENANCE SERVICES
Service
19. General
Inspe
Quar
a. Preventive maintenance is performed by
ction
terly
organizational maintenance personnel at quarterly
intervals. A quarterly interval is the equivalent to 3
4
Replace a defective fire extinguisher.
calendar months of 250 hours of operation, whichever
Publications. See that a copy of TM 5-3825-
5
5
occurs first.
213-10, current lubrication order, and
b. The preventive maintenance services to be
Standard Form 91, or DA Form 285 are
performed at quarterly intervals are listed consecutively
on or with the equipment and in
(starting with number 1) and are described in paragraph
serviceable condition.
20. The number listed under "inspection" indicates the
6 Appearance. Inspect general appearance of
6
minimum requirements for the equipment.
the snow removal unit, paying special
attention to cleanness, legibility of
20. Quarterly Preventive Maintenance Services
identification markings, and condition of
paint.
Service
6 See that deficiencies are corrected or
reported to field maintenance, 3d
Inspe Quar
echelon.
ction terly
GENERAL
7 Modification.
See that all available
7
Before-operating services.
Inspect and
1
1
modification work orders applying to the
perform services listed in daily before-
snow removal unit have been completed
operation services (TM 5-3825-213-10).
and recorded on DA Form 478 and DA
Lubrication. Inspect the snow removal unit
2
2
Form 5-73A as applicable.
for missing or damaged lubrication fittings
ENGINE
and lines.
Inspect lubricant level in
8 Cylinder head, manifold, muffler, exhaust
8
gearcases. Inspect for lubricant leaks
pipe. Inspect cylinder head, manifolds,
from oil lines and gearcases, and for
and exhaust pipe for leaks, loose
defective oil and grease seals.
mounting bolts and nuts, and defective
2
Lubricate the snow removal unit as specified
gaskets.
in current lubrication order (LO 5-3825-
213-20). Replace missing or damaged
mounting bolts and nuts.
Replace
fittings.
defective gaskets (pars. 172 and 178).
Tools and equipment. Inspect condition of
3
3
9 Valve mechanism. If excessive tappet noise
9
tools and equipment assigned to the unit.
or loss of power is noticed, measure the
Inspect condition and mounting of toolbox
valve clearance with engine cold. Correct
or compartment.
clearance for the intake valve is 0.015
3
See that tools and equipment assigned to the
inch and 0.020 inch for the exhaust valve.
snow removal unit are clean, serviceable,
9 Adjust the valve clearance, if necessary (par.
and properly stowed or mounted. See
that toolbox or compartment is in good
10 Crankcase and breathers.
Inspect the
10
condition and closes and fastens
crankcase for leaks. Inspect crankcase
properly.
breather for dirt and insecure mounting.
Fire extinguishers. Inspect a carbon dioxide
4
4
10 Correct or report any leaks noticed to field
or carbon tetrachloride fire extinguisher
maintenance, 3rd echelon.
Clean
for improper charge or damage. Weigh a
breather if necessary (TM. 5-3825-213-
monobromotrifluoromethane type fire
10).
extinguisher and replace cylinder if gross
11 Oil filters and oil cooler. Inspect the oil filters
11
weight has decreased 4 ounces or more.
and oil cooler for loose mountings, leaks,
Lubricate cylinder neck threads with 1
or damaged lines.
drop of OE 30 oil before reassembly.
21