TM 10-3950-206-12
Table 2-1. Freezing Points, Composition, and Specific Gravities of Military
Antifreeze Materials
Lowest
Pints of
Ethylene glycol
expected
inhibited
coolant solution
ambient
glycol per
Compound, antifreeze
specific gravity
at 68F.
2
3
temp.
gal. Of
arctic
1
"F.
coolant
+20
1-1/2
Issued full strength and ready mixed
1.022
+10
2
for 0 to -65F. temperatures for
1.036
0
2-3/4
both initial installation and re
1.047
-10
3-1/4
plenishment of losses.
1.055
-20
3-1/2
1.062
-30
4
1.067
-40
4-1/4
1.073
-50
Arctic Antifreeze DO NOT DILUTE WITH WATER
-60
preferred OR ANY OTHER SUBSTANCE
-75
1
Maximum protection s obtained at 60 percent by volume (4.8 pints of ethylene glycol per gallon of solution.)
2
. Military Specifications MIL-C-11755 Arctic type, nonvolatile antifreeze compound is intended for use in the cooling system of liquid-cooled internal
combustion engines. It is used for protection against freezing primarily in Arctic region where the ambient temperature remains- for extended period
close to -40F. or drop below, to as low as -90F.
3
. Use an accurate hydrometer. To test hydrometer, use 1 part ethylene glycol antifreeze to 2 parts water. This should produce a hydrometer reading
of 0F.
Note. Fasten a tag near the radiator cap indicating the type of anti-freeze.
and tighten clamp.
b. Remove the capscrew and lockwasher s curing
(3) Position handle on shaft and secure with nut
the access door and open.
and bolt wedge.
c. Remove the spotlight assemblies and inspect for
any damage or missing parts. d. Install the spotlight
(4) Connect wire connectors to leads provided.
assemblies as follows:
(1) Remove nut (12, fig. 4-17) and bolt wedge (14)
2-3. Installation or Setting-Up Instructions
that secures handle (13) to shaft (11). Remove handle
from shaft.
(2) Insert shaft through mounting bracket clamp
Section II. MOVEMENT TO A NEW WORKSITE
spark plugs with the preservative oil and reinstall. A
2-4. Dismantling for Movement
caution tag showing "Engine Preserved Do Not Crank"
a. Comparatively short distances of movement to a
will be prepared and attached to an operator's control.
new worksite will not require shipping preparations or
(3) Drain fuel tank and fog interior with
dismantling.
preservative oil conforming with Specification MIL-L-
b. For long-distance shipment of crane or for limited
21260, grade 2. Drain excessive oil and reinstall plug.
storage, prepare crane as follows:
(4) Drain the entire cooling system. One caution
(1) Fill the crankcase to operating level with
tag marked "RADIATOR EMPTY" will be affixed to filler
preservative oil conforming to Specification MIL-L-21260,
neck of radiator and one to steering wheel of crane.
grade 2. Operate the engine at a fast idle long enough to
(5) Seal openings that permit direct entry of water
bring it up to operating temperature. Do not drain the oil
to interior of crane components with tape conforming to
from crankcase.
Specification PPP-T-60, type III, class 1.
(2) After engine has cooled to a cylinder head
(6) Retract hydraulic rams as far as linkage
temperature of not more than 100F., re move spark
permits.
Coat exposed machined surfaces with
plugs. Rotate crankshaft with starting motor and spray 2
compound conforming to Specification MIL-C-11796,
ounces of lubricating oil conforming to Specification MI[L-
21260, grade 2 into each cylinder. Coat threaded end of
2-2
