GENERAL
STW34, STW37, STW40, WSM
G-54
Injection
• When a calcium chloride solution is used, cool it before
pouring it into the tire.
• Do not fill tires with water or solution more than 75 % of full
capacity (to the valve stem level).
The following four ways can be used to inject water or a calcium
chloride solution into tires.
1. Gravity injection (Fig. 1)
2. Pump injection (Fig. 2)
3. Pressure tank injection (Fig. 3)
4. Injection directly from top (only when water is being used).
• Once injection is completed, reset the air valve, and pump
air into the tire to the specified pressure.
Weight of Calcium Chloride Solution Filling 75 % of Full
Capacity of a Tire
9Y1211109GEG0071US0
Tire sizes 9.5-22
Slush free at −10 °C (14 °F)
Solid at −30 °C (−22 °F)
[Approx. 1 kg (2 lbs) CaCl
2
per 4 L (1 gal) of
water]
68 kg (150 lbs)
Slush free at −24 °C (−11 °F)
Solid at −47 °C (−52 °F)
[Approx. 1.5 kg (3.5 lbs) CaCl
2
per 4 L (1 gal) of
water]
72 kg (159 lbs)
Slush free at −47 °C (−52 °F)
Solid at −52 °C (−62 °F)
[Approx. 2.25 kg (5 lbs) CaCl
2
per 4 L (1 gal) of
water]
76 kg (168 lbs)
(1) Pump
(2) Pressure Tank
(3) Compressor
(4) Air
(5) Water
(A) Correct: 75 % Air Compresses
Like a Cushion
(B) Incorrect: 100 % Water can not be
Compressed
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