wsm STW37 Workshop Manual page 73

STW34, STW37, STW40, WSM
Injection
CAUTION
• 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).
NOTE
• 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
Tire sizes
Slush free at −10 °C (14 °F)
Solid at −30 °C (−22 °F)
[Approx. 1 kg (2 lbs) CaCl per 4 L (1 gal) of
2
water]
Slush free at −24 °C (−11 °F)
Solid at −47 °C (−52 °F)
[Approx. 1.5 kg (3.5 lbs) CaCl
2
water]
Slush free at −47 °C (−52 °F)
Solid at −52 °C (−62 °F)
[Approx. 2.25 kg (5 lbs) CaCl
2
water]
(1) Pump
(2) Pressure Tank
(3) Compressor
(4) Air
(5) Water
G-54
68 kg (150 lbs)
72 kg (159 lbs)
per 4 L (1 gal) of
76 kg (168 lbs)
per 4 L (1 gal) of
(A) Correct: 75 % Air Compresses
Like a Cushion
(B) Incorrect: 100 % Water can not be
Compressed
9Y1211109GEG0071US0
GENERAL
9.5-22
KiSC issued 11, 2014 A