WHEEL SHOE AND CAP REPLACEMENT:
1. To remove wheel shoes or wheel caps use
When soil compaction requirements cannot be met
3/16" (5 mm) diameter arc-air stick (Canox 36022-
by conventional means, ballast may be added to the
033 or equivalent) on DC straight polarity at
wheels to increase the applied compacting forces.
maximum voltage and 250 to 280 amps. Also
Ballast material such as diesel fuel or calcium
required is an air line with approximately 80 psi (5, 6
chloride may be added through the four cover plates
kg/sq. cm) pressure.
on the side of the wheel. The wheel should be
2. After shoes or caps have been removed,
removed and put on its side to ensure completely
clean mounting surface on wheel or wheel shoe with
filling the wheel.
grinder and wire brush.
Note: Prior to using any stick electrode, preheat
components to approximately 200 F [93° C]. On all
flex core wire use 35 C. F. CO and on solid wire
Warning: Always completely fill all wheels as surging
use 8 C. F. CO plus 20 C. F. argon.
caused by partially filled wheels may result in
3. Welding shoe castings to steel wheel drum
transmission, axle or driveline damage.
should be done with 3 1 32" (2, 5 mm) diameter flux
The total ballast volume for a K300 is 360 Imp.
core wire. If not available, use low hydrogen 7018
gallons (430 US gal 1630 liters). At this volume the
following ballast weights can be achieved:
4. Weld wheel shoe ends together with National
2500 lbs /1200 kg
Standard No. 116 .035" (0, 8 mm) diameter wire or
1/ 8" (3 mm) diameter 7018 electrode.
(with anti-freeze, anti-rust) 3500 lbs / 1600 kg
5. When welding wheel caps to shoes, use 1
CALCIUM CHLORIDE AND
16" (1, 6 mm) T-5 flux core wire at 26-27 volts and
4200 lbs 11900 kg
250 to 280 amps. If not available, use 'McKay 1/8"
(3 mm) diameter 110-18 or equivalent.