WHEEL SHOE AND CAP REPLACEMENT:

WHEELS:

WHEEL SHOE AND CAP REPLACEMENT:

WHEEL BALLAST:

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 [93C]. 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

electrode.

following ballast weights can be achieved:

4. Weld wheel shoe ends together with National

DIESEL FUEL

2500 lbs /1200 kg

Standard No. 116 .035" (0, 8 mm) diameter wire or

WATER

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

WATER

4200 lbs 11900 kg

250 to 280 amps. If not available, use 'McKay 1/8"

(3 mm) diameter 110-18 or equivalent.

K300

Rev. 760501

20-5.2