MCCORMICK MTX Series - Page 200

Tyres, Wheels, Ballasting
192
Tyre Liquid Ballast
Use tyre liquid ballast as needed to provide safe
and efficient tractor operation. See Tractor Weight
Distribution on Page 185 of this manual. for
recommendations. The chart shows the liquid
weight each tyre will hold when 75 percent filled
(filled to Valve Level), with water or calcium chloride
and water solution.
Calcium chloride (CaCl
2
) keeps the water from
freezing. Water will start to freeze at 0°C.
When liquid ballast is used, inflate the tyres 0.14
bar (2 psi) more than the recommended
pressure. This will compensate for aeration that
occurs when the tyre is in motion.
When dual wheels are installed, use liquid ballast
in the inside tyres only.
IMPORTANT: The total tractor weight with all
equipment and ballast weight must never be
more than the maximum recommend operating
weight. See Maximum Permitted Operating
Weights on Page 260 of this manual. Observe
tyre capacities and any possible legal
limitations.
LIQUID BALLAST PER TYRE IN LITRES AND KILOGRAMS
TYRE SIZE
WATER ONLY
PROTECTION
TO -15
o
C
PROTECTION
TO -35
o
C
PROTECTION
TO -50
o
C
Litres
Water
Weight
kg
Litres
Water
Ca Cl
2
kg
Total
Weight
kg
Litres
Water
Ca Cl
2
kg
Total
Weight
kg
Litres
Water
Ca Cl
2
kg
Total
Weight
kg
16.9R38 317 317 296 53 349 272 114 386 257 154 411
18.4R38 390 390 364 66 430 335 140 475 317 190 507
20.8R38 509 509 475 85 560 436 183 619 413 248 661
480/70R38 337 337 314 57 371 289 121 410 273 164 437
520/70R38 414 414 386 69 455 355 149 504 336 201 537
580/70R38 539 539 503 90 593 462 194 656 437 262 699
600/65R38 474 474 443 80 523 407 171 578 385 231 616
650/65R38 586 586 547 98 645 503 211 714 475 285 760
18.4R42 435 435 406 73 479 373 157 529 353 212 564
20.8R42 633 633 591 106 697 543 228 771 514 308 822