Four Wheel Drive Tire Combinations; Rear Wheel Tire Pressures And Permissible Loads; Road Speeds - New Holland LB75.B Service Manual

SECTION 00 - SPECIF/CATIONS - CHAPTER 2 9
FOUR WHEEL DRIVE TIRE COMBINATIONS
The tires fitted to machines with optional four wheel drive have been carefully selected to match the gearing of
the transmission and axles. When renewing worn or damaged tires, always install tires of the same make, model
and size as those removed. The installation of other tire combinations may result in excessive tire wear, loss
of usable power or severe damage to drive line components. If in doubt, consult your Dealer.
REAR WHEEL TIRE PRESSURES AND PERMISSIBLE LOADS
The following charts give the approximate carrying capacity of the axle at the tire pressures indicated up to, 30
kph (20 mph).
Inflation Pressures in bar
Tire Ply
1.1
size rating
1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.2 2.3 2.4 2.6
Permissible Load Capacity Per Axle (kg)
16.9-28-R4 10
3800
4000 4200 4460 4780 4900
5090 5380 5660 5800
6190 - - -
21L-24
17.5L-24 10 3430 3740 3995 4160 4275 4530 4675 4780 4950 5200 5450 5610 5820
19.5-24-R4 10 3990 4245 4610 4220 5150 5300 5580 5805 5990 6170 6710 6710 7120
-
Inflation Pressures in lbf/ln2
Tire Ply
16 17 19 20 22 23 25
26
28 29 32
33 35 38
size rating
Permissible Load Capacity Per Axle (lb)
16.9-28-R4 10 8380 8820 9260 10275 10540 10805 11220 11860 12480 12785 13465
- - -
21L-24
17.5L-24
10 7546 8228 8789 9152 9405 9966 10285 10516 10890 11440 11990 12342 12804
19.5-24-R4 10 8800 9360 10160 10400 11360 11680 12300 12800 13200 13600 14800 14800 15700
ROAD SPEEDS
The following tables show the approximate ground speeds in km/h and miles/h at rated engine speed.
Naturally Aspirated Engine with Powershuttle Transmission
Gear Rear Tire Rear Tire
Ratio 16.9-28 19.5L- 24
km/h miles/h km/h miles/h
1st Forward 5.39 3.34 5.12 3.18
2nd Forward 8.68 5.39 8.24 5.12
3rd Forward 18.47 11.47 17.54 10.89
4th Forward 32.84 20.4 31.19 19.3
1st Reverse 6.47 3.97 6.14 3.8
2nd Reverse 10.41 6.48 8.19 5.1
3rd Reverse 22.16 13.7 21.04 13.07
4th Reverse 39.41 24.48 37.42 23.25
Turbocharged Engine with Powershuttle transmission
Gear Rear Tire Rear Tire Rear Tire Rear Tire
Ratio
16.9-28 21L-24 19.5L-24 17.5L- 24
km/h miles/h km/h miles/h km/h miles/h km/h miles/h
1st Forward 5.16 3.2 5.16 3.2 4.9 3.04 4.62 2.87
2nd Forward 8.31 5.16 8.31 5.16 7.89 4.9 7.43 4.61
3rd Forward 17.69 11.0 17.69 11.0 16.8 10.4 15.83 9.8
4th Forward 31.45 19.5 31.45 19.5 29.86 18.6 28.13 17.48
1st Reverse 6.2 3.8 6.2 3.8 5.88 3.65 5.54 3.44
2nd Reverse 9.97 6.19 9.97 6.19 9.47 5.88 8.92 5.54
3rd Reverse 21.22 13.17 21.22 13.17 20.15 12.5 18.98 11.8
4th Reverse 37.74 23.45 37.74 23.45 35.84 22.26 33.76 21.0
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