6 . SPECIFICATIONS
6.7
Challenger MT500B EU
6
6.4 - COOLING
6.5 - TRANSMISSION
6.6 - FINAL DRIVE UNITS
6.7 - REAR PTO
6.8 - FOUR-WHEEL DRIVE FRONT AXLE
Operating mode: Centrifugal pump and pressurised radiator. Thermostat regulation. Opening
temperature: 82°C. Thermostat control.
Fan: Viscostatic clutch fan
Gear driven water pump.
Belt: Viscostatic or vistronic disengagement according to models.
Fan driven water pump.
Belt deflection Trapezoid belt: 10 to 15mm on longest span
Gearbox: continuous hydrostatic and mechanical variation:
- slow forward travel: transmission mainly hydrostatic.
- fast forward travel: transmission mainly mechanical.
• With DynaVT: - continuous speed variation from 0.03 to 50 kph in forward position (maxi-
mum speed limited to 30, 35, 40 or 50 kph depending on country).
- continuous speed variation from 0.03 to 38 kph in reverse position.
• Filtration: 150 micron suction strainer, located to the right of the centre housing.
External main high-pressure 15 micron filter, to the right of the centre hous-
ing.
• Bevel gear / differential reduction ratios: 4.182 for all models.
Drive units: Epicyclic, located in the rear axle housings.
Reduction ratios: MT525B/535B normal assembly (HA 110): 7.000
MT525B/535B reinforced assembly, MT545B (HA 130): 8.200
MT555B/565B/MT575B (HA 160): 8.600
Flanged shaft: 540 or 1000 rpm at engine 2000 rpm, (Ø35 mm (1”3/8 in) 6 or 21 splines).
540/540E/1000 rpm at engine 2000 rpm, (Ø35 mm (1”3/8 in) 6, 20 or 21 splines).
Control: By switches located in the cab, with PTO brake.
With or without PTO stop button on rear fenders.
Clutch mechanism: Electrohydraulic, electrically actuated by push-button in the cab.
Differential lock: Multidisc differential lock with electrohydraulic control.
Gear ratios: 20.19 (11.625), 20.22 (11.625), 20.29 (13.846), 20.43 (13.846).
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