Challenger MT515D, MT525D, MT535D, MT545D Tractor Repair Workshop Manual

Manual for: AGCO Challenger
MT500D AutoPower IV Series
MT500D AutoPower VI Series
MT500D TechStar CVT Series
EAME, North America – English
Format: PDF
April 2012
No. 4373224M2

Challenger MT515D, MT525D, MT535D, MT545D Tractor Workshop Manual : 4226 Pages
Technician Service Book MT500D (Schematics and Electronics) : 763 Pages
Parts Catalog TechStar CVT and AutoPower VI: 594 Pages & 466 Pages
Maintenance Manual MT515D, MT525D, MT535D, MT545D: 196 Pages
Spicer Dana Axle 735, 740, 750, 755 Axle Service Manual: 176 Pages

Challenger MT500D Series Manual TABLE OF CONTENTS

• Introduction
• Separation of assemblies
• Engine
• Clutch
• Gearbox
• Rear Axle
• Power Take off
• Front Axle
• Hydraulics
• Electricity
• Electronics
• Cab
• Accessories
• Services Tools

MT515D, MT525D, MT535D, MT545D Manual  Principles of operation

Differential
The pinion is driven by the gearbox output shaft, attached to the connecting shaft by splined sleeves. The helical crownwheel and pinion assembly transmits the drive to the trumpet final drive units. A differential lock system with a dog clutch and activated by hydraulic pressure is incorporated into the unit.
The differential lock is controlled by the Autotronic.
4-wheel drive clutch
A driving gear attached to the pinion drives the counterdriven gear of the 4WD clutch assembly. Drive is then transmitted via the Belleville washers to the clutch output shaft.
The 4WD clutch is hydraulically activated. There is therefore no possibility of accidental disengagement of the 4WD clutch in the event of hydraulic failure.
Power take-off drive line
The rotation of the shaft passing through the gearbox, proportional to engine speed, is transmitted to the hydraulic clutch located at the front of the centre housing.
In the clutch engaged position, drive is transmitted by an intermediate shaft and a set of driving and driven gears to the 540 or 1000 rpm PTO shaft. Speeds are selected by a system of interchangeable shafts or by shifting.
A hydraulic brake mechanism stops the rotation of the PTO shaft in the disengaged position.
Two additional options are offered:
– 4-speed (economy) PTO;
– GSPTO.
Hand brake assembly
A brake assembly comprising two discs and an expander mechanism is fitted to the gear.
Main brakes
Two pistons fitted laterally into two cavities in the centre housing act on two discs attached to the trumpet housing input sun gears. The brake pistons are activated hydraulically.