EMAK Oleo-Mac OM 105J Manuel D'utilisation Et D'entretien page 59

► Using an appropriate wrench, turn nut (2) so that the tension on the spring (3) is completely released. Then remove
the belt (1) from the belt pulley of the electromagnetic engine transmission.
6.3.10b
► Slide the spring pins (4) from both the rear mowing deck suspension shaft pins (5). Screw out the nut (6) from the
front shaft pin and pull out the shaft pin (7). Using pliers, slide out both pins (5). For the the mowing deck mulching
6.3.10c
option, first remove the part of the mulching flap lever that extends above the floor of the machine.
► Slowly pull out the mowing deck to one side of the machine.
6.3.10d
6.3.11 MAINTENANCE OF STEERING
Regularly check that there is not excessive looseness between the cogged steering segment and the steering wheel
pinion. If higher looseness is identified, it is necessary to limit it. Procedure for limiting (adjusting) looseness:
► Lift the hood.
► Loosen two nuts M12 (1) on the bolt of the eccentric.
6.3.11
► Place a suitable wrench on to the hexagon of the eccentric (2) and turn it until looseness is limited to a minimum.
► Tighten both nuts M12 (1) using a torque of 35 - 45 Nm.
Neglecting this maintenance may result in damage to steering components.
6.3.12 CHECKING AND ADJUSTING THE TRAVEL DRIVE BELT
Regularly check the tension of the travel drive belt. The belt is correctly tensioned when a force of 4 kP acting on the
middle distance between the belt pulleys (1) and (3) results in the belt bending by approximately 1.5 cm.
When the amount of bend increases, it is necessary to adjust the tension.
Positions in the picture are:
(1) Engine belt pulley
6.3.12a
(2) Guide belt pulley
(3) Tensioning belt pulley
(4) Transmission belt pulley
To measure force you can use a standard mechanical dynamometer available in stores selling such products.
Adjust the tension of the belt by tightening nut (6) so that the spring (5) is stretched to a length of 90±1 mm.
6.3.12b
Do not over-tension the belt above this level, this will reduce its lifetime and may also cause damage to the transmission!
6.3.13 REPLACING BELTS
Replacing drive belts is a relatively demanding operation, which needs to performed by an authorised service centre.
6.3.14 REPLACING WHEELS
Before replacing one of the wheels, park the machine on a horizontal and rigid surface, turn off the engine and remove the key from
the ignition. Perform the replacement as follows:
► Lift the machine using an appropriate jack on the side where you will perform the replacement. Locate the jack
under a solid part of the frame or on the arm of the transmission. Using a wooden block, secure the machine to
prevent it rolling off.
6.3.14
► Remove the protective cover (1) from the wheel (only the front wheels).
► Using a suitable screwdriver remove the retaining ring (2) and remove the washer (3).
When reattaching the wheel proceed in the reverse sequence to its removal. Before attaching the wheel clean all parts and lightly
grease the shaft with a plastic lubricant. Especially for wheels on the rear axle this lubrication is essential for the subsequent
removal of the wheel. In the event that lubrication is not performed the subsequent attachment may be very difficult.
When attaching the rear wheel pay attention to the mutual alignment of the pin on the shaft and the groove on the wheel.
6.3.15 REPAIRING A TYRE PUNCTURE
The machine is equipped with tubeless tyres. In the event of a puncture have it repaired at a specialised tyre repair shop or at an
authorised Seco machine service centre.
59