PRONAR T679/5, Operator'S Manual, Page: 85 / 116

SECTION 5 PRONAR T679/5
5.13
ATTENTION
Incorrectly adjusted brake may cause rubbing of brake shoes against brake
drums, which may lead to faster wear of brake linings and/or brake overheating.
TABLE 5.1 Operating data of pneumatic cylinder
NOMINAL CYLINDER STROKE
L [mm]
MINIMUM CYLINDER
STROKE
L
MIN
[mm]
MAXIMUM CYLINDER
STROKE
L
MAX
[mm]
75 25 45
INSPECTION
•
Check technical condition of brake every 6 months.
•
After repair of braking system.
•
In case of uneven trailer wheels braking.
Required maintenance activities for pneumatic brakes
Hitch the trailer to tractor.
Turn off tractor engine and remove key from ignition.
Immobilise tractor with parking brake.
Make sure that the manure spreader's brakes are not engaged.
Secure the trailer with wheel chocks.
Make a line (A) on the brake cylinder rod (1) to indicate the position of the
maximum withdrawal of the brake cylinder rod – figure (5.8).
Press the tractor brake pedal and mark the position of the maximum extension
of the brake cylinder piston rod with a line (B).
Measure the distance between lines (A) and (B). If the brake cylinder piston
stroke is outside the proper operating range, adjust the expander arm.
Dismantle brake cylinder fork pin.