PRONAR PRONAR N262, Operator'S Manual

Page: 107 / 145

SECTION 5 Pronar N262 N262/1
5.13
Brakes adjustment involves changing setting of axle shaft expander arm (1) in relation to
expander shaft (2). To do this adjust the shaft position (1) with the aid of retaining bolt (3) in
appropriate direction:
forward, if braking is too early,
backward, if breaking is too late.
Adjustment should be conducted separately for each wheel. After proper brake adjustment,
at full braking, the expander arms should create the angle of 90° with the cylinder piston, and
the stroke should amount to approximately half the length of the total stroke of the piston.
After the brake is released, expander arms may not be supported on any structural elements,
because insufficient withdrawal of a piston ram may cause abrasion of brake shoes in drum
and result in overheating manure spreader brakes. Expander arms, placed on one axle, must
be positioned in parallel with regard to each other at full braking. If this is not so, adjust the
position of the expander, which has the longer stroke.
The main brake system should be inspected annually and in case of need should be
adjusted.
During dismantling of cylinder fork remember or mark the original setting of the cylinder fork
pin. The mounting position is selected by the Manufacturer and may not be changed.
TAB. 5.2 Position of fork pin in expander arm
PIN POSITION [mm]
TYPE OF BRAKE SYSTEM
FRONT AXLE (L
1
) REAR AXLE
(L
1
)
Double line pneumatic system
Double line pneumatic system with ALB.
127
127
152
152
5.2.9 CHANGE OF PARKING BRAKE CABLE AND ADJUSTMENT OF CABLE
TENSION
Proper operation of the parking brake is dependent on the effectiveness of the front axle
brake and the correct brake cable tension.