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Pronar PT610
Checking air pressure in tyres and visual inspection of steel wheels:
5.2.8
ADJUSTMENT OF MECHANICAL BRAKES
During trailer operation drum brake linings are subjected to wear. Piston stroke extends; after
exceeding the limit value, the braking force declines.
Adjustment must be made when:
• piston rod stroke amounts to 2/3 of maximum stroke,
• expansion levers are not set in parallel to each other during braking,
• repairs are made to braking system.
Required maintenance actions
Dismount cylinder fork mounted on expander arm (1).
Dismantle expansion ring (4) and washer (3).
Mark position of expander arm (1) with regard to the shaft (2).
Dismantle arm and set it in the appropriate position.
Position washer and expansion ring. Check if elements are correctly
positioned.
• every 1 month of use,
• every week during intensive work,
• after changing spare wheel.
in direction (A), if braking is too early,
in direction (B), if breaking is too late.
5.12
SECTION 5
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