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4.6. Break transmission adjustment
- The handbrake is used only as a parking brake.
- Setting is carried out starting with the brakes moving to the brake control.
Important
After fitting the wheels on the axle, turn the wheels in the FORWARD direction (on all RA 2 type brakes, check that the adjustment
screw 8 reaches the "FORWARD" stop on the brake backing plate).
Adjust the brake setting using screw 8, with the cables not connected to the cross bar(s). The shoes should rub the drum slightly.
Connect the brake cables to the cross bars(s) and tighten the nuts and lock nuts, leaving the end of the threaded end protruding
by around 10 mm (Fig. 4.4).
IMPORTANT: Wherever possible, cables must cross over to achieve the highest possible gain curve (Fig. 4.5).
Check that the parking lever 1 is in the 'REST" position and that the compensating spring 4 is completely free on its rod (unscrew
the nuts 5 fully).
Check that the hook slide 2 is not compressed and the yoke 3 is in the pulled out position.
Fit the transmission and adjust the assembly using the tensioner 6 until a gap (J1) of 1 mm max is obtained between the linkage 9
and slide 2.
Adjust the compensating spring 4 at one end pressing it against the anchorage plate, and at the other end leaving a 2 mm gap (J2)
max between the spring and nuts 5.
Tighten all the lock nuts.
Checking the setting (trailer on axle stands):
Pull the parking lever 2 notches - the wheels cannot turn in a FORWARD direction.
The wheels can turn in REVERSE (adjustment screw 8 switches to the REAR position).
Pull the parking lever fully.
The wheels will not turn either in FORWARD or REVERSE and the cross bar(s) must remain parallel with the axle body.
Check the transmission setting after 180 miles (300 km) (running in period) and if necessary adjust the gap (J1) using the
tensioner.
Parking
The lever must be fully pulled up, so that the compensating spring is fully compressed.
Every 900 miles (1500 km), check the braking settings and distribution on all the wheels.
Important
The brake controls are designed to draw trailers behind flexible suspension touring vehicles. If used behind an HGV, be sure
to provide the fitted ball joint with a shock absorber to prevent premature wear.
During any manoeuvres with the trailer coupled, do not turn more than 90° or force reverse.
The specifications of our brake controls are indicated on a manufacturer's plate, and the items on this should be supplied to us
when requesting replacement parts, in particular for the shock absorber, of a special type, approved by the Service des Mines
to correspond to European standards (it is advisable to have a spare shock absorber to enable instant repairs).
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