Brakes and calipers on the AP-7 at Figueres

Brakes and calipers

A seized trailer caliper is the single most common fault that strands a truck in a service area. We free the caliper, replace discs and pads, repair air lines and fittings and change Knorr-Bremse and Wabco relay and modulator valves. Before we release you we check pressures on both circuits.

A truck brake system is pneumatic: a compressor feeds the tanks and every pedal press is really a pressure command. So roadside failures are usually about air — leaks, saturated dryers, sooty valves — rather than friction material, which is why a good diagnosis starts by listening to the circuits with the engine off.

On the move the golden rule is don't push it: long pedal travel, grabbing or a dropping pressure gauge mean stop somewhere safe and call. An axle dragging on a seized brake chamber destroys drum, linings and tyre within a few kilometres.

What never to do

Do not force it along with a wheel locked
Do not cool a red-hot disc with water
Do not fiddle with trailer valves you do not know

Pressure dropping at rest. Parked with the engine off, the needle sinks: there is an active leak.

How it works

Tank fill and pressure-drop are checked section by section against the manufacturer's figures. Once the guilty branch is isolated (chamber, valve or line), the part is replaced with quality spares, then we prove tightness again and finish with a controlled road test confirming the brakes release fully.

1
Tightness test
Section-by-section pressure drop against factory specifications.
2
Part replacement
Chamber, valve or line fitted with approved components.
3
Adjust & grease
Pushrod stroke and slack adjuster lubrication per service schedule.
4
Test run
Verification of full release and per-wheel temperatures.

Job

Brake chamber. Part plus fitting; far less than new drum, linings and tyre.

Drain the tanks of water weekly in winter, fortnightly in summer: water in the circuit is the silent cause behind seized valves and choked dryers.

AP-7 · Figueres

Half-way along the corridor, this stretch merges the flows coming off the border with those climbing from Barcelona: braking, overtaking and lane changes without pause.

Figueres entry, industrial zone and N-II access. Mandatory passage toward Roses/Costa Brava.

AP-7

5 – 6

Figueres

Cataluña

24/7

24 hours · 365 days

La JonqueraAP-7 · 2 – 4 · 0 km GironaAP-7 · 7 – 9 · 45 km GranollersAP-7 · 13 – 14 · 85 km BarcelonaAP-7 · 15 – 21 · 145 km

Questions about this stretch

Where do you usually meet the truck on this stretch?

Most often it's the hard shoulder between exits 5 and 6, the N-II junction or inside the estate itself. If you can roll to a safe lay-by, say so on the call: that always beats the shoulder.

Do you also attend the C-260 towards Roses if that's where I stop?

Yes, Figueres coverage includes the start of that road. Send us the location and on the call we confirm whether we take it or coordinate closer assistance.

Is anything known to fail at this point?

On short climbs and stop-start queues we regularly see overheating and brake wear from constant use. We check the whole circuit on site before you continue.

Other services at Figueres

Mobile tyre service AP-7 · Figueres Roadside mechanical breakdown AP-7 · Figueres Air suspension repair AP-7 · Figueres Reefer and cooling units AP-7 · Figueres Diagnostics and electrics AP-7 · Figueres

Brakes and calipers on the AP-7, Figueres