Brake System - Volvo A35E Operator's Manual

Service and maintenance
138

Brake system

Brake lining, min. thickness 5 mm (0.20 in)
Brake system
The brake system, apart from the parking brake, which is
controlled by compressed air, is all-hydraulic and has the oil tank
in common with the hydraulic system. Instructions for checking oil
level, changing oil and replacing filters can, therefore, be found in
the hydraulics section on page 149 (apart from replacing pressure-
oil filter, which can be found on the next page)
WARNING!
Even if the engine has been stopped, there is still an
accumulated pressure in the brake system. If the system is
opened without the pressure having been released, oil
under high pressure will jet out.
Parking brake, checking brake linings
Check the brake lining wear every 1000 hours.
The minimum measure for the parking brake linings is 5 mm
(0.20 in).
NOTE! If the linings are worn down below 5 mm (0.20 in), the
brake disc may be damaged.
Parking brake, adjusting
The parking brake is self adjusting. No after-adjustment is
required.
Brake system, pressure release
Before carrying out any work on the brake system of the machine
the pressure must be fully released. This is done according to the
instructions below.
1 Stop the engine.
2 Depress the brake pedal several times (approx. 30–40 times)
until the flow through the foot brake valve ceases (When the
hissing sound has stopped and the pedal feels "spongy").
NOTE! The system may still be pressurised even though a
pressure gauge shows 0, depending on where the gauge is
connected.
Checking accumulators
Contact a workshop authorised by Volvo CE.
.