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Cleaning, maintenance and repairs
12.4.1
Inspection instructions for the dual-circuit service brake system
1.
Leak tightness check
1. Check all connections, pipe lines, hose lines and bolts for tight-
ness.
2. Repair any leaks.
3. Repair all areas where rubbing on pipes and/or hoses occurs.
4. Replace all porous and defective hoses.
5. The dual-circuit service brake system may be considered
leakproof if the drop in pressure is no more than 2.18 psi [
0.15
bar] after
10
minutes.
6. Seal any leaking areas and replace leaking valves.
2.
Check pressure in the air reservoir
1. Connect a pressure gauge to the test connection on the air res-
ervoir.
Set value
[6.0 to 8.1
+ 0.2
bar]
3.
Check brake cylinder pressure
1. Connect a pressure gauge to the test connection on the brake
cylinder.
Set value: brake not applied
0 psi [0.0 bar]
4.
Visual inspection of brake cylinder
1. Check the dust collars or bellows for damage.
2. Replace damaged parts.
5.
Joints on brake valves, brake cylinders and brake linkages
Joints on brake valves, brake cylinders and brake linkages must move
freely. Grease or lightly oil, if necessary.
98
Catros BAG0110.10 10.19