Zetor 8621 Forterra turbo Operator's Manual page 17

FLUID SERVICE BRAKES
Inspect the brake and clutch circuit for
leaks and check the brake fluid level in
the brake fluid expansion reservoir.
PREVENTIVE DAILY SERVICE
F 11
AIR TRAILER BRAKES
Inspect the air brake system leak and
tractor break efficiency with trailer (see
„inspection of air brake leak ").
17
F 12
HYDRAULIC TRAILER BRAKES
Inspect the hydraulic brake system leak.
F 13