Inspecting The Tension Of Engine Belt; Tension Of Engine Belt; Tightening The Cylinder Heads - Zetor 8621 Forterra turbo Operator's Manual

INSPECTING THE TENSION OF ENGI-
NE BELT
The correct tension of each belt is as-
sured when the belt is deflected 7,5 mm
after pushing on the belt by force 25 N.
Adjust the tension of belt to prescribed
value after loosening the fixing screws
(1, 2).
ADJUSTMENT
F 273

TENSION OF ENGINE BELT

At tractors Z 11641 the correct tension is
when the belt is deflected 25 mm after
pushing on the belt by force 50 N.
190
F 274

TIGHTENING THE CYLINDER HEADS

Cylinder heads are tightened at cold
engine in the prescribed sequence.
Tractor Type Z 8621 - Z 10641 - (A)
Torque
Valve
clearance 0,25" 0,05 mm
Tractor Type
Torque 1. first 19Nm
2. than 50 Nm
3. subsequently
tighten by 90„ " 5ř)
Valve
clearance 0,30" 0,05 mm
F 275
160 - 180 Nm
Z 11641 - (B)