Blocking And Unblocking The Front Axle Knees (Extensions) - Zetor 8621 Forterra turbo Operator's Manual

CHANGE OF WHEEL TREAD ' SPRUNG AXLE KNEES (EXTENSIONS)

BLOCKING AND UNBLOCKING THE FRONT AXLE KNEES (EXTENSIONS)

Blocking:
- Unscrew the plug (1). Safe it for assembling at later unblocking.
- Screw down the stop tube (3) with lock washer (4) into the thread hole of spring
bushing (2) instead of plug.
Insert the screw M 10x1,25 (5) into the stop tube and screw it down into the nut (6).
This nut is inside of rubber spring (7). The spring (8) is out of function by this way
and the knee is blocked. Unblocking the front axle knee is done by the opposite way.
After blocking and unblocking the front axle knees check the front wheel toe-in.
F 263
146
Block and unblock the sprung
axle knee in loaded status only
(by the own weight of tractor).
Kingpin of wheel is shot up by
the force of spring after un-
blocking the unloaded axle knee.
Disassemble the bushing
spring only if the sprung knee
needs to be completely disas-
sembled. Because the special
tool must be used for disas-
sembling let to do this job in a
specialized workshop.
F 264
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