Chassis
Checking and lubricating the steer-
ing chain
– Park the tow tractor safely
– Switch off the ignition and remove the key
– Press the emergency stop button
– Open the battery compartment door
– Disconnect the battery connector
– Jack the truck front and chock securely
– Check the chain tension. The chain deflec-
tion must be no more than 3–5 mm at the
midpoint
If the chain is too tight, steering will be heavy
and chain wear will increase. If the chain is not
tight enough, the steering wheel play will be
greater.
– To adjust the tension of the chain, remove
the rubber mat from the floorplate. Turn the
steering wheel until the adjustment nut (1)
is accessible through the left-hand cutout in
the floorplate
– Clean and lubricate the chain and ring
gears
– Check the ring gears and chain links for
wear
– Remove the chocks and the jack
– Reconnect the battery connector.
– Close the battery compartment door
– Restart the tow tractor
Maintenance
5
Chassis
142 1191 801 15 51 EN - 02/2021 - 10
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