After installing the new king
pin, apply Loctite 270 to the
bolts and tighten to the tighte-
ning torque listed in the table
above.
Loctite 270
8.8.3. King Pin Maintenance
Separate the Semi-Trailer from the truck
at short intervals, in any case, it should
be applied at most every 5,000 km.
Clean the 5th wheel plate and counter
plate of the semi-trailer. Lubricate the 5th
wheel pin, the counterplate, the closing
mechanism and the 5th wheel plate gen-
erously with high-pressure grease.
Especially in the first opera-
tion of the semi-trailer, abun-
dant lubrication of the 5th
wheel pin and 5th wheel is vi-
tal for long durability.
The 5th wheel pin is subject to natural
wear. When the wear measurement limit
is exceeded, the 5th wheel pin must be
replaced with an original spare part.
King Pin sizes
8.9. King Pin Steering Center Bearing
Control
Maximum allowable clearance on King
Pin steering center bearing:
• 2 mm in radial (horizontal) direction
• 3 mm in the axial (vertical) direction
If the vehicle is new, the maxi-
mum clearance in both direc-
tions is 1.5 mm.
When the gap exceeds the va-
lues shown, replace the
turntable.
Control of bearing
8.10. The Control of Steering Chock
Check the steering chock integrity, pin A,
weld and play condition of parts daily.
Excessive play will cause the vehicle to
not steer properly. We recommend re-
placing the rubber washers marked B
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