Maintenance; Lubrication; Wear Limits - Holland GES20 Bedienung-Wartung

3 Maintenance

3.1 Lubrication

The plate surface and locking mechanism (coupler
jaw and wear ring) must be sufficiently lubricated
before the first coupling and then regularly every
5000 km with high-pressure long-lasting grease*.
The old grease on the surface must be removed with
a spatula before each new greasing. The lubrication
intervals must be adapted to the relevant operating
conditions, with the result that shorter or longer in-
tervals are possible.
central lubrication systems), Renolit FG 150.
The lubrication intervals must be adapted accordingly when
using other lubricants. Observe the manufacturer's informa-
tion when using central lubrication systems.
brication (see also Section 3.2, «Wear limits»)
• Worn or damaged parts must be replaced with
SAF-HOLLAND original replacement parts
• The fifth wheel must be checked for proper func-
tioning no later than 50 000 km, corresponding to
the mileage and load stress. We recommend a visu-
al inspection every 25 000 km
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* A long-lasting high-pressure grease is recom-
mended (NLGI class 2) with MoS2 or graphite
additives, e.g. MOTOREX MOLY 218, SHELL
RETINAX HDX2, Renolit LZR 2 H (suitable for
• We recommend checking the base ar-
eas of the fifth wheel and semitrailer
plates for signs of damage and rectify-
ing these if necessary during each lu-

3.2 Wear limits

The wear to the fifth wheel plate can be checked at
the visible wear limits without tools or resources. The
reference gauge (SAF-HOLLAND order number
659 920 032) is recommended for the
wear inspection on the fifth wheel locking mechanism
and on the fifth wheel kingpins.
Coupling plate: Visual inspection
The fifth wheel plate must be removed if it is worn as
far as the lubricating groove. Check the semitrailer
plate and, if necessary, replace.
Uneven, cambered semitrailer plates lead
to uneven, increased wear to the coupling
plate.
Coupling lock
The wear to the locking mechanism must be checked
using the reference gauge. The coupling must be re-
adjusted if the reference gauge positioned from abo-
ve slides into the locking mechanism. (see Section 3.3
«Adjusting play»)
If there are no further readjustment options, the wear
ring and the coupler jaw must be replaced by an au-
thorized specialist.
In all cases, the locking mechanism must be comple-
tely replaced after 30 000 coupling cycles.
Fifth wheel kingpin
Measure both diameters with the reference gauge in
a longitudinal and transverse direction. If measure
71 or 49 is reached, it is essential to replace the fifth
wheel kingpin.
Reference gauge
Correct Incorrect
min. 49 min. 71
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