Ifor Williams Trailers HBX, Руководство пользователя, Страница: 37 / 42

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• Thoroughly examine all moving parts for
wear and correct functioning.
• Grease the drawtube bearings by means of
the grease nipples.
• Clean and grease bearing parts and pivot pins.
• Ensure correct functioning of all pivot pins
and levers and oil monthly.
9.3.3 DRAWTUBE
REACTION TEST
Fully apply the handbrake lever. Push the
coupling head as far back into the housing
as possible. (It will move slowly under steady
pressure.) On release, the coupling head
should slide gradually forward under the
pressure of the gas-filled shock absorber.
If it either fails to return to the forward
position or returns immediately, contact
your authorized distributor for advice.
9.3.4 CHECKING THE
COUPLING HEAD FOR
EXCESSIVE WEAR
With the coupling
disconnected from
the tow ball, observe
the position of
the wear indicator
lug relative to the
“MAX” line. Then,
with the coupling
attached to the tow
ball, re-check the position of the lug (see
diagram). The gap between the base of the
lug and the “MAX” line should be greater.
If it is unchanged, excessive wear has taken
place on the coupling head, the coupling ball,
or both.
If this is the case, make a further check using
a new 50mm ball.
If the gap is still unchanged the coupling
head is excessively worn and should be
replaced. However, if the gap is greater, your
original 50mm ball should be replaced.
NOTE: If you need to replace your coupling
head, carry out the check once more, as
your tow ball may also need to be replaced. It
is recommended that the coupling head and
ball are replaced at the same time, as this will
extend the service life of both components.
9.4 JOCKEY WHEEL
The jockey wheel should be checked monthly.
Any damaged or worn parts should be
replaced immediately. Lubricate the wheel
spindle and screw thread every 6 months.
9.5 PARABOLIC LEAF
SPRINGS
Check the tightness of the self-locking nuts
on the U bolts every 1000 miles or 2 months.
Or at every brake service check, whichever is
sooner. Tightening torque: 140 Nm.
WEAR
MAX