MAINTENANCE
213
possible the two lock nuts, forward of the
spring cylinder, are incorrectly adjusted.
Loosen the nuts and adjust brake rod as
above (Figs. 10 & 12).
13. Adjust the two locking nuts, forward of the
spring cylinder (Fig. 10), (on some chassis
a single Nyloc nut is used) to give 1 mm
of clearance on the spring cylinder. This
cylinder (the energy store for the hand-
brake operation) must be able to rotate
ONLY, not slide on the brake rod. (Fig. 12).
(If the overrun assembly is fitted with
a gas strut handbrake then no spring
cylinder is fitted - therefore ignore this
paragraph).
14. CORRECT ADJUSTMENT of the linkage is
checked by operating the handbrake lever
so that when the second or third tooth is
engaged, a slight braking force is felt on
the road wheels.
15. OVER ADJUSTMENT of either the wheel
brakes or linkages, will result in difficult
reversing causing the wheels to “lock-up”.
16. When parking, the handbrake lever MUST
ALWAYS be engaged into the fully upright
position (90°). This is to compress the
spring within the spring cylinder and
thereby create an energy store which will
automatically engage the brakes further
should the caravan move. If difficulty is
experienced in this operation, try easing
the caravan backwards with one hand
while engaging the handbrake fully with
the other. This manoeuvre should not be
attempted on a rearwards facing slope. In
this case wheel chocks should be used
combined with the handbrake. See page
210 for all handbrake operations.
17. Finally, if the road wheels have been
removed, re-tighten using a calibrated
Torque Wrench (see Changing a wheel).
Remember to over-tighten is just as
dangerous as to under-tighten, as this can
distort the wheel rims. Avoid the use of
power wrenches.
! WARNING: The torque settings should
be rechecked regularly. Wheel bolts should
NEVER be lubricated.
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