22.5 After every 100 working hours or more frequently in
case of more intensive utilisation
WITH RACK
Periodically grease the points indicated on the crane (fig. 34) (and on the hydrau-
lic jib, when fitted, fig. 35) paying particular attention to the
points not easily detected. For the sliding sections of the
outrigger supports and of the extension booms guide shoes
made from a special material have been fitted: to ease their
movement it is recommended to smear a light film of grea-
se on them, taking care that the surfaces of the extension
booms are free from impurities such as sand etc. Top up
using hydraulic oil with the same characteristics as those
indicated in the table at paragraph 23.
WITH SLEW RING
Grease the slew gear to prevent friction during rotation and
to ensure that it is stable by preventing water (corrosion
protection) and contaminants from entering the bearings.
For a better internal distribution of the grease it is advisable
to rotate the crane and grease it
in such a way as to see grease
at the seals. Top up using
hydraulic oil with the same cha-
racteristics as those indicated in
the table at paragraph 23.
Grease the winch cable (if fit-
ted) after having first cleaned
the cable of any encrustation
(grease mixed with sand, dust,
dir t etc.) The lubricant used
must guarantee a good level of
penetration in order to lubricate
both the inside and the outside
of the cable. Top up using
hydraulic oil with the same cha-
racteristics as those indicated in
the table at paragraph 23.
22.6 After every 500 working hours or atfter every 6
working months
Check the tightening torque:
-
of the fixing rods of the crane; consult the following table in order to find it’s
value according to the bolt diameter:
Table of the tightening torques of the fixing rods of the crane on the vehicle
From “C0404 Kit for crane fixing”.
D. Fixing
Tightening
rods
torque = Nm
M22x1,5
300
M24x2,0
400
M27x2,0
600
M30x2,0
471
M33x2,0
1200
M39x3,0
1800
22.5
MAINTENANCE
INSTRUCTIONS
GRU FASSI
fig. 35
fig. 34
fig. 35a
fig. 34a
WITH RACK
WITH SLEW RING
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