I T L S E R V I C E M A N U A L
H-22
HYDRAULIC SYSTEM
Fix the lever to the shaft by tightening completely the clamp with the fastening screw "1".
This is an important measurement for the good functioning of the rockshaft.
Control by raising and lowering the lever "L" 3 or 4 times so that the arms always reach the same position at their
highest position.
After concluding the adjustment always verify that there exists a security distance (minimum 3°) between the
maximum raised position and the position of the mechanical backstop.
If the lifting arms reach the position of the mechanical backstop, the safety valve (relief valve 170 ±5 Kg/ cm2 )
intervenes with the danger of damaging the pump.
3. Assembly Measurement of Push Rod
If the rockshaft is adjusted and if the hydraulic group in the drawing is disassembled one must always restore the
measurement of 18mm.
This measure is obtained by keeping the push rod "A" fixed and screwing or unscrewing the self-locking nut "B" until
one reaches the specified measurement.
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