HyHydrdrauaulliic sc sysystetem / m / RReepapaiir r ininststruructctiioonns / s / CCoonntrtrool vl valalveve 88.2.299
If the correct If the correct lowering speed has not been obtained (seelowering speed has not been obtained (see "Checking the lowering speed""Checking the lowering speed"
on page 8.28on page 8.28) adjust the lowering ) adjust the lowering speed valve mounted on the hydraulic valve, see pos.speed valve mounted on the hydraulic valve, see pos.
1 figure1 figure 8.128.12, until the correct lowering speed is obtained., until the correct lowering speed is obtained.
Adjusting the working pressureAdjusting the working pressure
1.1. Place Place the mthe max tax truck ruck load load on ton the forhe forks (sks (specifpecified on ied on the trthe truck uck machmachine pine plate).late).
2.2. UnsUnscrecrew thw the ade adjustjustining scg screwrew, po, pos. 2 s. 2 see see figufigurere8.128.12, two turns to the left., two turns to the left.
3.3. At the At the same tsame time aime as the lis the lift funcft function fotion for the for the fork cark carriagrriage is ae is actuactuated, ted, screw screw in thein the
adjusting screw until the fork carriage begins to lift fradjusting screw until the fork carriage begins to lift from the floor, and then screwom the floor, and then screw
in an additional ¼ of a turn and lock.in an additional ¼ of a turn and lock.
4.4. FinallFinallyy, perf, perform reorm repeatpeated lifted lifting opeing operatiorations to ens to ensunsure that re that the lifthe lifting cating capacpacity isity is
sufficient.sufficient.
55.. SSeeaall!!
Emergency lowering valveEmergency lowering valve
The emergency lowering valve is used to lower the forks during power failure.The emergency lowering valve is used to lower the forks during power failure.
Warning!Warning!
Make sure the forks can be lowered sMake sure the forks can be lowered safely before the emergency lowering valve isafely before the emergency lowering valve is
opened.opened.
1.1. Open Open the the emergemergency ency lowerilowering vang valve lve (3) u(3) using sing a 2.a 2.5 mm 5 mm hexahexagon gon wrencwrench.h.
2.2. TigTighten hten the the emergemergencency lowy lowering ering valvvalve (3e (3) whe) when thn the fore forks ks are loare loweredwered..
Figure 8.12Figure 8.12 Electrically operated proportional valveElectrically operated proportional valve
ElElPropVentPropVent..epseps
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22
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