Measuring Hydraulic Drift Of Lift Cylinder, Tilt Cylinder - Komatsu FD100-7 Shop Manual

MEASURING HYDRAULIC DRIFT OF LIFT CYLINDER, TILT CYLINDER

MEASURING HYDRAULIC DRIFT OF LIFT CYLINDER, TILT CYLINDER
PRECAUTIONS WHEN MEASURING
1. When measuring, never let anyone go under the load.
2. Do not put your feet on the mast stays or dashboard and climb up when measuring the hydraulic drift of the lift cylin-
der. If you measure the hydraulic drift when doing this, there is danger that you may get your hands or feet caught in
the mast.
Always use a strong, stable stand when measuring.
3. Before measuring, check that the hydraulic oil level is correct and that hydraulic oil is not dirty or mixed with any other
brand of oil.
4. Always carry out the measurement on flat horizontal ground in front of a strong platform which will support the truck if
it should tip over to the front.
METHOD OF MEASURING
1. Stop the lift truck 500 mm in front of the platform.
2. Operate the lift and tilt repeatedly to set the hydraulic
oil temperature to 50° (122 ).
3. Set the rated load on the forks and secure it to the
fork carriage with wire.
4. Raise the load approx. 1500 mm (59 in) and set the
mast perpendicular.
[Hydraulic drift of lift cylinder]
5. Wait for 3 minutes, then place a ruler against the lift
cylinder piston rod and make a mark.
6. Measure the hydraulic drift over the next 15 minutes.
[Hydraulic drift of tilt cylinder]
5. Wait for 3 minutes, then place a ruler against the tilt
cylinder piston rod and make a mark.
6. Measure the hydraulic drift over the next 15 minutes.
20-18
TESTING AND ADJUSTING
Set must
perpendicular
Approx
1500 mm
EX20 Series