
Perform the periodic inspections for safe operation.
1. Ensue that tha chain is not rusted, broken, cracked, or missing links (Monthly)
2. Ensure that battery terminal cover is without abnormality (Monthly)
3. Check the sliding portion of roller inside post, grease fitting of the chain
bracket portion, and grease up the chain. (Every 6 months)
4. Ensure that the density of each battery cell is 1,270 (at 20°) or greater
after charging. (Every 6 months)
5. Change the motor oil (Every 12 months)
■ Types of Hydraulic Oil ■ Replacing Battery
Viscosity classification ISO VG32 abrasion Battery used for this stacker is
resistant hydraulic fluid oil; JIS standard battery. Make sure to
Fluid volume : 1.6 liters replace with same standard spec.
Oil Brand Product Name Applicable Model No. JIS Spec.
Esso Nuto H32, HP32, Unipower SQ32 STL38E, ST38E GR-55B24R
Idemitsu Super Hydraulic Fluid 32 STL50E, ST50E, ST50EWN,
Showa Shell Terasu Oil 32, K32 ST30EWW, STL65E, ST65E, ST80E,
Mobile Mobile DTE24 ST80EWW, ST100E, ST100EWN,
Cosmo Cosmo Hydro AW32 STW38E
Kygnus Unit Oil WR32 STW50E, STW65E GX-130E41R
The below show how to deal with relatively minor malfunctions. For other further issues,
please contact your supplier of this stacker.
・Wiring defects
・Battery Socket is loose Fix the socket firmly
Check battery and charge
Readjust Relief Valve
・Power Unit(Pump) defects Replace Power Unit (Pump)
・Hydraulic Oil is not full Fill the oil
Replace Lowering Valve
・Piping defects Repair location of leak
・Piping defects
・Defective Lowering Valve Replace Lowering Valve
At Cylinder ・Defective Seals Replace Cylinder seales
At Pipe or Joint ・Improper fastening Check and Fasten
At Air Breather ・Excessive Oil Adjust fluid to appropriate level
When disposing of this stacker, dispose of the metal, non-metal, plastic, and hydraulic oil
components separately. There are regulations for disposing of the hydraulic oil, so make
sure to sourt and follow the local rules. If you have any questions regarding disposal,
please check with your supplier of the stacker.
- 6 -
Check through 【Actual Wiring
Schematic】
Do not lower
Oil Leak
・Defective seating of
Lowering Valve
Lowers natually
・Battery is not fully charged
Motor does not run
・Relief Valve is not
adjusted Properly
Motor is running
GR-95D31R
Symptoms of malfunction Possible Cause Action
Check through 【Actual Wiring
Schematic】
Does not
rise
・Make sure to remove the battery socket before work.
・Always be cautious of a short circuit.
・DO NOT mistake the (+) and (-) terminals.
・Make sure to cover the (+) terminal.
・Make sure to secure the battery with a battery clamp to prevent vibrating etc.