Maintenance and Troubleshooting
Pallet Trucks Stacker
Ergolift / Ergonomic 3000
Lift-Rite Pallet Truck
LUBRICATION
All pivot points are equipped with permanently lubricated bushings and bearings. To increase bearing life, it is recommended that a few drops of light
machine oil be applied at each pivot point every 6 months.
The main bearing in the thrust plate is equipped with a grease zerk. This should be greased every 6 months.
HYDRAULIC SYSTEM
Your hydraulic system is maintenance free. Do not add hydraulic oil unless there is, or has been a leak. Use Premium HVI oil or equal. Any other oils,
fluids or solvents can damage your hydraulic system. If additional oil is required, position forks in lowered position. Remove oil level plug (PL10267). Refill with hydraulic oil to plug hole
level. Replace oil level plug.
PUSH BAR LINKAGE ADJUSTMENT
If the forks do not raise evenly at the tips, or the roller levers begin to drag on the floor, the following adjustment is necessary:
-
Turn the Lift-Rite hand pallet truck over so that the under side of the forks are accessible.
-
Remove one split pin (PL10228) with 1/8" punch for LiftRite L50 Models or (PL10269) with 3/16" punch for LiftRite LR2055 Models.
-
Remove pin (PL10227) from bracket for Lift-RiteL50 Models or PL20227 for Lift-Rite LR2055 Models.
-
Adjust eye bolts (PL20226). Turn counter-clockwise to raise fork tips and clockwise to
lower fork tips.
-
Replace pin through eye bolt and replace split pin.
When adjusted properly the forks should be 3" lowered height for Lift-Rite L50 & Lift-Rite LR2055 Models, 2" lowered height for
Lift-Rite L50M & L50M-4 Way Models and 1-3/4"
lowered height for L50MU & L50MU-4Way Models, and 3 1/4" lowered height for Lift-Rite 8000# and 10000# models, from ground level in the lowered position.
TROUBLESHOOTING
Condition
|
Possible Cause
|
Action
|
| Pump does not lift. |
An airlock in the hydraulic system. |
Pull up on finger tip control and hold while pumping handle several times to bleed
air from system. |
| Lifting, neutral and lowering does not function properly. |
Chain anchor adjustment required. |
Turn nut (PL20271) on chain anchor clockwise until pumping action while in neutral
does not raise forks. |
| Forks raise and sink with pump action. |
Dirt or foreign particle caught in valve ball seat or cone valve seat. |
Pull up on finger tip control and hold while pumping handle several times. |
| Pump does not lift load to complete raised height. |
Pump is low on oil due to oil leak. |
Refer to procedure for adding hydraulic oil in maintenance section of manual. |
| Forks are not lowering all the way. |
Push bars need adjustment. |
Refer to push bar linkage adjustment in the maintenance section of manual. |
Lift-Rite Stacker Maintenance
BATTERY CHARGING
-
Park the Lift-Rite stacker with forks lowered and floor locks engaged, in a well-ventilated location.
-
Do not leave the Lift-Rite stacker in an area where it will obstruct emergency exits, aisles, etc.
-
Open battery compartment and leave battery compartment open during charging to allow proper airflow.
-
Plug charger cord into 110 volt AC/ 60 cycle outlet.
-
Do not operate lift mechanism while charger is operating.
-
The charging rate is controlled automatically to avoid battery from being overcharged.
-
Once the battery is fully charged, a “Charge Complete” LED on the charger will illuminate.
-
Unplug charger cord from outlet and store properly.
-
Close battery compartment.
MAINTENANCE INSTRUCTIONS
Battery
-
Always wear eye protection when inspecting battery.
-
Keep battery water level approximately ½” above plates at all times.
-
Use a hydrometer to check your battery acid. A fully charged battery should read 1265 to 1275 (specific gravity).
-
When adding water to battery, use distilled water only.
-
Keep outside of battery clean and dry to avoid corrosion of terminals and connectors.
-
Wet Cell Battery Dimensions: 12-3/4" long, 6-3/4" wide, 9-3/4" high (Including terminals) - Type - RV27
-
Gel Cell Battery Dimensions: 12-3/4" long, 6-5/8" wide, 9" high - Type - RV24
Hydraulic System
-
Do not add hydraulic oil unless there has been a leak.
-
Use only BP-SHF32 or equivalent hydraulic oil.
-
The oil level should be approximately ¾” below the top of the tank.
-
Check oil level only with fork (carriage) in lowered position.
Lubrication
-
Clean lifting chains and inside of channels periodically and lubricate lightly with light oil or multi-lube.
-
Do not lube tapered surface of channels in order to avoid rollers from sliding instead of rolling.
-
On Lift-Rite telescopic models, the guide rollers mounted on top and inside of the outer channels must be lubricated periodically.
-
Swivel casters are equipped with grease fittings for lubrication.
-
Straddle load rollers should be removed twice yearly and bearings cleaned and packed with grease.
TROUBLESHOOTING
If the motor is not running after the battery has been recharged, clean and check all electrical connections. If motor is still not running, have an
electrician or a qualified mechanic locate the problem. Do not attempt to use jumper cables as one small spark could blow up the battery and result in costly injuries.
If the motor is running but the forks are not raising, your valve spool could be seized or out of adjustment. This can be easily checked by taking a
screwdriver and depressing the valve spool while the motor is running. The clearance between the cam and adjusting screw should be .010 - .015. No clearance or not enough clearance will result
in your load lowering slowly by itself after the motor is shut off. Too much clearance will reduce your lowering speed. If the motor keeps on running after the control handle is released, your
solenoid is sticking and should be replaced.
Make sure your lifting chains are evenly adjusted to avoid binding of apron and overloading of chains.
When ordering parts, always state the Lift-Rite model number, serial number, capacity and load center of your stacker.
Lift-Rite Ergolift/Ergonomic3000
Lubrication
All pivot points in the LiftRite Ergo-Lift are equipped with permanently lubricated bushings and bearings. To increase bearing life, it is recommended that a
few drops of light machine oil be applied at each pivot point every 6 months. The main bearing in the thrust plate is equipped with a grease zerk. This should be greased every 6 months.
Hydraulic System
Your hydraulic system is maintenance free. Do not add hydraulic oil unless there is or has been a leak. Use Sunoco Sunvis 832 oil or equal. Any other
oils, fluids or solvents can damage your hydraulic system. With the Lift-RiteErgo-Lift in its lowered position fill the reservoir through the oil plug hole until the oil is even with the plug hole.
Battery (I2 Volt)
Keep the battery water level 1/2" above the plates at all times. If it becomes necessary to add water use only distilled water.
If you suspect that your battery is not charging fully, you can check your battery acid using a hydrometer. A fully charged battery should read between 1270 and 1275.
Gel Cell Battery dimension:
6-3/4" wide x 10-7/8" long x 9-7/8" high - Type - RV 24
Wet Cell Battery dimension:
6-3/4" wide x 12-3/4" long x 9-7/8" high - Type - RV 27
TROUBLESHOOTING MANUAL PUMP
Condition
|
Possible Cause
|
Action
|
| Lift-Rite Ergolift does not raise manually. |
An air lock in the hydraulic system. |
Pull control lever to lowering position. Pump handle several times (6-8 pumps
in most cases) to bleed air from pump.
Then pump normally to operate LiftRite Ergolift. |
| |
Foreign particle or dirt in valve body. |
Loosen the high pressure screw Part# PR8547 in parts breakdown. Operate pump manually several times then tighten the high pressure screw |
|
|
Neutral
position may be set too high. |
Turn
neutral valve Part#PR8548 in parts breakdown counter-clockwise until pump action raises Lift-Rite Ergolift. |
|
|
Bad or
worn seal(s) at top nut |
Check top
of cylinder housing for signs of oil leak. If leak is visible, replace Part# PR8529 in parts breakdown |
|
Lift-Rite
Ergolift raises without load (manually) but will not raise loaded. |
Relief
valve in manual pump is set too low. |
The relief
valve is factory set to protect the Lift-Rite Ergolift from overloading. In the event that the adjustment was altered, turn relief valve Part # PR8557 in parts breakdown clockwise until pump operates
satisfactory. The adjustment should be made with a load or no more than capacity which is indicated on the serial plate. Damage as a result of overloading voids the Lift-Rite Ergolift warranty. |
|
Lift-Rite
Ergolift does not lower manually. |
Release
lever linkage caught or broken (eg. damaged chain links or rivets.) |
Visually
inspect the release lever linkage. Replace any broken parts or clear any obstructions. |
|
|
Lock nut
on the release linkage is out of adjustment. |
Raise the
position of the lock nut Part # PR8520 in parts breakdown on the adjusting bolt. |
|
Handle will not lower without raising LiftRite Ergolift |
Neutral
position set too low. |
Turn
neutral valve Part # PR8548 in parts breakdown clockwise until handle lowers without raising the LiftRite Ergolift. |
TROUBLESHOOTING ELECTRIC PUMP
Condition
|
Possible Cause
|
Action
|
| Handle will not lower without raising Lift-Rite Ergolift. |
Neutral position set too low. |
Turn neutral valve Part # PR8548 in parts breakdown clockwise until handle lowers without raising the LiftRite Ergolift. |
|
Lift-Rite
Ergolift does not raise electrically (motor does not operate.) |
Battery
is not connected. |
Raise
the LiftRite Ergolift manually and connect wires Part # PR8501 and PR8509 to the negative battery terminal. |
|
|
Fully
discharged battery |
Connect
the charger as described under “Operations” in the LiftRite Ergolift manual |
|
|
Loose or
broken electrical connection. |
Inspect
and tighten all connections in the electrical system. Refer to the wiring diagram for proper connection. |
|
Lift-Rite
Ergolift does not raise electrically (motor operates). |
Damaged
pump shaft. |
Electrical power pack must be replaced. |
|
Lift-Rite
Ergolift does not raise electrically (motor operates). |
Spool in
solenoid valve for remote control is jammed. |
Replace
solenoid valve located on power pack. |
|
Electric power pack labors unusually while lifting or does not lift heavy loads. |
Sleeve
bearing in head assembly of the motor needs to be replaced. |
Have the
motor serviced by a qualified motor repair shop. |
|
|
Brush
set in the motor needs to be replaced |
Have the
motor serviced by a qualified motor repair shop. |
|
|
Excessive dirt or dust in the electric motor housing |
Have the
motor serviced by a qualified motor repair shop. |
|
Motor on power pack produces a growling sound. |
A worn
bearing on the motor shaft. |
Have the
motor serviced by a qualified motor repair shop. |
|
Lift-Rite
Ergolift fails to raise fully. |
Obstruction(s) restricting movement. |
Safely
clear or remove obstruction. |
|
|
Oil loss
in hydraulic system. |
The
LiftRite Ergolift must be in the lowered position to add hydraulic oil. Once the unit is lowered, remove filler screw on the outside of the cylinder housing to add hydraulic oil. |
| Lift-Rite Ergolift raises without load (electrically) but will not raise loaded. |
Relief valve at the power pack requires adjustment. |
Refer to the parts breakdown for the location of the power pack relief valve. |
|
|
Relief
valve on manual pump requires adjustment. |
The
relief valve is set at the factory to protect the LiftRite Ergolift from overloading. However, in the event that the adjustment was altered, place a load on the LiftRite Ergolift no greater than unit
capacity. Turn the outer nut 3/4 to 1 turn counter clockwise. Then with a 3/16” Allen key turn the screw clock-wise while engaging the electric pump to lift. Adjust the relief valve to
the point where the load will lift. Re-tighten the outer nut 3/4 to 1 turn clock-wise to lock the setting. A relief valve setting that exceeds the load capacity of the LiftRite Ergo-lift
will damage the unit and void all warranties. |
TROUBLESHOOTING BATTERY AND CHARGER
Condition
|
Possible Cause
|
Action
|
| Battery in the LiftRite Ergolift is not charging, |
No connection between the battery and charger. |
Lower the LiftRiteErgolift completely and connect the black housing connectors. One is located at the end of the yellow cord from the battery and charger. The other is fastened to the side of
the battery box. |
|
|
Battery
is not connected |
Raise
the LiftRite Ergolift manually. Connect wires Part # PR8501 and PR8509 to negative battery terminal |
|
|
Water
levels in the battery are low. |
Remove
battery box cover plate and inspect battery water levels. Add distilled water if battery levels are low. Units previous of SN E958-95 require battery removal for service |
|
|
Battery
has expired. |
Replace
the battery. |
|
|
Battery
charger has expired. |
Replace
the battery charger. |
TROUBLESHOOTING REMOTE CONTROL
Condition
|
Possible Cause
|
Action
|
| Battery charger indicator LED does not operate when connected to battery. |
Battery
terminals are not properly connected. |
Raise the
Lift-Rite Ergolift manually and connect wires Part # PR8501 and PR8509 to the negative battery terminal. |
| |
Battery charger has
expired. |
Replace the battery
charger. |
| Optional
remote control not lifting LiftRite Ergolift |
Remote control is not
connected. |
Plug the remote
control cord into the receptacle located on the top of the battery box. |
| |
Problem is not
related to remote control. |
Refer to Section
“Ergolift does not raise electrically”. |
| Optional
remote control not lowering LiftRite Ergolift |
Remote control is not
connected. |
Plug the remote
control cord into the receptacle located on the top of the battery box. |
| |
Battery voltage is
too low and the lowering solenoid will not shift. |
Lower unit manually.
Charge battery as described in owners manual. |
| |
Solenoid valve is
damaged. |
Replace solenoid
valve located on power pack. |
WIRING AND HYDRAULIC DIAGRAMS
|
|
|
WIRING DIAGRAM
CLICK TO SEE LARGER IMAGE
|
HYDRAULIC DIAGRAM
CLICK TO SEE LARGER IMAGE
|
| |
|
