Autoquip FREIGHTLIFT FLT - Manual (Page 60)

60
GENERAL MAINTENANCE
NOTES:
1. Industrial hydraulic oils formulated for high pressure uses and of the proper viscosity
contain anti-wear, anti-foaming, anti-rust additives making them acceptable.
However, it is best to contact Autoquip Customer Service for advance approval!
2. Use of improper oil will VOID the FREIGHTLIFT warranty!
3. The unit must be fully lowered to perform the filling operation.
FLUSHING THE HYDRAULIC SYSTEM
When the hydraulic system becomes contaminated or as a function of normal PMP (in
heavy use or particularly severe applications), it may be necessary to flush the entire
hydraulic system.
Parts Required:
• 5 – 10 gallons of proper oil (depends on tank size - see “Oil Recommendations”)
• 1 gallon of mild cleaning solvent
• Lint free rags
• A new pump
• A new suction filter
DANGER !
Turn off power and lock-out at the primary power disconnect switch before
service or maintenance. This procedure should only be done by qualified
service personnel and per OSHA Lock-Out, Tag-Out requirements.
1. Lower the carriage to the floor and lock-out and tag the electrical disconnect.
2. Remove the hydraulic hoses and the pump.
3. Drain the tank and then remove the suction filter.
4. Flush the hoses with solvent and wipe out the tank with solvent.
5. Install the new suction filter and pump and install the hoses.
6. Fill the tank with fresh oil and turn on the electrical power.
7. Bleed the system of air and check for leaks (see below).