Platform will lift rated loads, but drifts down.  
                
                
                    
| Possible Cause #1 | 
Air in hydraulic lines. | 
| Action - | 
           
 Fill reservoir to within 1/2'             of full with platform on ground with factory recommended Pennzoil             Arctic hydraulic fluid, Dextron II if not available. (Power             down models fill to 1/2' of full with platform raised). 
           
(Diagnosis time -10 minutes / Repair time - 10 minutes). 
            | 
| Part Numbers - | 
N/A | 
| Possible Cause #2 | 
Lowering valve stuck partially or fully open. | 
| Action - | 
           
 With platform on ground, remove lowering valve and inspect. Clean if dirty. Replace if plunger not freely moveable. 
           
  
           
(Diagnosis time - 1/2 hr. / Repair time - 15 minutes). 
            | 
| Part Numbers - | 
           
 ATU-121 (Monarch Lowering Valve) 
           
ATU-479 (Fenner Lowering Valve) 
            | 
| Possible Cause #3 | 
Cylinder piston seal blown allowing fluid to leak past piston when trying to raise platform. | 
| Action - | 
           
 Remove breather hose from end of cylinder. Activate power unit to raise position, if hydraulic fluid pumps out o f breather port, repack or replace cylinder. (If under warranty, replace cylinder - DO NOT repack or dismantle. 
           
  
           
(Diagnosis             time - 10 minutes / Repair time - 1/2 hr.). 
            | 
| Part Numbers - | 
           
 ATU-25100 (AST-1500, AST-2000, ASTL-1800, ATU-1800) 
           
ATU-50100 (ASTL-2500, AST-2500, ATU-2500 Cylinder) 
           
ATU-75100 (AST-3000, ATU-300, ATU-3500 Cylinder) 
           
ATU-25113-WR (ATU-25100 Seal kit) 
           
ATU-50123-WR (ATU-50100 Seal kit) 
           
ATU-75112 (ATU-75100 Seal kit) 
            | 
| Warranty Information: | 
| Base Warranty: | 
           
 3 Years on mechanical structure. 
           
2 Years on hydraulic & electrical components. 
            | 
|            
 Warranties are void if genuine Anthony parts are not used. 
           
  
           
FOR ANTHONY LIFTGATES ASSISTANCE CALL (800) 482-0003
            |