Mohawk RJ-50-AH Series, Installation, Operation, Maintenance, Parts

MOHAWK MODEL RJ-50-AH-SERIES 

7

PRE - OPERATION CHECK LIST 

TRAINED OPERATOR 



THE OPERATOR MUST BE FULLY TRAINED AND QUALIFIED 
TO SAFELY AND EFFECTIVELY OPERATE THIS EQUIPMENT 
OF THIS SPECIFIC MAKE AND MODEL. 

ABSENCE OF OBSTRUCTIONS 



THE TOTAL WORK AREA MUST BE FREE OF ANY AND ALL 
OBSTRUCTIONS AND BE GENERALLY CLEAN. (FREE OF OIL 
AND DEBRIS) 

VISUAL INSPECTION 

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THOROUGHLY INSPECT THE UNIT WITH A TRAINED EYE, 
NOTING ANY PROBLEM AREAS. INSPECT THE FLOOR AND 
THE ANCHORING FASTENERS AS WELL. REPORT ANY 
QUESTIONABLE ITEMS. 

 
 
 
 
 
NO LOAD PERFORMANCE CHECK 

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NO EXTERNAL FLUID LEAKS. 

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NO BLEED DOWN. 

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EFFORTLESS AND SIMULTANEOUS MOVEMENT. 

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 LEVEL 

LIFTING 

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CONTROLS FUNCTION PROPERLY. 

PREVIOUS DAY' S OPERATION REPORT 



  VERIFY WITH SUPERVISOR THAT THERE WAS NO 

PROBLEMS EXPERIENCED THE PREVIOUS DAY. IF THERE 
WERE ANY PROBLEMS, VERIFY THAT ALL NECESSARY

REPAIRS HAVE BEEN COMPLETED.  

LIFTING PROCEDURES 

LIFT PREPARATION AND VEHICLE POSITIONING 



PERFORM PRE-OPERATION CHECK LIST ITEM BY ITEM. 

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POSITION THE VEHICLE ONTO THE LIFT SO THAT ALL TIRES 
ARE SECURELY ON THE TRACKS. 

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POSITION THE VEHICLE CENTERED ON THE TRACKS, SO 
THAT THE WEIGHT IS DISTRIBUTED EVENLY, FORE AND 
AFT. 

NOTE: 

ALIGN THE VEHICLE’S CENTER OF GRAVITY WITH THE 
CENTERLINE OF THE TRACKS. 



PLACE THE WHEEL CHOCKS IN A POSITION SO THAT THE 
VEHICLE WILL BE SECURE ON THE LIFT. PLACE CHOCKS 
OPPOSING EACH OTHER, PREFERABLY ON THE END OF THE 
VEHICLE THAT IS NOT GOING TO BE RAISED BY THE 
JACKING BEAM. 



PLACE THE JACKING BEAM INTO POSITION, ENABLING 
LIFTING FROM EITHER FRONT OR REAR AXLE. 

TO RAISE 



DEPRESS THE RIGHT SIDE LEVER OF THE POWER UNIT TO 
RAISE. 



ENSURE PROPER PAD ENGAGEMENT WITH FRAME OR 
AXLE.       



PLACE THE LIFTING PADS PER MFG’S RECOMMENDED LIFT 
POINTS FOR THE VEHICLE. REFER TO ALI/LP-GUIDE, 
ALI/SM01-2 “LIFTING IT RIGHT” GUIDE, AND REFER TO THE 
RECOMMENDED LOCATION AND FORMAT OF THE VEHICLE 
LIFT POINT LABEL PER ANSI/SAE J2184-OCT92. 

CAUTION: 

IF PROPER AND SAFE LIFTING POINTS ON THE FRAME OF 
THE VEHICLE CAN NOT BE REACHED BY THE LIFTING PADS, 
DO NOT RAISE THIS VEHICLE! 

ADAPTER USAGE AND LIMITATIONS: 

 
THE USE OF HEIGHT ADAPTERS IS COMMON FOR MOST 
LIFTING SITUATIONS TO ACCOMMODATE HIGH FRAMES 
AND LOW OVERHANGING BODIES OF VEHICLES.  
 
THESE JACKS ARE ONLY ALLOWED TO USE 2 ADAPTERS 
WHEN STACKED: ONE (1) 7 1/2” AND ONE (1) 10” ADAPTER, 
RESULTING IN 17 1/2” MAXIMUM STACKING HEIGHT. 
LONGER CUSTOM SINGLE PIECE ADAPTERS ARE 
AVAILABLE UPON REQUEST. 



RAISE VEHICLE AXLE TO DESIRED HEIGHT. 

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LOWER ONTO MECHANICAL LOCK. 

TO LOWER 



  INSPECT THE LIFTING AREA TO INSURE THAT ALL 

PERSONNEL AND DEBRIS HAVE BEEN CLEARED FROM THE 
LIFTING AREA. 



RAISE BEAM ABOUT ½ INCH UNTIL LOCK RELEASE LEVER 
RELEASES LOCKS. 



WHILE HOLDING LOCK RELEASE LEVER DOWN, DEPRESS 
THE LEFT SIDE LEVER OF THE POWER UNIT TO LOWER. 



BEFORE REMOVING VEHICLE FROM THE LIFT AREA, 
ENSURE THAT BOTH RJ HYDRAULIC CYLINDERS HAVE 
BEEN COMPLETELY RETRACTED, AND THAT THE LIFTING 
PADS AND HEIGHT ADAPTERS HAVE BEEN PLACED IN 
THEIR PROPER PLACE. PRIOR TO LOWERERING LIFT, 
LOCATE BEAM TO PIT END OF TRACK IF NECESSARY (FOR 
FLUSH MOUNTED LIFTS) 



REMOVE WHEEL CHOCKS BEFORE REMOVING VEHICLE 
FROM LIFT.