MOHAWK MODEL TP-20
11
TROUBLE SHOOTING CONTINUED
RAISING UNEVEN CONTINUED
POSSIBLE CAUSE
SOLUTION
POSTS OUT OF SQUARE
VERIFY LEVEL ASSEMBLY. MAKE ANY AND ALL NECESSARY ADJUSTMENTS.
SHOP FLOOR UNEVEN
VERIFY PROPER INSTALLATION OF MAIN SIDE POST. MAIN SIDE TO BE ON HIGH
SIDE.
ALSO SEE SPECIAL LIFTING PADS.
MAIN SIDE CYLINDER
PERFORM HYDRAULIC SAFETY CHECKS. CHECK FOR INTERNAL HYDRAULIC
LEAKS
SLOW DRIFT DOWN
SAFETIES NOT ENGAGED
RAISE UNIT TO RE-ENGAGE SAFETIES. THEN LOWER UNIT ONTO SAFETIES.
POWER UNIT LOWERING VALVE CONTAMINATION
BACK FLUSH POWER UNIT : PULL DOWN ON THE LOWERING HANDLE, THEN
ENGAGE THE UP BUTTON AT THE SAME TIME. RUN UNIT APPROX. 10 SEC.
EMERGENCY LOWERING VALVE OPEN
FULLY CLOSE THE VALVE. TIGHTEN SET SCREW.
POPPING NOISE WHEN RAISING
LOAD NOT CENTERED
VEHICLE IS TO FAR FORWARD OR TOO FAR BACK. POSITION THE VEHICLE SO
THAT THE TWO TOP CAM BEARINGS ( BEARINGS ON THE CARRIAGE WHICH
RIDE ON THE EDGE OF THE POST CHANNEL ) ARE FREE TO SPIN WHEN ALL
FOUR TIRES ARE OFF THE FLOOR.
EXTERNAL HYDRAULIC LEAKS
NOTE: TIGHTEN ALL FITTINGS PER SPECIFICATIONS.
MAIN SIDE CYLINDER
THOROUGHLY CLEAN THE CYLINDER. VERIFY LEAK ORIGIN. FITTINGS ARE TO
BE TIGHTENED PER SPECIFICATIONS
OFF SIDE CYLINDER
THOROUGHLY CLEAN THE CYLINDER. VERIFY LEAK ORIGIN. FITTINGS ARE TO
BE TIGHTENED PER SPECIFICATIONS.
BAD FLAIR OR FITTING
REMOVE THE HYDRAULIC LINE AND INSPECT FLAIR AND FITTING FOR
DEFORMATION. REPLACE IF NEEDED.
BAD O-RING ( O-RING TYPE FITTINGS )
CHANGE O-RING
LOOSE PIPE FITTING
REMOVE, RESEAL, AND RE-INSTALL FITTING.
SEAL ALL PIPE FITTING CONNECTIONS WITH THREAD SEALANT MOHAWK
PART # 601-610-002
NOTE: DO NOT USE TEFLON TAPE.
Summary of Contents for TP-20
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