Mohawk TP-20, Manual

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MOHAWK MODEL TP-20
10
TROUBLE SHOOTING
WARNING : NEVER ATTEMPT TO LOOSEN HYDRAULIC FITTINGS, OR OVERRIDE SAFETY DEVICES IN AN
ATTEMPT TO CORRECT A PROBLEM. ALL TEST ARE TO BE PERFORMED WITH NO VEHICLE.
NOTE:
•
THE HYDRAULIC SAFETY CHECK IS TO BE PERFORMED WITH NO VEHICLE ON THE UNIT.
•
CONTACT YOUR LOCAL MOHAWK DISTRIBUTOR OR THE MOHAWK FACTORY IF EITHER TEST FAIL.
HYDRAULIC SAFETY CHECK
MAIN SIDE SAFETY CHECK:
1.
RAISE THE UNIT APPROXIMATELY 3 FEET
2. DISENGAGE THE OFF SIDE MECHANICAL SAFETY
3. LOWER THE UNIT ONTO THE MAIN SIDE MECHANICAL
SAFETY
4. WHILE CONTINUING TO HOLD DOWN THE POWER UNIT
LOWERING HANDLE, OBSERVE THE OFF SIDE CARRIAGE
FOR MOVEMENT. THE UNIT HAS CHECKED OUT OK IF THEIR
IS NO MOVEMENT ( OFF SIDE CARRIAGE DOES NOT
CONTINUE TO LOWER )
OFF SIDE SAFETY CHECK:
1.
RAISE THE UNIT APPROXIMATELY 3 FEET
2. DISENGAGE THE MAIN SIDE MECHANICAL SAFETY
3. LOWER THE UNIT ONTO THE OFF SIDE MECHANICAL
SAFETY
4. WHILE CONTINUING TO HOLD DOWN THE POWER UNIT
LOWERING HANDLE, OBSERVE THE MAIN SIDE CARRIAGE
FOR MOVEMENT. THE UNIT HAS CHECKED OUT OK IF THEIR
IS NO MOVEMENT ( MAIN SIDE CARRIAGE DOES NOT
CONTINUE TO LOWER )
NOT RAISING LOAD
POSSIBLE CAUSE SOLUTION
LOW HYDRAULIC FLUID LEVEL LOWER UNIT. REMOVE RESERVOIR BREATHER CAP. FILL UNIT TO WITHIN 1/2
INCH BELOW PORT. USE DEXRON III TRANSMISSION / HYDRAULIC FLUID.
PRESSURE RELIEF ADJUSTMENT REFER TO POWER UNIT SPECIFICATIONS.
PRESSURE RELIEF CONTAMINATION REFER TO POWER UNIT SPECIFICATIONS. REMOVE AND CLEAN DEBRIS FROM
VALVE ASSEMBLY.
VOLTAGE TO POWER UNIT REFER TO POWER UNIT SPECIFICATIONS. CONSULT AN ELECTRICIAN
UNIT OVERLOADED VEHICLE TO HEAVY TO BE RAISED
NOT LOWERING
FLOW CONTROL VALVE CLOSE FLOW CONTROL VALVE. OPEN TWO TURNS. RAISE UNIT THEN LOWER.
MECHANICAL LOCKS ENGAGED RAISE UNIT. DISENGAGE MECHANICAL LOCKS.
UNIT UNEVEN ( SIDE TO SIDE ) RAISE UNIT TO FULL HEIGHT TO EQUALIZE. THEN LOWER
- OR -
USE DIVERTER VALVE TO EQUALIZE
POSTS OUT OF SQUARE VERIFY LEVEL ASSEMBLY. MAKE ANY AND ALL NECESSARY ADJUSTMENTS.
DEBRIS IN POSTS ( TOOLS ETC. ) CLEAN UNIT
OBSTRUCTION UNDER VEHICLE OR LIFT REMOVE OBSTRUCTION.
RAISING UNEVEN
RULE OF THUMB :
IF THE MAIN SIDE IS HIGH, RUN UNIT TO FULL HEIGHT. IF THE MAIN SIDE IS LOW, LOWER UNIT TO
FLOOR. ALLOW TIME FOR THE OFF SIDE TO EQUALIZE.
AIR IN SYSTEM BLEED UNIT. REFER TO BLEEDING PROCEDURES.
THE CARRIAGE BEARINGS ON THE MAIN AND OFF SIDE MUST NOT CONTACT
THE CARRIAGE STOPS. ( RESULT OF INCORRECT ROD ADJUSTMENT.)