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3.1 Connect the hydraulic ram, hose and

   pump unit together, ensure that you

   have securely fastened the couplers

   before pumping.

 

Warning: inspect before each use. Do

   not use if bent, broken, leaking,

 

damaged components or any suspect

   parts are noted and /or it has been

   subjected to a shock load.
3.2 Firmly close the release valve (P29)

   by turning it clockwise.
3.3 Adjust the ram slowly to make the

   load coaxial with the ram.

4.1 When not in use, store the equipment

 

in a dry location with the pump piston

  

(P20) and the ram fully retracted.

4.2 Periodically check the ram and pump

  

piston for signs of rust or corrosion.

  

Clean exposed areas with a clean

  

oiled cloth.

 

Warning; Never use sandpaper or

  

abrasive material on these surfaces!

4.3 A coating of light lubricating oil to

  

pivot points, axles and hinges will

  

help to prevent rust and assure that

  

pump assemblies move freely.

 

Periodically lubricate the pivot points,

  

axles and hinges with a light

 

lubricating oil as needed.

3. OPERATING INSTRUCTIONS

 

NOTE: The pump can be used in

   any position from horizontal to

 

vertical. Always keep the hose end of

   the pump downward when it is not 

 horizontal.
3.5 Pump the handle (p37) up and down

   to supply pressure.
3.6 When work is done, SLOWLY and

   CAREFULLY turn the release valve

   counterclockwise (never more than

   one turn) to release the pressure until

   ram retracts to desired position.

4. MAINTENANCE

4.4 With ram fully lowed, set pump unit in

  

its normal, level position. Remove

  

the plug (p07) to check the hydraulic

  

oil level. If it is not adequate, add high

  

quality hydraulic jack oil as necessary.

 

Warning: DO NOT use brake fluid or

  

any other improper fluid and avoid

  

mixing different types of oil when

  

adding hydraulic oil.

4.5 To ensure best performance and

  

longer equipment life, replace the

  

complete hydraulic oil at least once a

  

year. With ram fully lowered, remove

  

the plug (P07).

4.6 Note: Dispose of hydraulic oil in

 

accordance with local regulations. 

4.7 It is recommended that an annual

 

inspection be done by qualified

 technicians.

Poor

performance

Ram will not

lift load

SYMPTOM

POSSIBLE  CAUSES

CORRECTIVE  ACTION

Release valve not tightly closed
Overload condition

Firmly closed release valve

remedy

Firmly close release valve
Replace ram and/or pump

Drain oil to proper level
Clean and lubricate

moving parts

Add hydraulic oil

Add hydraulic oil

Release valve not tightly closed
Hydraulic unit malfunction

Reservoir overfilled
Linkages binding

Oil level low

Oil level low

Ram will not

maintain load

Ram will not lower 

after unloading

Ram will not extend 

to full stroke

5. TROUBLESHOOTING

Содержание KN 7402-10PA

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Страница 2: ...xtend so far as to exceed the maximum ram stroke 1 11 When coupler valves are disconnected always use dust cap to keep the hydraulic system clean 1 12 DO NOT drop any heavy objects onto the hose and D...

Страница 3: ...ure 3 6 When work is done SLOWLY and CAREFULLY turn the release valve counterclockwise never more than one turn to release the pressure until ram retracts to desired position 4 MAINTENANCE 4 4 With ra...

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