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CWL-20   

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Maintenance and Inspection 

8.

 

Maintenance and Inspection 

 

WARNING

  - 

The  owner  must  inspect,  or  appoint  a 

knowledgeable person to inspect the jack for signs of 
corrosion  and  /  or  excessive  wear.  Visual  inspection 
should be made before each use of jack, checking for 
abnormal  conditions.  Regular  inspections  should  be 
made weekly for daily use and monthly for intermittent 
use.  Each  jack  must  be  inspected  immediately  if 
subjected  to  an  abnormal  load  or  shock.  Any  jack 
which appears to be damaged in any way, is found to 
be  badly  worn,  or  operates  abnormally  shall  be 
removed  from  service  until  necessary  repairs  are 
made.  Contact  the  manufacturer  using  the  contact 
information printed on the back cover of this manual. 

8.1

 

Structural inspection 

The  jack  must  be  removed  from  service  and  inspected 
for  damage  immediately  if  the  jack  is  subjected  to  an 
abnormal shock or load. Never return the Lift system to 
service  until  all  damaged  components  have  been 
properly  repaired  or  replaced.  Always  test  the  lift  and 
verify  proper  operation  before  returning  the  Lift  system 
to  service.  Failure  to  heed  this  warning  may  result  in 
personal and / or property damage. 

 

To prevent serious injury or death from a falling vehicle, 
all  inspection  and  maintenance  procedures  must  be 
performed 

after

  the  jack  has  been  removed  from 

service. Position the lifts so you have clear access to all 
sides of the lift for inspection and service. 

 

Inspect  the  lifts  for  any  cracks,  chips,  or  signs  of 
excessive wear. Visually inspect the welds. 

 

Inspect  the  load  retention  pins  for  deformities  or 
excessive wear — if the deformities or wearing away 
of  material  are  easily  noticeable  without  close 
inspection,  it  is  excessive.  Test  the  load  retention 
pins  by  inserting  them  through  the  lift  stop  bar  and 
into  each  downstop  lug.  If  the  load  retention  pin 
cannot be inserted fully through the lift stop bar and 
into  each  of  the  holes  in  the  downstop  lugs  in  all 
positions,  it  is  excessively  damaged  and  must  be 
replaced before the lift can be used again. 

 

Inspect  the  holes  for  the  load  retention  pins  in  the 
base post. If these holes show excessive elongation 
or wear on the top or bottom surfaces, they must be 
repaired  before  the  lift  can  be  placed  back  into 
service.  Contact  the  manufacturer  using  the  contact 
information  on  the  back  cover  of  this  manual  for 
repair recommendations. 

 

If any irregularities or problems are detected during an 
inspection,  the  stand  must  be  removed  from  service 
immediately  and  repaired.  Contact  the  manufacturer 
using  the  contact  information  on  the  back  cover  of 
this manual. 

8.2

 

Air hose inspection 

To prevent serious injury or death from a falling vehicle, 
or  possible  serious  injury  due  to  bursting  air  hoses, 
replace  air  hoses  only  with  single-wire  reinforced  air 
hoses  from  manufacturer,  part  number  1-271-02002. 
The use of any other air hose increases the risk that the 
air  hose  may  become  pinched  or  damaged,  resulting  in 
failure  of  the  air  hose  or  of  the  lift  during  operation. 
Contact the manufacturer. 

 

Inspect  the  air  hoses  daily  for  any  signs  of  cuts, 
abrasions, or excessive wear. If any air hose appears 
to  be  damaged,  replace  it  immediately  with 
manufacturer  authorized  reinforced  steel  air  hose, 
part number 1-271-02002. 

 

Inspect  the  air  fittings  daily  for  cracks  and/or 
damaged  parts.  If  any  show  damage,  replace  them 
before putting the Lift system back into service. 

8.3

 

Maintenance instructions 

 

WARNING

  -  All  inspection  and  maintenance  procedures 

must be performed after the jack has been removed from 
service.  Failure  to  do  this  may  result  in  personal  injury 
and/or property damage. 

 

All  warning  and  capacity  labels  should  be  readable 
and complete. Wash external surfaces of jack, labels, 
and decals with a mild soap solution. 

 

Lubricate  all  rotating  and  sliding  portions  of  the  jack 
monthly (Fig. 11). 

 

Fig. 11: Lubrication points 

 

 

Oil downstop
pivot shaft
and release
springs
monthly

Grease swivel
casters monthly

Grease roller wheel monthly.

Grease base post monthly with EP-1 yellow grease.

Oil front wheels
monthly.

Содержание CWL-20

Страница 1: ...MAHLE CWL 20 EN Operation Manual Wheel lift system U S Patent No D357 106 5 484 134 ...

Страница 2: ...RY PERSON WHO OPERATES THIS EQUIPMENT NEEDS TO KNOW AND UNDERSTAND ALL OF THE INFORMATION IN THIS MANUAL FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY OR DEATH READ THIS MANUAL CAREFULLY AND RETAIN FOR YOUR RECORDS ...

Страница 3: ...he lifts and vehicle 8 7 2 Raising a vehicle 8 7 3 Pinning the lifts as stands 9 7 4 Lowering a vehicle to the ground 9 7 5 Using the lifts with support stands 10 Transferring a load to support stands 10 Removing support stands 10 8 Maintenance and Inspection 11 8 1 Structural inspection 11 8 2 Air hose inspection 11 8 3 Maintenance instructions 11 8 4 Air control unit cleaning instructions 12 8 5...

Страница 4: ...erform improperly resulting in injury or death Always use lift on a hard level surface capable of sustaining the load Be sure surface is clean and free of debris cracks and chips The lift system is designed to lift over the road vehicles with rims of at least 21 inches in diameter 14 inches in diameter if the manufacturer supplied optional adapters are used NEVER use the lift system on vehicles wi...

Страница 5: ...ray Manufacturing name Please contact MAHLE Service Solutions customer service at 800 468 2321 or tech mss us mahle com with any comments or questions 3 Symbols Use 3 1 Signal words Signal words call attention to a safety message or messages or a property damage message or messages and designate a degree or level of hazard seriousness Signal words used in this manual include Keyword Probability of...

Страница 6: ...phasized and understood The owner manager must make this manual available to all personnel using this jack at your direction They must read and understand the contents of this manual If the operator is not fluent in English the manufacturer s instructions and warnings shall be read to and discussed with the operator in the operator s native language by the purchaser owner making sure that the oper...

Страница 7: ...late 2 Handle grips 3 Load retention pin 4 Base post 5 Lift table tube 6 Lift pad 7 Front wheels Fig 3 Air control unit components 1 Air control unit 2 Air control levers Fig 4 CWL 20 side view 1 Front wheels 2 Roller wheel 3 Downstop lug 4 Downstop pawl 5 Downstop release handle 6 Air hose 7 Air hose holder 8 Swivel caster ...

Страница 8: ...the front or rear of the vehicle so both lifts are visible Face the vehicle and hold the air control unit with the air control levers pointing toward the vehicle and the quick couplers on the underside of the air control unit See Fig 6 for orientation Fig 6 Air control lever 9 Connect the air hose from the lift on your right to the right side of the air control unit Connect the air hose from the l...

Страница 9: ...ncoil the air hoses from both lifts Be sure the air hoses are free from all pinch points 4 Position yourself at the front or rear of the vehicle so both lifts are visible Face the vehicle and hold the air control unit with the air control levers pointing toward the vehicle and the quick couplers at the bottom of the air control unit 5 Connect the air hose from the lift on your right to the right s...

Страница 10: ...pport stands if the load retention pins will not pull out easily raise the vehicle just enough to free the load retention pins Make sure the vehicle comes down evenly on the stands 5 When the vehicle is securely supported by the support stands lower the lifts to their lowest position so the downstop pawls are automatically reset CAUTION The downstop pawls will not automatically reset until lift ha...

Страница 11: ...e downstop lugs in all positions it is excessively damaged and must be replaced before the lift can be used again Inspect the holes for the load retention pins in the base post If these holes show excessive elongation or wear on the top or bottom surfaces they must be repaired before the lift can be placed back into service Contact the manufacturer using the contact information on the back cover o...

Страница 12: ...nto the air inlet spool port 8 Insert the spool without O ring into the air exhaust spool port 9 Insert the spring s 10 Apply thread sealant to the plug s and install the plugs into the valve body Do not over tighten the plug s as the threads can very easily be damaged 8 5 Lift table adjustment The lift system has a 1 2 13 hex head cap screw mounted inside the top weldment to allow the lift table ...

Страница 13: ...inched Remove load from lifts using other lifting means remove air hoses from pinch point Lift table hits floor Floor is uneven and or rough Raise lift to lowest downstop Lift table height needs adjustment for minimum clearance See the Lift table adjustment section of this manual Lift raises slowly Low air pressure Raise air pressure to 145 psi Air control unit is dirty or damaged See the Air cont...

Страница 14: ...en 14 CWL 20 Maintenance Chart 11 Maintenance Chart Action Date Details Person responsible Receiving inspection ...

Страница 15: ...CWL 20 15 en Maintenance Chart Action Date Details Person responsible ...

Страница 16: ...en 16 CWL 20 Notes 12 Notes ...

Страница 17: ...CWL 20 17 en Notes ...

Страница 18: ...en 18 CWL 20 Notes ...

Страница 19: ...CWL 20 19 en Notes ...

Страница 20: ...en 20 TSL 50 670 90752 MAHLE Aftermarket Inc 10 Innovation Drive York PA 17402 U S A Phone 800 468 2321 Fax 717 755 8304 E mail tech mss us mahle com www servicesolutions mahle com ...

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