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MODEL 72450A  1/2 TON CAPACITY AIR/HYD. UNDER HOIST TRANSMISSION JACK

SETUP • OPERATING • MAINTENANCE INSTRUCTIONS

 PROFESSIONAL LIFTING EQUIPMENT

®

BEFORE  USING  THIS  JACK,  READ  THIS  MANUAL 
COMPLETELY  AND  THOROUGHLY,  UNDERSTAND  ITS 
OPERATING  PROCEDURES,  SAFETY  WARNINGS  AND 
MAINTENANCE REQUIREMENTS. FAILURE TO DO SO COULD 
CAUSE  ACCIDENTS  RESULTING  IN  SERIOUS  OR  FATAL 
PERSONAL INJURY AND/OR PROPERTY DAMAGE.

The use of portable automotive lifting devices is subject to certain 
hazards  that  cannot  be  prevented  by  mechanical  means,  but 
only by the exercise of intelligence, care, and common sense. It 
is  therefore  essential  to  have  owners  and  personnel  involved  in 
the use and operation of equipment who are careful, competent, 

trained, and qualified in the safe operation of the equipment and 

its  proper  use.  Examples  of  hazards  are  dropping,  tipping,  or 
slipping of motor vehicles or their components caused primarily by 
improperly securing loads, overloading, off-centered loads, use on 

other than hard level surfaces, and using equipment for a purpose 
for which it was not designed.
It is the responsibility of the owner to make sure all personnel read 
this manual prior to using this device. It is also the responsibility of 
the device owner to keep this manual intact and in a convenient 
location for all to see and read. If the manual is lost or not legible, 
contact Norco Industries, Inc. for a free replacement. If the operator 

is not fluent in English, the product and safety instructions shall be 

read  to  and  discussed  with  the  operator  in  the  operator’s  native 
language by the purchaser/ owner or his designee, making sure 
that the operator comprehends its contents. 

WARRANTY

This floor service jack is covered by a Limited Lifetime Warranty.

For details see the back cover of Norco’s product catalog.

IMPORTANT: READ THESE INSTRUCTIONS BEFORE OPERATING

WARNING

DO NOT operate the foot pump after the ram has reached 

• 

its full extension! This may cause over-pressurization of 

the hose and fittings causing fluid leakage. 

Adequately support the vehicle before starting repairs.

• 

Consult the in-ground or above-ground lift manufacturer for the 

• 

recommended support procedures and under hoist support 
stand locating points.
Support the engine with a support stand before unbolting the 

• 

transmission from the engine.
Do not lift or support the vehicle with this jack.

• 

Do not use the jack beyond its rated capacity.

• 

Do not exceed 100 PSI air pressure.

• 

Be sure setup is stable and secure.

• 

Use of this jack with locating adapters and load restraints 

• 

provided is limited to the removal, installation and 
transportation (in the lowered position) of transmissions and 
transfer cases.
Center load on saddle.

• 

Consult the vehicle manufacturer for the transmission’s center 

• 

of balance.

Slowly depress the “RELEASE” portion of the pump pedal to 

• 

lower the load.
Use only on a hard level surface.

• 

No alterations shall be made to this product and use only with 

• 

approved adapters.

SETUP

Refer  to  the  exploded  view  parts  drawing  for  identification, 

1. 

location and position of parts.

Before  operating  jack,  open  the  black  vent  knob  (index  #10) 

2. 

on top of the cylinder nut (index #9) by turning it all the way in a 
counterclockwise direction.

The air quick disconnect configuration of your choice can be 

3. 

installed in the threaded hole beneath the index #85 foot pedal.

Lay the power unit on a table top with the hydraulic block end 

4. 

over  the  edge  of  the  table.  Install  the  index  #58  legs  onto  the 
bottom  of  index  #51  hydraulic  block  with  the  bolts  and  washers 
provided.

Install the index numbers 130 and 132 caster wheel assemblies 

5. 

on  to  the  ends  of  the  legs  and  secure  them  with  the  nuts  and 
washers provided.

Install  the  saddle  assembly  (index  #133)  on  top  of  the  index 

6. 

#29 ram and secure them with the index #165 bolt.

Chains,  ratchet  tie  downs,  or  other  acceptable  means  of 

7. 

restraining and securing the transmission to the jack’s saddle must 
be readily available and easily anchored to the saddle.

Make sure the system air pressure supplied to the jack is clean 

8. 

and dry and does not exceed 100 p.s.i.

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