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Operating Instructions • Preventative Maintenance
SETUP
PLEASE REFER TO THE EXPLODED VIEW DRAWING IN THIS
MANUAL IN ORDER TO IDENTIFY PARTS.
1 . Remove the bolt (19) from under the handle yoke (21) . Insert the
handle tube (6) in the handle yoke (21) while simultaneously inserting
the locking rod (18) in the handle yoke guide holes .
2 . Raise the lock lever (11) on the handle assembly up so the locking
rod does not have to come in contact with the handle yoke bracket .
Rotate the release knob (1) at the top of the handle back and forth
until you feel the bottom of the handle engage the release valve
fitting (33) inside and at the bottom of the handle yoke .
3 . Align the handle yoke hole that accepts the bolt with the receiving
hole in the bottom of the handle . Once the holes are lined up,
secure the handle to the handle yoke with the bolt (19) provided .
4 . Move the handle assembly (6) up and down while simultaneously
pushing down on the lock lever (11) until the locking rod engages
one of the locating holes in the handle yoke bracket (22) . There are
three holes in the handle yoke bracket that are used to lock the
handle in either a horizontal, angular or almost vertical position .
5 . Install the quick disconnect (61) of your choice in the back of the
air valve (4) . The air valve and hose are equipped with a loop that
secures them to the "L" shaped hook on the upper portion of the
handle (6) .
6 . Secure the air valve and hose to the handle and connect a shop air
line to the air valve .
7 . Sometimes air gets trapped in the hydraulic system during shipment .
An air bound hydraulic system feels spongy when pumped .
TO PURGE AIR FROM THE HYDRAULIC SYSTEM:
a . Open the release valve by turning the knob (1) at the top of the
handle in a counterclockwise direction two full turns from the
closed position .
b . Depress the air valve (72) for approximately 30 seconds .
c . Close the release valve by turning the knob (1) in a clockwise
direction until tight .
d . Depress the air valve until the ram raises to maximum height .
e . If the condition remains, repeat steps "a" through "d" until all the
air is purged from the system .
OPERATING INSTRUCTIONS
This is the safety alert symbol used for the OPERATING
INSTRUCTIONS section of this manual to alert you to
potential personal injury hazards . Obey all instructions to
avoid possible injury or death . IMPORTANT: Before
attempting to raise any vehicle, check vehicle service manual
for recommended lifting surfaces .
1 . Become familiar with the identification and function of the operating
jack components .
a . The ram is the shaft that comes out of the jack when you depress
the air valve and lifts the load .
b . The ram is equipped with an extension screw which can be
unscrewed to extend from the ram if there is not enough
hydraulic stroke to raise the load to the desired height . If
additional height is required, extension adapters can be inserted
in the hole on top of the extension screw .
c . Larger diameter saddles can be inserted in the extension screw
when requiring a larger diameter saddle surface .
2 . Chock the vehicle's tires that will not be lifted off the ground prior
to lifting the vehicle and if available, apply the emergency brake or
any other method of braking .
3 . Position the jack at the designated lift point . Estimate the required
MTN5520B 03/27/12
ram travel to raise the vehicle to the desired height . If the desired
vehicle height exceeds the entire ram travel, unscrew the extension
screw to make up the difference and add an extension adapter
if necessary .
4 . Turn the knob at the top of the handle all the way in a clockwise
direction until tight . Lock the handle in a position that will not
interfere with the vehicle when raised or lowered . Keep the handle
in that locked position until the work is completed and you are ready
to remove the jack from use .
5 . With the jack in the lowered position, push the jack under the
vehicle . IMPORTANT: Use the vehicle manufacturer's recommended
lifting procedures and lifting points before lifting loads .
6 . In most cases 100 P .S .I . input air pressure (do not exceed 200 P .S .I .)
will lift the maximum capacity load not to exceed 22 tons . Depress
the air valve until the top of the ram comes close to the designated
lift point . Make sure the designated lift point is flat, parallel to the
ground and free from grease, any kind of lubricant, and debris .
Proceed with pumping the jack in order to lift the vehicle to the
desired height . During lifting, inspect the position of the jack in
relation to the ground and the ram in relationship to the load to
prevent any unstable conditions from developing . If conditions
look like they are becoming unstable, slowly lower the load and
make appropriate setup corrections after the load is fully lowered .
7 . When the vehicle or load is lifted to its desired height, immediately
place safety support stands (jack stands) in their designated
locations and adjust the stands' support columns up as close to the
designated vehicle support points as possible . Although jack stands
are individually rated, they are to be used in a matched pair to
support one end of the vehicle only . Stands are not to be used to
simultaneously support both ends or one side of a vehicle . Slowly
and carefully turn the release knob in a counterclockwise direction to
gently lower the vehicle onto the safety support stands (jack stands) .
Make sure the vehicle is safely supported by the safety support
stands' (jack stands) saddles and not the locating lugs of the
saddles . Inspect the relationship of the safety support stands (jack
stands) with the ground and the safety support stand (jack stand)
columns and saddles with the vehicle to prevent any unstable
conditions . If conditions look unstable, close the jack's release knob
and depress the air valve to raise the vehicle off the safety support
stands (jack stands) . Make the appropriate setup changes and slowly
and carefully lower the vehicle onto the safety support stand
saddles .
8 . After the work is done, close the release knob and depress the air
valve until the jack is high enough to remove the vehicle or load
from the safety support stand saddles . Be sure load is stable . If it
is not, lower load back onto safety support stands . Make
appropriate setup corrections and repeat the step again . Remove
the safety support stands from under the vehicle, being very careful
not to move the vehicle .
9 . Turn the release knob in a counterclockwise direction very slowly
and carefully to lower the vehicle or load down to the ground .
PREVENTATIVE MAINTENANCE
This is the safety alert symbol used for the PREVENTATIVE
MAINTENANCE section of this manual to alert you to
potential personal injury hazards . Obey all instructions to
avoid possible injury or death . IMPORTANT: The number one cause
of jack failure in air/hydraulic jacks is dirt and moisture in the air motor
and/or hydraulic system . The shop air supply should be equipped with
water and dirt filter traps that should be emptied or cleaned according
to a monthly maintenance schedule . An in line oil lubricator will extend
the life of air/hydraulic jacks .
Inoperable jacks caused by poorly
equipped or maintained shop air
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