Mountain MTN5620AHA Manuel D'opération page 3

Operating Instructions • Preventative Maintenance
SETUP AND OPERATING INSTRUCTIONS
This is the safety alert symbol used for the SETUP and
OPERATING INSTRUCTIONS section of this manual to alert
you to potential personal injury hazards . Obey all instructions
to avoid possible injury or death .
PLEASE REFER TO THE EXPLODED VIEW DRAWING IN THIS
MANUAL IN ORDER TO IDENTIFY PARTS.
1 . Assemble the pump handle sections together to make one complete
handle . One end of the handle has a cut out that will fit over the
cross pin in the release valve in the base of the jack . This connection
enables the user to turn the release valve in a clockwise direction
until tight in preparation for pumping the jack and raising the load .
Slowly turning the release valve in a counterclockwise direction will
lower the load . It is not necessary to open the release valve more
than two full rotations .
2 . The opposite end of the pump handle must be inserted in the pump
piston receiver linkage in preparation for pumping the jack . Install an
air quick disconnect fitting of your choice in the back of the air valve .
The jack can be pumped up manually or by depressing the air valve .
3 . The ram is that portion of the jack which extends when the jack is
pumped . There is a round saddle at the end of the ram which is the
part that makes contact with the load to be lifted . The saddle is
actually part of a threaded extension screw that fits on the inside of
the ram . The saddle height can be extended by turning it in a
counterclockwise direction . Extending the height of the saddle
sometimes is necessary when the full stroke of the ram is not
adequate to lift a load to its desired work height .
4 . Sometimes air gets trapped in the hydraulic system during shipment .
An air bound hydraulic system feels spongy when pumped and may
not allow the jack to pump full incremental strokes .
TO PURGE AIR FROM THE HYDRAULIC SYSTEM
a . Open the release valve by turning the handle in a
counterclockwise direction two full turns from its closed position .
b . Pump the handle ten full strokes .
c . Close the release valve by turning the handle in a clockwise
direction until tight .
d . Pump the jack until the ram is extended to maximum height .
e . If the condition seems better but is still detectable, repeat steps
"a" through "d" until all the air is purged from the system .
5 . Do not lift more than one wheel of a vehicle at a time . Activate the
hazard warning flasher, turn off ignition, move automatic selector to
park position or reverse gear if it is a manual transmission and set
parking brake . The wheel diagonally opposite from the wheel being
lifted shall be chocked in both directions . Consult the vehicle
manufacturer for the tire changing procedure and lift points .
6 . Position the jack at the appropriate lift point . Estimate the required
ram travel to raise the load to the desired height . If the desired
height exceeds the entire ram travel, unscrew the extension screw to
make up the difference .
7 . Pump the jack up until the saddle comes close to the lift point .
Make sure the lift point is flat, parallel to the ground and free from
grease, any kind of lubricant, or debris . Continue pumping the jack
to lift the load to the desired height . During lifting, inspect the
position of the jack in relation to the ground and the saddle in
relation 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 .
8 . When the load is lifted to its desired height, immediately place
jack stands in their designated locations and adjust the stands'
support columns up as close to the designated supports points as
possible . Although jack stands are individually rated, they are to be
MTN5620AHA rev. 1/29/13
used in a matched pair to support the load . Slowly and carefully
open the release valve of the jack in order to gently lower the load
onto the jack stands . Make sure the load is safely supported by the
jack stands' saddles and not the locating lugs of the saddles . Inspect
the relationship of the jack stands with the ground and the jack
stand columns and saddles with the load to prevent any unstable
conditions . If conditions look unstable, close the jack's release valve
and pump the jack to raise the load off the jack stands . Make the
appropriate setup changes and slowly and carefully lower the load
onto the jack stand saddles .
9 . After the work is done, close the release valve and pump the jack
high enough to remove the load from the jack stand saddles . Be
sure the load is stable . If it is not, lower the load back onto the jack
stands . Make appropriate setup corrections and repeat the step
again . Remove the jack stands from under the load, being very
careful not to move the load .
10 . Open the jack's release valve very slowly and carefully to lower the
load 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: Any jack found
to be defective as a result of worn parts due to lack of
lubrication or air/hydraulic system contaminated with water,
rust and /or foreign materials from the air supply or other
outside source is not eligible for warranty consideration .
1 . Always store the jack in a well protected area where it will not be
exposed to inclement weather, corrosive vapors, abrasive dust, or
any other harmful elements . The jack must be cleaned of water,
snow, sand or grit before using .
2 . The jack must be lubricated periodically in order to prevent
premature wearing of parts . A general purpose grease must be
applied to the threads on the extension screw . Do not lubricate any
portion of the lift saddle and make sure the saddle is free from
grease, any kind of lubricant, or debris before using the jack .
3 . It should not be necessary to refill or top off the reservoir with
hydraulic fluid unless there is an external leak . An external leak
requires immediate repair which must be performed in a dirt-free
environment by qualified hydraulic repair personnel who are familiar
with this equipment . Authorized Service Centers are recommended .
IMPORTANT: In order to prevent seal damage and jack failure, never
use alcohol, hydraulic brake fluid, or transmission oil in the jack . Use
Chevron Hydraulic Oil AW ISO 32 or its equivalent Unocal Unax AW 150 .
4 . Every jack owner is responsible for keeping the jack label clean and
readable . Use a mild soap solution to wash external surfaces of the
jack but not any moving hydraulic components .
5 . Do not attempt to make any hydraulic repairs unless you are a
qualified hydraulic repair person that is familiar with this equipment .
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