Sunex HD 7798 Guide Du Propriétaire page 4

OWNER'S MANUAL cont'd
If the jack can raise the load by way of activating the jack's air valve (#P53) but the rams are not extending smoothly, there may be air
trapped in the second stage cylinder.
1. With the breather screw (#26) loosened, turn the release handle (#53) two complete revolutions in the counterclockwise direction.
Make sure the jack is hooked up to compressed air.
2. Depress the jack's air valve (#P53) so the jack's air pump (#P51) is operating for 30 to 60 seconds.
3. Tighten the release handle (#53) by turning clockwise until it stops. Depress the jack's air valve (#P53) to see if the condition has
been eliminated. If better but not eliminated, repeat steps 1 through 3 several times.
4. If the condition still exists, activate the foot pedal (#47) until both rams are at full extension. Loosen the M8 X 10 Allen socket
screw in the second stage cylinder nut (#4) by turning it in a counterclockwise direction ½ turn. Activate the pump pedal
(#47) very slowly until you see hydraulic fluid escaping from the M8 X 10 screw hole. Hold pressure on the pump pedal and
simultaneously tighten the M8 X 10 screw.
5. Turn the release handle (#53) in a counterclockwise direction to see if the rams descend smoothly. If not, repeat step 4 several times.
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.
1. Lift the vehicle to the desired work height and support the vehicle in accordance with the lift manufacturer's recommended
support procedure and all the instructions and warnings in this manual.
2. Use an under hoist stand rated greater than the weight of the engine to support the engine before unbolting the transmission from
the engine or bolting the transmission to the engine.
3. Position the transmission jack directly under the transmission. The transmission jack's saddle can be raised by either foot pump
operation or depressing the air valve but 100 psi of compressed air will be necessary to lift 2,000 pounds by way of the air valve.
Also, the release valve handle (#53) must be turned in a clockwise rotation until it stops before pumping.
4. IMPORTANT: There are two methods of lowering the jack's saddle. The foot pedal release (#45) should only be depressed
to lower the saddle quickly without any weight on the saddle. Fine and slow control of lowering the load should be done
with turning the release valve handle (#53) in a counterclockwise rotation. The more the handle is rotated in a counterclockwise
rotation the faster the loaded saddle will descend.
5. Pump the jack's saddle (#56) to a height very close to the center of balance point of the transmission but do not come in
contact with the transmission. The saddle has four arms (#S20) that are in an "L" shape. The arms can be used on the short or
long portion of the "L". Loosen the bolts (#S19) to telescope the arms out as far as you need them to cradle the transmission.
Once adjusted, tighten the bolts (#S19). Make sure the bolts have tightly secured the arms (#S20) in the saddle so they do not
fall out if weight is shifted to one side more than the other. Using the foot pump pedal (#47), slowly pump the pedal until the
saddle supports the transmission. Sometimes it is necessary to turn the fore and aft adjustment handle (#S12) and or the side to
side adjustment handle (#S01) so the saddle is in proper alignment with the transmission. IMPORTANT: Never use a power
tool to activate the saddle tilt screws. Operate by hand or socket wrench.
6. The top saddle plate (#S21) has anchor loops on all four sides. Install one hook end of the tie down (#S22) into one of the loops,
pull the tie down across the top of the transmission and install the other hook end of the tie down in the loop directly across
from the other one. The tie down is a clam operated version that will tighten by pulling on the loose end of the tie down strap.
IMPORTANT: Never remove, install or transport a loaded jack without first following this step 6.
7. Make sure the tie down strap is very tight when securing the transmission to the saddle and before removing the under hoist
stand that has been supporting the engine.
8. Remove the transmission from the engine according to the instructions in the vehicle service manual. Once the transmission has
been removed from the engine, very slowly turn the release handle (#53) in a counterclockwise rotation. IMPORTANT: Do not
use the release pedal (#45) to lower the loaded jack. Always use the release handle (#53). Make sure the jack's saddle
and transmission do not hang up on any under car components, wiring, fuel lines, etc.
9. When installing a transmission, follow the above instructions but in the applicable order and according to the vehicle
manufacturer's installation procedure.
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, grit, oil, grease or other foreign matter before using.
2. Lubricate moving parts, excluding the telescopic rams, monthly with a general purpose grease.
IMPORTANT: Any jack found to be defective as a result of worn parts due to insufficient or lack of lubrication is not eligible
for warranty consideration.
7798 4 05/18/16