Setup Instructions; Preventative Maintenance - Napa 791-7170 Operating Manual & Parts List

SETUP INSTRUCTIONS

This is the safety alert symbol used for the SETUP 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. Refer to the exploded view drawing on page 5 to identify jack components.
2. Secure the fingers (#12) to the (#10) and (#13) saddle plates with the bolts (#11), washers (#9) and wing nuts (#8).
3. Secure the end link of the chain (#15) to the base plate (#17) with the washer (#18) and nut (#20) as shown in the exploded view drawing.
4. Loosely assemble the chain hook (#16) to the base plate (#17) with the washer (#18) and wing nut (#19).
5. Secure the handle (#35) in the handle socket of the hydraulic unit (#34) with the bolt (#44).
6. Air may get trapped in the hydraulic system during freight and handling.
PURGING AIR FROM THE HYDRAULIC SYSTEM:
a. Rotate the knob (#43) at the top of the hydraulic block in a clockwise direction until tight.
Now turn it in a counterclockwise direction two full turns.
b. Activate the hand pump (#35) about 15 times.
c. Rotate the knob at the top of the hydraulic block in a clockwise direction until tight.
d. Activate the hand pump until the lift arm is raised to maximum height. You should experience a full pump stroke with each
incremental pump.
e. Repeat steps "a" through "d" until all 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.
1. Lift the vehicle to the desired work height, and support the vehicle in accordance with the lift manufacturer's recommended lifting
and support procedure
s.
2. Position the transmission jack directly under the transmission. Turn the release valve knob all the way in a clockwise direction
until it stops. Pump the handle, and the saddle assembly will start to rise. Raise the saddle to a height very close to the center of
balance point of the transmission, but do not touch the transmission.
3. Loosen the four bolts that secure the four brackets to the saddle. The brackets can be adjusted in and out to help position the
transmission on the saddle. Now gently raise the saddle so it supports the transmission. Adjust the four brackets in position
against the transmission, and tighten the wing nuts that secure the brackets to the saddle. Fore and aft saddle tilt adjustments are
sometimes necessary to properly position the transmission on the saddle. Side to side tilt positioning may be necessary for the
same reason and can be accomplished by activating the side to side tilt knob.
4. The chain should be pulled over the center of balance portion of the transmission and secured on the chain hook. Rotate the
#19 wing nut to take up the slack in the chain and secure the transmission to the saddle.
5. Remove the transmission from the engine according to instructions in the vehicle service manual.
6. Once the transmission has been disconnected from the engine, very slowly turn the jack's release knob in a counterclockwise
direction to make sure the jack's saddle and transmission do not hang up on any undertruck components, wiring, fuel lines, etc.
Continue to lower the jack all the way down.
7. Remember to secure the transmission to the saddle before installing, and follow the vehicle manufacturer's installation instructions.

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.
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 sand, grit, oil, grease or other foreign matter 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 all
zerk grease fittings, caster wheels, elevator arm, handle base pivot bolts, release mechanism and all other bearing surfaces.
791-7170
OPERATING MANUAL & PARTS LIST FOR 791-7170
3 rev. 03/04/16