Powermate LiftGate LV-7 User manual

T02-017.00 For all serial numbers (Product may not be exactly as shown.)
LE-1 Wire Coil Replacement Instructions
PowerMate LV-7 Ballnut Replacement Instructions
L P International Inc. / PowerMate®
Box 696, 151 Savannah Oaks Dr., Brantford, Ontario N3T 5P9
Toll Free: 1-800-697-6283 Telephone: [phone]
Fax: [phone] Email: [e-mail]

PowerMate
®
LV-7 Ballnut Replacement Instructions
T02-014.00
1
This process should take approximately ¾ - 1 hour.
Step A: Remove the Screw Guard
PROCEDURE: Swing the LiftGate unit out of the vehicle and engage the base main arm lock pin.
Extend the unit until the toeplate is just touching the ground. This is to make disengaging the outer
frame from the screw assembly easier.
Move the circuit breaker switch to the OFF position and depress the red heavy duty switch to OFF.
Remove the two (2) Phillips screws from the top of the screw guard and the remove guard.
Step B: Remove the Drive Screw Assembly
PROCEDURE: Remove the four (4) top ¼” countersunk screws holding the bearing retainer (7/16”
wrench and 5/32” Allen key).
Remove the shim from between the bearing retainer and the inner frame.

PowerMate
®
LV-7 Ballnut Replacement Instructions
T02-014.00
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Remove the four (4) button head cap screws (3/16” Allen key) holding the outer frame to the screw
assembly ballnut bracket.
Grip the screw assembly and remove up and out, disengaging the drive screw from the motor.
Step C: Remove Ballnut Locknut
PROCEDURE: Loosen the two (2) set screws in the ballnut locknut. Unthread the ballnut locknut from
the ballnut.

PowerMate
®
LV-7 Ballnut Replacement Instructions
T02-014.00
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Step D: Remove Lower Drive Components
PROCEDURE: Remove roll pin from lower coupling using a 3/16” punch. Be sure to properly support
drive screw so as not to bend it. Remove the lower components from drive screw.
Step E: Remove Original Ballnut
PROCEDURE: Hand-turn the ballnut towards bottom end of drive screw. Place arbor tool onto end of
drive screw. Continue to wind ballnut down and onto the arbor.

PowerMate
®
LV-7 Ballnut Replacement Instructions
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Step F: Add New Ballnut
PROCEDURE: Transfer the new ballnut onto the arbor tool. Slide the arbor and ballnut onto the bottom
end of drive screw. Wind the ballnut onto thread of drive screw then remove the arbor.

PowerMate
®
LV-7 Ballnut Replacement Instructions
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Step G: Add Lower Drive Components
PROCEDURE: Re-install lower components of drive screw assembly in the correct order. Re-install the
roll pin into the coupling. Support the drive screw so as not to bend it.
Step H: Grind Flat Spot on Ballnut Thread
PROCEDURE: Dry fit the ballnut, disc spring washer, ballnut bracket, and ballnut locknut. Hand- tighten
the ballnut locknut and then 1/8th of a turn extra. Mark position of 1st set screw on the ballnut with a
black marker.
Unthread the ballnut and release components to allow access to the ballnut.
Using an angle grinder, create a flat spot on the thread of the ballnut located at the black mark.

PowerMate
®
LV-7 Ballnut Replacement Instructions
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Step I: Assemble Ballnut and Ballnut Locknut
PROCEDURE: Re-install the ballnut, disc spring washer, ballnut bracket and ballnut locknut. Apply grease
to the disc spring washer and top side of ballnut bracket around protruding ballnut.
When re-tightening the ballnut locknut, be sure that the 1st set screw lands at the flat spot.
Tighten both set screws.

PowerMate
®
LV-7 Ballnut Replacement Instructions
T02-014.00
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Step J: Install the Screw Assembly
PROCEDURE: Guide the drive screw assembly back into the inner frame,
making sure the bearing retainer and ballnut bracket are oriented properly
for installation.
Attach the drive screw to the motor.
Insert the shim between the bearing retainer and inner frame, making sure
orientation is correct.
Install the four (4) top ¼” countersink screws.
Step K: Attach the Ballnut Bracket
PROCEDURE: Power on the machine and raise or lower the ballnut bracket so that the holes in the outer
frame are aligned.
Install the four (4) button head cap screws to attach the outer frame to the ballnut bracket.
Run machine up and down to check that machine operates properly.

PowerMate
®
LV-7 Ballnut Replacement Instructions
T02-014.00
8
Step L: Install the Screw Guard
PROCEDURE: With the Toeplate on the ground, insert the screw guard into position through the ballnut
bracket. Guard will stop about 1” from proper fit.
Gently push the guard inwards and allow it to drop into the screw guard bracket.
Continue to push the guard down until screw holes are aligned at top of Guard.
Install the two (2) Phillips Screws.