MAINTENANCE AFTER EVERY YEAR OF OPERATION
PowerMate
Operation Manua
This equipment is designed for use as a heavy duty lifting device. To ensure operator safety and
continuing trouble free operation, have the equipment thoroughly checked by a trained and
competent service person at least once a year. This maintenance should be performed using the
following procedure.
1. Place a load of at least 500 pounds (230 kilograms) on the equipment. Cycle the equipment up
and down several times in order to evaluate its current condition. This load test will help reveal
the condition of the drive and brake systems, the frame structures and the electrical
components. Improper conditions may be exhibited by excessive vibration, unusual noise or
slow operation.
2. Check the inner and outer frame assemblies for bending, flattening, twisting, looseness or
worn surfaces of the frame members. Check the frame roller tracks for cracks and worn
surfaces.
3. Check the rollers for free rotation. Lubricate the roller axles with light machine oil.
4. Check that the two main frame wheels and main frame axle are in good condition. Lubricate
the two main frame wheels with multi-purpose grease.
5. Check that the strapbar mounting hardware is secure. Check that the load binding straps are
not cut or frayed and that the strap locking handles are secure.
6. Remove the drive screw as outlined under “Drive Screw Removal and Installation”. Clean the
drive screw and ballnut. Do not remove the ballnut from the drive screw.
7. Check for a close running fit between the drive screw and the ballnut. There should be no
wobble or excessive clearance and the ballnut should run smoothly and freely. There is a small
tube on the side of the ballnut for the re-circulation of the ball bearings. Check that the 2 tube
halves are fastened tightly together. Check that the area of the outside threads at the top of the
ballnut is in good condition. If any of these checks reveal a problem, replace the ballnut as
outlined in the manual.
8. If during the test of the equipment in step #1, there was excessive vibration, check the drive
screw for straightness. Replace the drive screw as outlined in the manual if the drive screw is
at all bent.
9. Check that the ballnut locknut, drive coupling, top and bottom red urethane bumpers and brake
cap are all in good condition.
10. Replace all of the components for the brake assembly and the override bearing as outlined
elsewhere in this manual.
11. Check that the electric motor armature, brushes and bearings are in good condition.
12. Reassemble the drivescrew assembly and electric motor in the equipment as outlined
elsewhere in this manual.
PN 010670 Rev.E
Eng. 05/ 08/ 14
5.01
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