Johnson Level & Tool Mfg. 40-6200 - Manual (Page 4)

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The misalignment visible between the 12 o’clock and 6 o’clock targets and the 9 o’clock target indicates
amount of “horizontal” misalignment. To correct, move the 6 o’clock target to 3 o’clock. Adjust the
position of the front and/or back feet of one or both of the machines horizontally to correct for horizontal
misalignment until the laser line strikes the target centers of both the 3 o’clock and 9 o’clock targets
simultaneously. Verify you are also hitting the center of the 12 o’clock target. Remember to test and
adjust for proper belt tension while aligning. After adjustment, the laser line should now strike the bottom
of the groove of all three targets, indicating excellent alignment.
User has option to turn sheaves every 90 degrees and check laser and targets. They should still show
excellent alignment as long as the alignment prerequisites were met, especially shaft runout and sheave
wobble.
Restore equipment to normal.
5. Belt Alignment Tolerances
Per Gates Rubber Company, a prominent V-belt manufacturer, good alignment tolerance is as follows:
-V-belt drive sheave alignment should be less than ½
° or 1/10” per foot of drive center distance after
tensioning. -Synchronous, Polyflex® and Micro-V® belts should be within ¼° or 1/16” per foot of driver
center distance. Using the PowerLine™ laser and targets and following the correct alignment procedure
will insure that the alignment will always be well within these tolerance values.
Using PowerLine™ Level Vial:
Each PowerLine™ laser emitter has a 40 arc minute vial mounted to the top of the unit. Use it to check
levelness of pulleys, sprockets, conveyors, etc. as needed. The vial is preset level in the factory so it runs
true with the bottom magnetic surface of the housing.
Maintenance:
The PowerLine™ is weather-resistant, rugged, and durable. The front optic window is coated with a high
performance film. Clean lens with a lint free cloth or swab using a premium glass cleaner solution. Clean
housing and targets with damp cloth only. Magnets are nickel coated to prevent rusting.
Calibration:
The PowerLine™ laser is factory calibrated so that the laser line is emitted exactly 0.312” above the bottom
magnetic surface. No field calibration is required.
Battery Replacement:
To replace discharged batteries, unscrew and remove the 2 Duracell size “AAA” alkaline batteries and
install new ones. The negative ends go in first. Batteries are included in the case at initial shipment.
Technical Specifications: Model 80 Pulley Alignment System
Sheave Alignment Tool: 1 ¾” x 6 ¾” x 5/8”
Target Dimensions:
1 ¼” diameter x 1” length
Weight of Laser Tool: 14 oz.
Vial: 40 Arc min.
Beam Spread: 60 inches @ 36 inches
Line Width: 1/16” @ 30 inches
Housing / Target: High Grade Hard Anodized Aluminum
Targets: Qty. 3- adjustable over 5/8”
Magnets: Nickel Plated Rare Earth
Power: Qty. 2- Size “AAA” Batteries (10 hrs.)