Johnson Bandsaw maintenance
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The Johnson Bandsaw needs little regular maintenance.
- The blade should be assessed at each use to determine if it is still serviceable.
- The feed regulating piston should be refilled with hydraulic oil if it leaks enough to prevent the saw from holding in the 'up' position.
- The automatic-shutoff-lever should be checked to ensure that the saw trips off after each cut, and adjusted if the saw does not trip off.
- On a yearly basis, the gearbox oil should be drained and replaced
- 80w90 gear oil
- Loosen 2 screws on the left edge of right top cover.
- Remove top 2 screws on the right side.
- Loosen bottom 2 screws on the right side cover.
- Slide top cover towards the center of the saw.
- Pivot the right cover down. Remove drive belt.
- Remove gearbox step pulley.
- Remove 3 bolts holding the gearbox. These are near the ring gear teeth.
- Remove the gearbox out the top of the saw between the two transverse brackets (long shaft comes out last).
- Drain/fill bolt is on the side opposite the pinion gear.
- Consider replacing the gaskets on the gearbox.
- on a monthly basis, the pivot bar should be re-greased
- 2 Zerk fittings.
- Use grease gun.
- One of the fittings is clogged and not taking grease. We should try a higher pressure gun or replace the fitting.
jan 2018: re-seated needle valve & replaced oil return hose/fittings to stop leaks. Piston should maintain oil level better now.
Johnson Bandsaw maintenance log table
| Blade Check | Piston fluid level check | grease pivot | gearbox oil change | date completed | person completing |
|---|---|---|---|---|---|
| monthly | monthly | monthly | yearly | ||
| x | x | aug3 2017 | tucker/Miriam | ||
| x | x | sept 7 2017 | tucker/Miriam | ||
| x | x | oct5 2017 | tucker | ||
| x | x | Nov 9 2017 | tucker | ||
| x | x | Jan 11 2018 | tucker/Zlatan | ||
| x | x | Feb, 8 2018 | tucker/Zlatan | ||
| x | x | x | Feb, 8 2018 | tucker/Daniel | |