Maintenance
Blade Tensioner
Maintenance doc092820 4-8
4
3. Add an Automatic Transmission Fluid (ATF) such as Dexron III ATF to the hydraulic blade tensioner
as needed.
See Figure 4-5. To add enough fluid to completely fill the tensioner block:
Remove the tensioner handle and ball. Remove the sawmill blade housing covers, blade and
idle-side blade wheel.
Push the idle-side shaft housing all the way in to collapse the rear tensioner piston and fully
extend the front piston. The front piston should reach the threaded area of the piston guide.
NOTE: If the hydraulic fluid level is extremely low, collapsing the rear piston may not fully
extend the front piston. If it does not, finish the fill procedure in its entirety and repeat. The first
pass should add enough fluid to allow the front piston to fully extend. The second pass should
add enough fluid to completely fill the block.
Locate the fill plug behind the tension gauge. Clean any dirt and debris from the plug area. Use
a 7/16” wrench to remove the plug, making sure to keep the plug o-ring with the plug.
Manually extend the rear piston (the front piston should remain extended).
Use a small funnel or cup to completely fill the block with hydraulic fluid. When full, place the fill
plug in the fill plug hole and thread 1-2 turns. Manually push the rear piston all the way in to
allow excess oil and air to bleed from system through the plug. Tighten the plug all the way.
Reinstall the idle-side blade wheel, blade and blade housing covers. Reinstall the tensioner ball
and handle.
FIG. 4-5
Tension Handle and Ball
Front Piston
Piston Guide
Rear Piston
3H0610
Fill Plug
Gauge
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