Troubleshooting
Engine/Motor Drive Pulleys Alignment
4
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HDSdoc021716
Troubleshooting
4.5
Engine/Motor Drive Pulleys Alignment
1.
Install the drive belt..
2.
Use a straight edge to align the engine/motor pulley to the drive pulley. Also check that the engine pulley is
linear with the drive pulley. Loosen the engine mounting bolts and rotate the engine if necessary..
3.
Check front-to-back movement of the engine does not exceed 1/4". Tighten the motor mount U-bolts if
necessary..
4.
Engage the clutch handle and adjust the drive belt tension to 7/16" deflection with 10 lb. of force.
5.
Recheck the pulley alignment and engine squareness with the clutch handle engaged. Adjust if necessary.
6.
Adjust the drive belt support to 1/4" (±1/32) from the belt while engaged.
4.6
Power Feed Variable Speed Switch Test
With the feed rate dial switch all the way down, move the shaft of the dial back and forth to see if there is a
jerky response. Turn the dial and move the shaft back and forth again. Repeat several times. If the jerkiness
occurs at the same location on the dial several times, you need to replace the variable speed switch.
4.7
Power Feed Preliminary Test
This test will determine if the problem is a mechanical or electrical.
1.
Remove the drive belt from the power feed drive pulley..
2.
Turn the key switch to the ACC position. Put the carriage forward/reverse switch into the forward position
and turn the feed rate dial through all speeds. If the power feed motor runs properly at all speeds, the
problem is a mechanical one instead of an electrical one.
4.8
Power Feed Mechanical Test
1.
Remove the weight from the track rollers. They should turn smoothly and easily with very little play.
2.
Make sure the middle track cover is not bent or touching the top rail.
3.
Make sure the middle track oiler is free of sawdust buildup.
4.
Make sure the power feed chain is not stiff from rust. Also make sure the chain is not too tight.
5.
Make sure the power feed chain cam bearing is not touching the main frame tube.
6.
Make sure there is no sap or rust on the rails.
