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Troubleshooting Guide
Engine/Motor and Drive Pulleys Alignment
Troubleshooting Guide
Sdoc120507
4-9
4
4.5
Engine/Motor and 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 within 1/8" square 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 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.
4.7
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.
Check the power feed shaft. Visually inspect the bearings. The shaft should move neither
in or out nor side to side.