Warner Electric • 800-825-9050
P-1177-WE • 819-0457
15
Troubleshooting Checklist (Continued)
D. Symptom: Noisy clutch/Vibration
Problem
Possible Causes
Solution
Failed bearing
• Loose mounting (bolt not torqued properly) • Replace (see Mounting Figure 3, page 6)
• Field assembly movement restricted
• Confirm proper Anti-rotation
(see Anti-rotation, Figure 4, page 6)
Adapter plate rattles against
• Some noise is normal
• If noise is excessive, repair or replace
anti-rotation pin
anti-rotation device. (Follow OEM’s
Specifications. See Anti-rotation,
Figure 4, page 6).
Clutch loose on shaft
• Loose mounting (bolt not torqued properly) • Tighten mounting bolt to specification.
See Mounting, Figure 3. page 6.
• Mounting bolt too long and bottoms
• Use correct length bolt (see
in engine shaft before clamping clutch
Mounting page 6, Figure 3)
• Mounting washer too thin and deforms
• See Figure 1 and Warning on page 4.
when bolt is tightened.
• Shaft bottoms on D-drive
• Use proper spacer (see Mounting page 6)
Clutch not mounted square
• Ground Drive Spacer mounting shoulder
• Replace
not squared. See Mounting Figure 3.
• Clutch integral key hitting end of keyway
• Space clutch away from radius in shaft
in engine shaft
keyway.
• Incorrect or no chamfer on ground
• Increase chamfer on ground drive spacer.
drive spacer.
See Caution, Figure 3, page 6.
Broken Spring
• Loose mounting
• Replace clutch
A clutch with broken rivets or springs may separate from the shaft and cause personal injury.
Burnishing Procedure when installing a
new MagStop
®
Clutch/Brake
This procedure should be performed with the load
attached (mowing deck, snowblower,
pump etc.)
Note:
Do NOT add additional load
(e.g. cutting grass).
1. Run engine at full throttle and engage load
bringing load to full speed then disengage
load.
2. Let load come to a full stop then engage
again.
3. Repeat these procedures (1 and 2)
10 times. After burnish procedure is
complete, to maximize deck drive train
life, always engage clutch at half throttle.
