Wisconsin — Clutch Reduction Unit Oil Level and Change
Maintenance
From a Wisconsin service manual covering: FM-X4B7D, V-460D, V-461D, V-465D, V460D, V461D, V465, Y-128-S1, YB-85A. Check it applies to your exact model before use.
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Before you start
- No oil should be put in the clutch housing (dry disc type).
Procedure
- Maintain gear case oil level to the oil saber gauge mark or plug opening.
- Use No. 30 S.A.E. crankcase oil for Rockford units.
- Use high grade transmission oil S.A.E. No. 90 to No. 110 Viscosity for Twin Disc units.
- Change oil every 2000 hours of service while unit is warm.
Specs & values
- Rockford: No. 30 S.A.E. crankcase oil
- Twin Disc: S.A.E. No. 90 to No. 110 transmission oil
- Change interval 2000 hours
Source: Wisconsin service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.