Winch Transmission Clutch Sealing Piston Ring for John Deere 4000 Series – R33248

Fits Models At A Glance:

• John Deere Crawler Dozers (J Series): 450J, 550J, 650J — Serial Number 159987 and Up; 700J — Serial Number 139436 and Up
• John Deere Crawler Dozers (K Series): 450K — Serial Number 304771 and Up; 550K, 650K, 700K
• John Deere Crawler Dozers (L & P Series): 700L — Serial Number 383562 and Up; 450P, 550P, 650P — Serial Number 01837 and Up; 700P — Serial Number 11340 and Up
• John Deere Crawler Dozers: 714PR

• John Deere Forestry – D Series Skidders: 360D, 460D, 560D, 660D
• John Deere Forestry – E Series Skidders: 540E, 640E, 740E, 548E, 648E, 748E
• John Deere Forestry – G Series Skidders: 540G — Before Serial Number 624870; 548G — Before Serial Number 578013; 640G — Before Serial Number 612567; 648G — Before Serial Number 612635; 740G, 748G, 848G
• John Deere Forestry – G-II Series Skidders: 540G-II, 548G-II, 640G-II, 648G-II, 748G-II
• John Deere Forestry – G-III Series Skidders: 540G-III, 548G-III, 640G-III, 648G-III, 748G-III
• John Deere Forestry – H Series Skidders: 540H, 548H, 640H, 648H, 748H, 848H, 648HTJ, 748HTJ, 848HTJ
• John Deere Forestry – L Series Skidders: 640L, 648L, 748L, 848L, 948L, 640L-II, 648L-II, 748L-II, 848L-II, 948L-II, 640L-III, 648L-III, 748L-III, 848L-III, 948L-III
• John Deere Forestry – Bogie Skidders: 768L-II, 768L-III

Key Notes:

• Part Numbers: R33248
• Type: Sealing piston ring, winch transmission clutch
• Winch Compatibility: John Deere 4000 Series winch (Models 40, 4000 and 4000S)
• Weight: 0.01 lbs (0.005 kg)
• Serial Number Notes: On the J, K, L and P Series dozers, fits machines from the serial numbers shown above. On the 540G, 548G, 640G and 648G, fits machines built before the serial numbers shown above. All other models listed fit every serial number.
• Related Parts: The winch clutch input shaft bearing is AT139681, the side cover O-ring is T51625 and the free spool internal oil seal is AT173348
• Application: Seals hydraulic oil pressure at the winch transmission clutch so the clutch engages fully and holds.
• Condition: Replacement Part for John Deere Equipment

Common Use Case or Symptoms: Use when the winch clutch slips, is slow to engage, or loses pressure, or during any winch clutch rebuild — a worn sealing ring lets oil bypass and the clutch can't clamp.

Why Choose Broken Tractor:

• ✅ Restores Full Clutch Engagement on the 4000 Series Winch – stops pressure loss at the clutch
• ✅ Part of a Complete Winch Rebuild Lineup – bearings, seals and O-rings in one order
• ✅ Fast Shipping from a U.S.-Based Team – ready to ship from our U.S. warehouses