Track Adjuster Grease Check Valve for Case Dozers & Excavators – D35287

Fits Models At A Glance:

Case Crawler Dozers — 300 and 400 Series:

• 310G: Serial Number 3039619 and After
• 350, 350B
• 450: All serial ranges
• 450B, 450C, 455B, 455C

Case Crawler Dozers — 550 and 650 Series:

• 550, 550E, 550G, 550H, 550H-IND
• 650, 650G, 650H
• 650K: Series 1, 2 and 3
• 650L
• 650M: LT and WT, Tier 4B, including MY23

Case Crawler Dozers — 750 Series:

• 750: After Serial Number 7070351
• 750H
• 750K: Series 1 and 2
• 750L
• 750M: LT, WT and LGP — Tier 4A, Tier 4B, including MY23

Case Crawler Dozers — 850 Series:

• 850: All serial ranges (North America and Europe)
• 850B, 850C, 850D, 850E, 850G, 850H
• 850K: Series 1, 2 and 3
• 850L
• 850M: LT, WT and LGP — Tier 4A, Tier 4B, including MY23
• 855C, 855D, 855E

Case Crawler Dozers — 1000 and 1150 Series:

• 1000D: Serial Number 7103001 and After
• 1150 (Torque Converter): All serial ranges
• 1150B, 1150C, 1150D, 1150E, 1150G, 1150H
• 1150K: Series 3
• 1150M: LT, WT and LGP, Tier 4A
• 1155D, 1155E

Case Crawler Dozers — 1450 Series and Larger:

• 1450, 1450B, 1455B, 1550
• 1650L, 1650M: 1650M WT, LGP and XLT
• 2050M: LT, WT, LGP and XLT PAT

Case Crawler Excavators:

• 880C, 880D
• 1080, 1080B
• 1187, 1187B, 1187C
• 1280, 1280B
• 40 Drott Series-E: Serial Number 6271140 and After
• 50 Series-E: Serial Number 6280543 and After

Case Trenchers and Layers:

• 475 Cable Layer: All
• 6010 Horizontal Directional Drill

Key Notes:

• Part: Track Adjuster Grease Check Valve (Check Ball Assembly)
• Part Numbers: D35287
• Location: Track adjuster (grease recoil cylinder) — where you pump grease to tighten the track
• Threads: 5/8" - 18 UNF and 1/8" NPTF
• Weight: 0.10 lbs (0.05 kg)
• Application: Lets grease into the track adjuster and holds it there to keep track tension. Loosening it releases the grease to slacken the track.
• Safety: The track adjuster holds grease under high pressure. Loosen the valve slowly, and never stand in front of it.
• Condition: Aftermarket replacement part

Common Use Case or Symptoms: Use when the track keeps losing tension, grease leaks from the adjuster valve, or the valve won't take grease or won't release — a failed check valve can't hold tension, and the track runs loose or throws.

Why Choose Broken Tractor:

• ✅ Thread Sizes Listed – 5/8" - 18 UNF and 1/8" NPTF to match your adjuster
• ✅ Fits Six Decades of Case Crawlers – 350 through 2050M
• ✅ Fast Shipping from a U.S.-Based Team – ready to ship from our U.S. warehouses