Description
There’s nothing more frustrating than watching expensive hydraulic fluid drip onto the ground while your loader gets sluggish or your three-point hitch starts drifting down. When those O-rings and gaskets in your Ford’s SL hydraulic pump start failing, you get both the mess of external leaks and the performance loss from internal bypassing. This seal and gasket kit gives you everything needed to restore tight seals and get your hydraulics working like they should again.
What You’re Getting
- Complete set of O-rings and gaskets designed specifically for SL-type pump sealing points
- High-pressure rated seals that handle the demands of your hydraulic system without failing
- Fresh rubber compounds that restore proper sealing compression even in worn pump housings
- Quality materials engineered to resist heat cycles and hydraulic fluid breakdown
Built for Real Farm Work
This kit works with Ford New Holland 40 Series tractors (5640, 6640, 7740, 7840, 8240, 8340) and TS Series tractors (TS100, TS110) equipped with SL hydraulic pumps. These tractors use their hydraulic systems for everything from three-point hitch control to loader work, implement positioning, and transport duties where consistent hydraulic performance is critical.
Made to Last
Farm hydraulics take a beating with constant pressure cycles, temperature swings, and contamination challenges. These seals use updated compounds that maintain flexibility while providing positive sealing under high pressure. Unlike generic O-rings that might fit, these are manufactured to the exact specifications your SL pump needs for proper sealing without excessive squeeze that causes premature failure.
Good to Know
This seal kit pairs with hydraulic pump 404770 for complete pump servicing. The key to success is absolute cleanliness – any contamination ruins new seals immediately, so drain the system completely and clean everything thoroughly before starting work. Use assembly lube on all seals during installation to prevent dry assembly damage. Since all the seals have seen the same service hours, replace them all at once rather than trying to save a few bucks on seals that look okay.






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