Haldex SC20LCW Type 20 Long Stroke Service Brake Chamber – Welded Clevis

Haldex is the OEM supplier for Freightliner, Volvo, Mack and Navistar air brake actuators. The SC20LCW is a Type 20 long-stroke single-diaphragm service brake chamber with a factory-welded two-hole clevis, rated at 2.50 in stroke. It is a service-only chamber for S-cam drum foundation brakes on tractor and trailer axles, and includes the Haldex Orange Alert stroke indicator and a self-piloting dust shield.Signs You Need a New Service Brake Chamber Audible air leak at the chamber, especially one that appears or worsens when the brake is applied — the classic ruptured diaphragm Pushrod stroke exceeding 2 in, or stroke that goes back out of spec shortly after adjustment Orange Alert stroke indicator band visible on the pushrod Brake pulls to one side, or one wheel applies or releases noticeably slower than the other Air system will not build or hold pressure, with the compressor cycling constantly and no other leak found Rusted-through or cracked housing, bent pushrod, loose clamp band or torn dust shield Chamber not releasing fully, causing drag and heat at that wheel end Specifications Manufacturer Haldex Part Number SC20LCW Part Type Service Brake Chamber, Single Diaphragm Chamber Type Type 20 (T20) Stroke Classification Long stroke Rated Stroke 2.50 in (64 mm) Brake Adjustment Limit 2.00 in per 49 CFR 393.47 Clevis Two-hole, welded to pushrod, included Pushrod Thread 5/8-18 UNF Clevis Pin Centerline 2.25 in from service housing face Mounting Studs 5/8-11 UNC, Grade 5, 1.50 in long Stud Spacing 4.75 in (120.7 mm) centers Air Port 3/8-18 NPTF Clampband Diameter 6.8 in (173 mm) Housing Length 4.2 in (107 mm) Housing Powder-coated steel, resistance-welded air ports Diaphragm Flexible to -40°F Core Charge None — sold outright Cross ReferencesThis part replaces or is equivalent to the following part numbers: Haldex: S127200010, S127200011, S127200215, S127200216, S127200217, S127200218, S127200220 Anchorlok: 127200010, 127200011, 127200016, 127200215, 127200216, 127200217, 127200218, 127200220 MGM: 1621901 (CS20L) Automann: 179.SC20LW225 Bendix: K058715 Volvo: 24424191, 85125543 ApplicationsThis service chamber fits S-cam drum foundation brakes calling for a Type 20 long-stroke chamber, including: Trailer axles Tractor drive and rear axle positions Freightliner and Daimler, Volvo, Mack and Navistar International chassis Verify chamber type, stroke and mounting before ordering. This is a LONG-STROKE Type 20 with a 2.00 in brake adjustment limit — a standard-stroke Type 20 has a 1-3/4 in limit, and the two must never be mixed on the same axle. Long-stroke chambers are identified by a trapezoid tag, square air ports or an "L"/"LS" stamp per SAE J1817. This is a SERVICE chamber only: it has no parking brake function and is not a substitute for a 20/20 or 30/30 spring brake. Note that a 2.50 in stroke is LONG for a Type 20 but STANDARD for a Type 30, so stroke length alone does not tell you the classification. Sold outright with no core charge.