The Eaton Fuller K-3725 or K3725 Master Rebuild Kit covers a complete overhaul of the RTX-14710B and RTXF-14710B range transmissions. The kit includes bearings, snap rings, washers, sliding clutches, countershaft and main drive gears, synchronizer assemblies (low-splitter and aux-direct), a range slave valve assembly, an air filter/regulator assembly, clutch brake disc assembly, input shaft assembly, gasket kit, o-ring kit, shim kit, oil seal with slinger, and air hose assemblies, along with hardware and an instruction letter. Buying this single kit number covers the key wear items across the main case, countershaft, and auxiliary section. Call us to confirm proper fit for your application.
Bearings: main case countershaft front bearings x2, reverse gear idler shaft bearings x2, and additional bearings across main and auxiliary sections
Gears: countershaft gears x4, main drive gear x1, auxiliary gear x1
Synchronizers: low-splitter synchronizer assembly (A-7254) x1, aux-direct synchronizer assembly (A-7331) x1
Clutch Components: sliding clutch (20323) x1, sliding clutch (4306647) x1, clutch brake disc assembly (85541) x1, clutch release shaft bushings x4
Snap Rings and Retainers: multiple snap rings (14317, 14750, 16628, 16763, 16980, 4302070, 4303336) and snap ring retainer x1
Valve and Air Components: range slave valve assembly (A-5000), air filter/regulator assembly (A-4740), air hose assemblies x3, 90-degree elbows x3, connectors and collets
Seals and Gaskets: gasket kit (K-2061), o-ring kit (K-1450), oil seal with slinger (K-2262), o-rings x2
Input Shaft: input shaft assembly (S-1659) x1
Hardware: shim kit (K-2805), magnetic drain plugs, magnetic discs x3, front bearing cover x1, yoke for 3rd and 4th x1, mainshaft key x1, actuator pivot pin x1, hex flange nut x1, hose strap bracket and triple hose clamps, sealant x1
Instruction letter (L-2013-02) included
Features
Fits Eaton Fuller RTX-14710B and RTXF-14710B transmissions
Includes main case countershaft front bearings (x2), reverse idler shaft bearings (x2), and multiple additional bearings
Covers synchronizer assemblies: low-splitter (A-7254) and aux-direct (A-7331)
Range slave valve assembly (A-5000) and air filter/regulator assembly (A-4740) included
Input shaft assembly (S-1659), gasket kit (K-2061), o-ring kit (K-1450), shim kit (K-2805), and oil seal with slinger (K-2262) included
Also referenced as HFK-3725
Additional Information
Kit Contents Summary (K-3725):Bearings: main case countershaft front bearings x2, reverse gear idler shaft bearings x2, and additional bearings across main and auxiliary sections
Gears: countershaft gears x4, main drive gear x1, auxiliary gear x1
Synchronizers: low-splitter synchronizer assembly (A-7254) x1, aux-direct synchronizer assembly (A-7331) x1
Clutch Components: sliding clutch (20323) x1, sliding clutch (4306647) x1, clutch brake disc assembly (85541) x1, clutch release shaft bushings x4
Snap Rings and Retainers: multiple snap rings (14317, 14750, 16628, 16763, 16980, 4302070, 4303336) and snap ring retainer x1
Valve and Air Components: range slave valve assembly (A-5000), air filter/regulator assembly (A-4740), air hose assemblies x3, 90-degree elbows x3, connectors and collets
Seals and Gaskets: gasket kit (K-2061), o-ring kit (K-1450), oil seal with slinger (K-2262), o-rings x2
Input Shaft: input shaft assembly (S-1659) x1
Hardware: shim kit (K-2805), magnetic drain plugs, magnetic discs x3, front bearing cover x1, yoke for 3rd and 4th x1, mainshaft key x1, actuator pivot pin x1, hex flange nut x1, hose strap bracket and triple hose clamps, sealant x1
Instruction letter (L-2013-02) included
