The Eaton Fuller K-3748 or K3748 is a Master Rebuilder Kit covering a comprehensive overhaul of compatible Eaton Fuller transmissions. The kit includes main case countershaft bearings (front and rear), reverse gear idler shaft bearings, a tapered roller bearing, multiple ball and roller bearings, a main drive gear, sliding clutch, synchronizer assemblies for low-split and auxiliary direct, a range slave valve assembly, splitter cover assembly, air hose assemblies, a filter and regulator assembly, snap rings, O-rings, a gasket kit, an O-ring kit, a sleeve kit, a shim kit, seals, sealant, silicone lubricant, and an instruction letter. Call us to confirm proper fit for your application.
Main Case Countershaft Bearings - Front: part 4308397, qty 2
Main Case Countershaft Bearings - Rear: part 4308398, qty 2
Reverse Gear Idler Shaft Bearings: part 4308403, qty 2
Tapered Roller Bearing: part 4300902-BOX, qty 1
Ball Bearing: part 81504, qty 1
Main Drive Gear: part 4304510, qty 1
Sliding Clutch: part 4306647, qty 1
Synchronizer Assembly, Low-Split: part A-7254, qty 1
Synchronizer Assembly, Aux Direct: part A-7331, qty 1
Range Slave Valve Assembly: part A-5000, qty 1
Splitter Cover Assembly: part A-6863, qty 1
Filter/Regulator Assembly, Air: part A-4740, qty 1
Retainer Assembly: part A-8030, qty 1
Input Shaft Assembly: part S-1659, qty 1
Gasket Kit: part K-3288, qty 1
O-Ring Kit: part K-3341, qty 1
Sleeve Kit: part K-1969, qty 1
Shim Kit: part K-2805, qty 1
Actuator Pin Kit: part K-3104, qty 1
Hex Flange Crimped Nut Kit: part K-4122, qty 1
Oil Seal Kit, Electric Cover: part K-2918, qty 1
Air Hose Assemblies: parts 55509, 55527, 55528 (qty varies)
Clutch Release Shaft Bushings: part 12815, qty 4
Disc Assembly, Clutch Brake: part 85541, qty 1
Sealant: part 71205, qty 1
Silicone Lubricant: part 71206, qty 1
Instruction Letter: part L-2013-05, qty 1
Features
Complete master rebuilder kit for compatible Eaton Fuller transmissions
Includes main case countershaft bearings (front and rear) and reverse gear idler shaft bearings
Synchronizer assemblies included: low-split (A-7254) and auxiliary direct (A-7331)
Range slave valve assembly (A-5000) and air filter/regulator assembly (A-4740) included
Gasket kit (K-3288), O-ring kit (K-3341), sleeve kit (K-1969), and shim kit (K-2805) included
Sealant and silicone lubricant included alongside a factory instruction letter
Additional Information
Kit K-3748 Bill of Materials (selected major components):Main Case Countershaft Bearings - Front: part 4308397, qty 2
Main Case Countershaft Bearings - Rear: part 4308398, qty 2
Reverse Gear Idler Shaft Bearings: part 4308403, qty 2
Tapered Roller Bearing: part 4300902-BOX, qty 1
Ball Bearing: part 81504, qty 1
Main Drive Gear: part 4304510, qty 1
Sliding Clutch: part 4306647, qty 1
Synchronizer Assembly, Low-Split: part A-7254, qty 1
Synchronizer Assembly, Aux Direct: part A-7331, qty 1
Range Slave Valve Assembly: part A-5000, qty 1
Splitter Cover Assembly: part A-6863, qty 1
Filter/Regulator Assembly, Air: part A-4740, qty 1
Retainer Assembly: part A-8030, qty 1
Input Shaft Assembly: part S-1659, qty 1
Gasket Kit: part K-3288, qty 1
O-Ring Kit: part K-3341, qty 1
Sleeve Kit: part K-1969, qty 1
Shim Kit: part K-2805, qty 1
Actuator Pin Kit: part K-3104, qty 1
Hex Flange Crimped Nut Kit: part K-4122, qty 1
Oil Seal Kit, Electric Cover: part K-2918, qty 1
Air Hose Assemblies: parts 55509, 55527, 55528 (qty varies)
Clutch Release Shaft Bushings: part 12815, qty 4
Disc Assembly, Clutch Brake: part 85541, qty 1
Sealant: part 71205, qty 1
Silicone Lubricant: part 71206, qty 1
Instruction Letter: part L-2013-05, qty 1
