The Eaton Fuller K-3746 or K3746 Master Rebuild Kit is a comprehensive overhaul kit covering both the main case and auxiliary sections of compatible Eaton Fuller transmissions. The kit includes main case countershaft bearings (front and rear), reverse gear idler shaft bearings, a tapered roller bearing, ball bearing, and multiple additional bearings. Gearing components include the main drive gear, two additional gear pairs (part numbers 4303666 and 4304060), a sliding clutch, and a 3rd-and-4th yoke. The kit also covers air system components: two air hose assemblies, a range slave valve assembly, splitter cover assembly, air filter/regulator assembly, and triple hose clamps. Sealing hardware includes the gasket kit K-3288, O-ring kit K-3341, oil seal kit K-2918, and a front bearing cover. Sub-kits include a sleeve kit K-1969, shim kit K-2805, actuator pin kit K-3104, and hex flange crimped nut kit K-4122. An instruction letter is included. Call us to confirm proper fit for your specific transmission application.
What's in this kit (74 parts)
Features
Includes main case countershaft bearings (front and rear, x2 each) and reverse gear idler shaft bearings (x2)
Covers air system components: range slave valve assembly (A-5000), filter/regulator assembly (A-4740), splitter cover assembly (A-6863), and pre-formed air hose assemblies
Synchronizer assemblies included: low-speed synchronizer (A-7254) and auxiliary direct synchronizer (A-7331)
Full sealing complement: gasket kit K-3288, O-ring kit K-3341, oil seal kit K-2918, plus multiple individual O-rings
Sub-kits cover sleeves (K-1969), shims (K-2805), actuator pins (K-3104), and hex flange crimped nuts (K-4122)
Includes sealant and silicone lubricant, plus an instruction letter for assembly reference
Used in these Eaton Fuller models
