At Winchester Gears we are proud to offer our. Fully rebuilt and restored, Genuine/OEM R380 Gearboxes.
Our rebuilds begin with a full component strip down.
Casing are blasted and cleaned.
The cast gear housing and the sandwich plate is coated in smooth gloss black.
The rear aluminium housing is left bare.
The full OEM parts list that is replaced as standard on every rebuild is:
Pinion taper bearing
Main shaft taper bearings
Layshaft taper bearings
Main shaft Rear support block roller bearing
Layshaft rear support block roller bearing
1st gear needle roller bearing
2nd gear needle roller bearing
3rd gear needle roller bearing
5th gear needle roller bearing
Reverse needle roller bearing
1st Gear 3 parts syncro rings
2nd Gear 3 parts syncro rings
3rd Gear 3 parts syncro rings
4th Gear syncro ring
5th Gear syncro ring
Reverse Gear syncro ring
1st & 2nd shift plates
3nd & 4th shift plates
5th & Reverse shift plates
X6 Gear hub clips
Main shaft circlip
Mainshaft locking coaler
Oil gallery ORings
All gears, shafts, selectors and other components are examined and checked for wear and fatigue.
Any parts replaces are Genuine,OEM or G rated ONLY.
All original bolts are used. Drain & Filler plugs are cleaned and zinc coated.
The R380 is Assembled to factory clearances and torque settings. The main shaft and layshaft are shimmed to preload. We seal the casings with a polyurethane adhesive and sealant.