OMC 400/800 rebuilt ball gear shaft parts with video
Rebuild your intermediate housing ball gear shaft
Last updated on 11/28/2023
- Basic OMC 400/800 Stringer intermediate ball gear repair $246.00 *You’ll need to send us your drive shaft for this repair job*
- Includes all labor (see below), disassembly, inspecting and cleaning/refurbishing parts. A new ball gear, plug, o ring, retainer seals and nut then installed in the re-assembly of the unit.
- If any additional bearings or a new unit is required, the replacement parts are added on top of the basic repair cost.
- Please contact us if you will be sending your parts in to have the ball gear replaced.
Repair step photos listed below
Old ball gear is removed, follow by retainer. The back to back oil seals are then removed.
Any pitting is filled in
The inside area of the retainer is polished
Loctite retaining compound is added to the inside the of the retainer to ensure the oil seal is seated correctly
Oil seals are installed back to back
P/N 379628-U Used electric wire OEM-379628 $199.89
2 coats of zinc chromate primer are used
The section where the old oil seals were installed is cleaned and polished
The tapered area of the shaft before the threaded end is polished
Threaded area is cleaned with a wire brush to ensure lock nut will thread on smoothly
Ball gear is installed into retainer
Loctite 248 thread lock is installed onto the threads before the lock nut is installed
Nut is torqued to correct specs
Loctite 515 on nut area
Flange sealant (Loctite 515) is used to prepare for cap installation
Place plug and turn to seal
Cap is installed onto ball gear, which covers and protects the locknut
Press in plug.
Remove 515 Loctite on plug
Lacquer two coats on plug
Add gasket compound to o-ring both sides
Pack and ship FedEx
This is a New OMC Stringer Intermediate Drive Shaft The OEM part number is 909044 or 9090440
Drive shaft has 20 splines on the engine or hub side and 23 on the ball gear end.
Shaft is 13 1/4 inches long and will require a nut to hold ball gear on.
Years 1976 to 1977
Hp. 120, 140, 165, 175, 190, 225 and 235
4 cylinder, V-6 and V-8 engines