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OMC intermediate housing press on ball gear

How to install press on ball gear, shaft and retainer
Drive train engine hub for Ford and Chevy engine

  • Outdrive years 1968 to 1972
  • There is no OEM number for just intermediate shaft only. Press on ball gear was sold with shafts only from OMC for year listed above
  • Intermediate ball gear and shaft require

OMC intermediate housing press on ball gear
OMC intermediate housing press on ball gear

Press on removal process required if changing drive shaft with worn spline

on shaft
on shaft

Clamp drive shaft with broken or worn spline in vice

Drill hole in plug and pry out
Drill hole in plug and pry out

Drill 5/16 hole in plug. Note no big deal if you drive a small amount into drive shaft.

You can reuse

You can reuse

Pull plug out with seal puller or screw driver

Plug out view of intermediate housing shaft

Plug out view of intermediate housing shaft

Save plug and reuse with marine epoxy

press on ball gears

Press on

Save plug and reuse with marine epoxy

Press on shaft omc 0979972
Press on shaft omc 0979972

Press on shaft OMC OEM number is 0979972 for this 1972 shaft. There are at least 8 different shaft sizes for 1971 to 1973 try to locate OEM number in middle of the shaft.

Clamp bearing remover on old unit
Clamp bearing remover on old unit

Press on removal will require bearing carrier puller to be placed in front of bearing retainer before removing shaft.

press on ball gears
press on
 
press out old shaft
press out old shaft

Unit needs to be supported well in press as it can take up 1,700 lbs to remove drive shaft spline from ball gear.

press out old shaft picture

press out old shaft picture

It is common for the tool to break as I try to remove old shaft with a worn or twisted spline.

Removed gear
Removed

Note older red loctite that was use as retainer compound 40 plus years ago.

Removed shaft
Removed shaft
 
Old
Old

This shaft has only one tapper bearing located on it.

1972 with tapper bearing
1972 with tapper bearing

This 1972 shaft has two back to back tapper bearings located on it with two outside races. Requires shimming and 4 to 8 inch pounds of preload.

Shaft 1972
Shaft 1972
 
Different drive shaft lengths
Different drive shaft lengths
 
Tapper bearing on shaft with gear removed
Tapper bearing on shaft
 
Tapper bearing and race on shaft with gear removed
Tapper bearing and race on shaft
 
979738 shaft

979738 shaft

 
Bearing retainer seal come out only one way that is pushing down
Bearing retainer seal come out only one way that is pushing down

Seals can only be pressed on of retainer one way . Look at retainer close to see larger side for seal to exit, i say this as retainer not easy to replace as its 40 plus years old now. If the replacement seal area has play don't worry about it use 680 Loctite on seal and retainer 24 ahead of time to take up the gap. Note some retainers have ridge in center of seal area.

Press on ball gear and retainer
Press on ball gear and retainer
 
Unit with shaft removed
Unit with shaft removed
 
Stringer

Stringer

This is not, a press on ball gear unit has tapper area and bolts on the threaded drive shaft. Unit fits 1972 to 1985 outdrive upper case.

OMC upper gearcase press on gear

OMC upper gearcase press on gear

814579
Stringer

Press on ball gears should have 609 or 680 loctite placed on spline area before installing shaft. Years 1969 to 1971.
*Please note some 1972 boats may have the year previous drive train installed in it.

T.C-30
T.C-30
T.C-30-2.
T.C-30-2.

This is a used unit for sale with shaft $250.00

T.C-26-2
T.C-26-2
T.C-2
T.C-2

Used press on ball gear with some wear please see lower picture. Sold with out shaft $100.00
Note upper picture is the same ball gear but we sold shaft.

86370 Oil seal 1964-1971

86370 Oil seal 1964-1971

 
water cage

water cage

 
4 screw unit

4 screw unit

908066

908066

816490 retainer

816490 retainer

316490 without fittings

316490 without fittings

310472 fitting

310472 fitting

 
4 hole shim

4 hole shim

3 bolt type

3 bolt type

 
2 bearings roller and ball

2 bearings roller and ball

 
Hub 3

Hub 3

Chevy Ford hubs

Chevy Ford hubs

hub 2

hub 2