centerline
Seaman
- Joined
- Sep 8, 2008
- Messages
- 57
Im looking for the part number for the gear set, or a set of gears....
I have an old sterndrive unit with bad upper gears... the serial number on the tag is not legible and I dont know any other way to identify what unit it is, but it is one of the models before the alpha was introduced.... (it has the little lifting eye built into upper gearcase cover)
I have the gears out of it on the bench....
so I bought used unit that looked identical to get the gears out of, which are in great condition, but what I find out is that the lower unit drive shaft that sticks up in to the upper unit is an 8 spline on mine, but a 13 spline on the donor unit.... so the gears are not compatible....
they ARE the same ratio (1.98 for 4cyl engine) but the gear length (the skirt? that has the splines inside of it) is an inch longer on mine than on the donor gear...
the lower unit input shaft is an inch shorter on my lower unit than the donor unit...
also, the small upper bearing (that rests in the upper unit cover) is pressed on the gearshaft in the donor unit, but my unit has a retainer nut holding it on the shaft.. the upper part of the gearshaft appears to be the same length (except for the additional length for the nut holding the bearing on)
so I need a gear set 20-24 tooth with the shorter 24T gear.... does anyone have a part number for the gearset I need? (I can find no reference to the gear sets being different in these early units, other than the ratios)
if it helps any, the first four numbers on my unit are are 2649???
and the ser# on the donor unit is 3132461, but it has the wrong style of gears... thanks for any help you can give.
I have an old sterndrive unit with bad upper gears... the serial number on the tag is not legible and I dont know any other way to identify what unit it is, but it is one of the models before the alpha was introduced.... (it has the little lifting eye built into upper gearcase cover)
I have the gears out of it on the bench....
so I bought used unit that looked identical to get the gears out of, which are in great condition, but what I find out is that the lower unit drive shaft that sticks up in to the upper unit is an 8 spline on mine, but a 13 spline on the donor unit.... so the gears are not compatible....
they ARE the same ratio (1.98 for 4cyl engine) but the gear length (the skirt? that has the splines inside of it) is an inch longer on mine than on the donor gear...
the lower unit input shaft is an inch shorter on my lower unit than the donor unit...
also, the small upper bearing (that rests in the upper unit cover) is pressed on the gearshaft in the donor unit, but my unit has a retainer nut holding it on the shaft.. the upper part of the gearshaft appears to be the same length (except for the additional length for the nut holding the bearing on)
so I need a gear set 20-24 tooth with the shorter 24T gear.... does anyone have a part number for the gearset I need? (I can find no reference to the gear sets being different in these early units, other than the ratios)
if it helps any, the first four numbers on my unit are are 2649???
and the ser# on the donor unit is 3132461, but it has the wrong style of gears... thanks for any help you can give.
