1964 Evinrude lower unit

[665543]

1964 Evinrude electric shift was seized in gear.
Took apart lower unit unseized shaft and springs for gears.
Question: When lower unit assembly is attached to driveshaft/water pump unit. System jams> Cannot turn shaft manually.
If I loosen nuts on studs and drop lower unit 1/8 inch. All shafts turns freely.
Any ideals don't want to take unit apart again.

 

[OBJ]

Re: 1964 Evinrude lower unit

When you say "seized", in what way seized? Rust, something came lose?

If it jams when put back together, might be the pinion gear is not seating in correctly.....but that right now is just a guess untill we know a little more. What kind of shape are the bearings and gears in?

I also deleted your first post on the subject since is was a duplicate.

 

[itstippy]

Re: 1964 Evinrude lower unit

Congrats on disassembling/reassembling a 1964 Selectric lower. Wowie. Have a beer, guy!
It sounds like the pinion gear is not meshing with the forward and/or reverse gears properly and is jamming one or both gear hub & bearing assemblys HARD into the prop shaft. How far did you have this thing apart?

 

[665543]

Re: 1964 Evinrude lower unit

When you say "seized", in what way seized? Rust, something came lose?

If it jams when put back together, might be the pinion gear is not seating in correctly.....but that right now is just a guess untill we know a little more. What kind of shape are the bearings and gears in?

I also deleted your first post on the subject since is was a duplicate.

 

[665543]

Re: 1964 Evinrude lower unit

Pinion gear not meshing could be a possibility. It appeared to be OK before I put it back on. Bearing and gears are in good shape. By seized I means reverse gear coil or spring was stucked to shaft would not disengage.
Maybe shaft is not fitting pinion correctly.

If some ones got to be on banks of muddy Ohio.
I 'm glad its you too cold and overcast

 

[665543]

Re: 1964 Evinrude lower unit

Congrats on disassembling/reassembling a 1964 Selectric lower. Wowie. Have a beer, guy!
It sounds like the pinion gear is not meshing with the forward and/or reverse gears properly and is jamming one or both gear hub & bearing assemblys HARD into the prop shaft. How far did you have this thing apart?

 

[665543]

Re: 1964 Evinrude lower unit

I was having a beer while tearing it apart and putting it back togather. May be that was the problem.
Question is should I be able to turn shaft freely when I put it togather. Default should be in neutral right.

Never been to WI
Too cold women have too much beef on them.

 

[F_R]

Re: 1964 Evinrude lower unit

Did you have the pinion bearings out? One pinion thrust washer is larger than the other one, Also the reverse gear thrust washer goes between the reverse gear and gearcase head, is that where you have it? Did you have the Timken bearing out and is it seated all the way down in the housing? Did you have the forward coil out and is it seated? Something is holding the gears too close together. It should turn very freely, even a hair of slop (backlash) in the gears.

 

[Saskatoon2005]

Re: 1964 Evinrude lower unit

Do you have a split housing? probably not, and that makes things quite difficult. Let me know...I can email you disassembly/reassembly instructions, but you must have those already right?

 

[665543]

Re: 1964 Evinrude lower unit

Do you have a split housing? probably not, and that makes things quite difficult. Let me know...I can email you disassembly/reassembly instructions, but you must have those already right?

 

[665543]

Re: 1964 Evinrude lower unit

Do you have a split housing? probably not, and that makes things quite difficult. Let me know...I can email you disassembly/reassembly instructions, but you must have those already right?

 

[Saskatoon2005]

Re: 1964 Evinrude lower unit

You haven't answered my question...Do you have a split lower housing. The housing surrounding the propshaft and gears is split down the middle so when you take out the screws and invert (turn over) the lower end, you are looking right at the forward reverse etc gears all in a line. does that make sense?

 

[665543]

Re: 1964 Evinrude lower unit

I don't have a split housing. Pinion gear is meshing with gears correctly. When I attach lower unit the bearing housing (raise) appears to be pushing down on top of pinion gear washer and causing gears to bind or stick.
When I back off about 1/8 in shaft turns freely in neutral.
My thought is to install a 1/8 to 1/4" gasket of rubber material between lower unit and upper drive shaft (water pump housing) assembly.
I have tried to knock bearing housing raise back so it does not push down on pinion gear. But it does not appear to move. Cannot understand why raise is pushing down on gears.


Thanks

 

[ezeke]

Re: 1964 Evinrude lower unit

Is there something caught above the driveshaft?

 

[Saskatoon2005]

Re: 1964 Evinrude lower unit

Dissassembly:

Refer to FIGURE 48 (typical) for this procedure. (I will show it a.s.a.p)
1. Remove gearcase
2. Secure gearcase in a vise with protective jaws.
3. Remove and discard the drive shaft O-ring.
4. Remove the water pump...(if you need those directions let me know)

Note: The drive shaft on units equipped with a bearing cap is removed with the cap as an assembly. On units with a thrust plate, the drive shaft is removed at a later point in the procedure.

5. Remove the screws holding the thrust plate or bearing cap to the gearcase. Remove the thrust plate and bearing assembly or bearing cap and drive shaft assembly from the gearcase.
6. Slide the bearing cap off the drive shaft. Remove the bearing cap seals (A, FIGURE 46) with a suitable punch. If bearing cap bearing (B, FIGURE 46) requires replacement, remove from cap with arbour press.
7. Remove and discard the self-locking gearcase stud nuts. Remove the stud washers and shift cable retainer. See. FIGURE 49 (typical)
8. Carefully separate the upper and lower gearcase assembliesenough to slide shift cable insulating sleeve back and disconnect the coil lead terminals. Remove uppergearcase assembly and pilot ring (if used).

 

[Saskatoon2005]

Re: 1964 Evinrude lower unit

9. Remove the shift cable terminal retainer screw and washer (FIGURE 50), then remove the nylon coil lead retainer from the gearcase.
10. Remove the gearcase head/bearing housing screws with a thin-wall deep socket. Discard the O-rings on the screws, if used.
11. Install flywheel puller part No. 378103 and two puller bolts (part No. 309489) in gearcase head/ bearing housing screw holes. Tighten puller nut until the head/housing comes loose.
12. Carefully remove the reverse coil snap ring with snap ring pliers. Feed the blue coil wire down through the gearcase opening.
13. Thread 2 gearcase head screws into the reverse coil and gently rock it out of the gearcase housing. See Figure 51.
14. Remove the propeller shaft with the reverse gear and hub assembly. If equipped with an oil pump, make sure the cam lobe on the shaft clears the pump plunger.
15. Remove the oil pump plunger, spring and body assembly from the gearcase bore, if so equipped.

 

[Saskatoon2005]

Re: 1964 Evinrude lower unit

16. On units with a drive shaft thrust plate, insert a suitable wrench to hold the pinion nut. Pad the side of the gearcase to prevent housing damage. Install a suitable drive shaft holding socket and rotate the drive shaft counterclockwise to loosen the pinion nut. See Figure 52. Once the pinion nut is removed, remove the drive shaft.
17. Tip the pinion gear toward the rear of the housing and remove it, then invert the housing and catch the forward gear/clutch hub/spring assembly as it drops out.

Note: After the forward coil comes loose in Step 18, make sure the coil lead is free and that its terminal connector does not become stuck in the gearcase passageway.

18. If forward coil or bearing are to be removed, remove the Philips head screw holding the metal lead guard in the gearcase and remove the guard, if so equipped. Remove forward coil with a suitable puller.
19. Check front bearing race (lower gearcase) and upper/lower drive shaft bearings (upper gearcase). Use an appropriate bearing /race puller to remove them ONLY if worn, damaged or bearing replacement is necessary. If a suitable bearing race puller is not available, heat the lower gearcase nose and tap it with a plastic or rawhide mallet. This will generally free the racefor removal. There are no shims behind it.

 

[itstippy]

Re: 1964 Evinrude lower unit

Now we're into it! Not-so-great memories. Golly I hate working on those breech-loading nightmares.
CO Donegal -
You say the propshaft spins freely and the pinion gear meshes with both forward & reverse gears properly when the lower is 1/8" from seated, but when you seat fully the jamming happens. Odd. I'm with F_R - something is holding the gears too close together. That's forcing the pinion gear to ride too high. Let's do a functionality test,for fun, before proceding any further though.
Use a jumper cable to hook negative 12V to the lower unit housing and positive 12V to one of the wires. Tape off the other wire so it doesn't short anything. Does the lower unit engage? Now apply the 12V positive to the other wire (after taping up the first one). Does the lower unit engage again? I mean ENGAGE - no slip. If this don't happen then you're wasting your time.
http://forums.iboats.com/bbBoard.cgi?a=viewthread;fid=28;gtid=1111496;gpid=1115852#gpid1115852

 

[James R]

Re: 1964 Evinrude lower unit

I noticed you questioned the default position. To my knowledge, which is not very great, the electric shift lower units shift into forward gear when the motor is turned off and the hydraulic pump is no longer running and will only shift back to neutral when the motor is fired up again. Hope this helps.

 

[itstippy]

Re: 1964 Evinrude lower unit

The forward gear default is only true of the later "hydroelectric" shift models. These earlier "electric" shift models use electromagnetic coils and springs that grab the propshaft to shift gears. No hydraulic pump; no solenoids. Default is neutral. 12V positive to one wire engages forward. 12V positive to the other wire engages reverse. 12V positive to both wires at the same time engages forward and reverse simultaneously, blowing the crop out of the gearcase if the motor is running. It is not uncommon for people to replace an electric shift controller with a hydro-electric shift controller and blow the lower unit. Both controllers say "Selelectric" (Evinrude) or "Electramatic (Johnson). Gotta keep 'em straight. Of course, with the earlier electric shifts a dead battery means neutral default and no way to engage the gears. You float helplessly in neutral. Gotta love the design! I have two.