very frustrated

[redfish728]

I have a 1993 70 hp evinrude. I am going to install a new water pump. I have removed all the bolts on the lower unit, and removed the retaining pin from the shifter lever. But, I cannot remove the lower uit. I have removed it in the past, and I know I am missing something simple. Any advice or suggestions?

Thanks

 

[billy4hp]

Re: very frustrated

Did you remember to remove the bolt from under the trim tab (You have to remove the trim tab in order to get to it)?

Other than that there isn't much to hold it up...

Good luck,

Billy

 

[EN2]

Re: very frustrated

Did you push the shift lever to the port side? Doing so will release the shift rod.

 

[Classic Ski-Boat]

Re: very frustrated

Hi, I am having the same problem with the lower unit on 1966 Johnson 40HP ... I am working on it as we speak ... is it possible that the drive shaft is stuck in the powerhead? How can you release it? Thanks

 

[tashasdaddy]

Re: very frustrated

yes, it is possible, if the last person did not grease the splines, did not put o-ring on the upper end of the drive shaft, it could be rusted together.

take the spark plugs out, and turn the flywheel. i have hung motors upside down, because the power head is heavier, and soaked thru the space between mid and lower with PB blaster.

 

[billy4hp]

Re: very frustrated

Hi, I am having the same problem with the lower unit on 1966 Johnson 40HP ... I am working on it as we speak ... is it possible that the drive shaft is stuck in the powerhead? How can you release it? Thanks

Yes it is possible to have the driveshaft stuck in the power head, but it's not always nice to hijack someone's thread...

 

[redfish728]

Re: very frustrated

I know I have removed all the bolts. The shift lever in on the right side of the power head. I removed the retaing pin, and the lever moves front and back, and in and out. How should I position the lever? Also, does the engin need to be in gear or neutral?
If the lower unit is stuck, should I try and tap it off or wedge it open.
I just do not want to force anything.

thanks for all the help, and I am determined to get this done on my own!!

 

[EN2]

Re: very frustrated

Can you see where the shift lever disconects from the shift rod? Maybe by removing the starter and removing the lower carb you can see things better. Also is this a salt water motor? Drive shaft splines could be stuck in the crankshaft. If when pulling the hitch pin, as I call it push the shift lever to the port side, the shift rod will release.

 

[trendsetter240]

Re: very frustrated

I know I have removed all the bolts. The shift lever in on the right side of the power head. I removed the retaing pin, and the lever moves front and back, and in and out. How should I position the lever? Also, does the engin need to be in gear or neutral?
If the lower unit is stuck, should I try and tap it off or wedge it open.
I just do not want to force anything.

thanks for all the help, and I am determined to get this done on my own!!

Does the lower leg seperate at all or is it holding fast with no gap?

Doesn't matter if it's in gear or neutral. What model number do you have? In order to disengage the shift rod you need to push the shift lever in towards the powerhead. When you push the shift lever in a clamp opens up and releases the shift rod from the shift lever.

BTW you have 2 bolts under the trim tab that need to be removed. One countersunk bolt with a lockwasher and one bolt up inside the trim tab cavity. A total of 6 bolts to remove the foot plus the one holding on the trim tab.

 

[Elbo]

Re: very frustrated

When I get one like that I use a rubber hammer to knock it loose.

 

[ezeke]

Re: very frustrated

I know I have removed all the bolts. The shift lever in on the right side of the power head. I removed the retaing pin, and the lever moves front and back, and in and out. How should I position the lever? Also, does the engin need to be in gear or neutral?
If the lower unit is stuck, should I try and tap it off or wedge it open.
I just do not want to force anything.

thanks for all the help, and I am determined to get this done on my own!!

You remove the clip from the starboard side, then push the lever towards the port side until you can see that the shift rod is released.

 

[kenmyfam]

Re: very frustrated

Does the lower leg seperate at all or is it holding fast with no gap?

Excellent question.

 

[redfish728]

Re: very frustrated

Well, I dedided to double check, and I did forget one bolt! I removed it, and the lower unit came off like I knew what I was doing.
Now I move on to the water pump. My first issue is that the old impeller seems to be stuck very tightly to the shaft. I do not want to force anything. Any suggestions.

Thank you every one for all you help and advice!!

 

[ezeke]

Re: very frustrated

Try to hold the driveshaft steady while turning the impeller clockwise.

If the metal base of the impeller has bonded with the steel of the drive shaft it may be necessary to cut the impeller base behind the key and split it to remove it. A dremel and small cold chisel can do this in a few minutes.

When you replace the impeller, a little Triple Guard Grease on the driveshaft will make it easier the next time.

 

[1946Zephyr]

Re: very frustrated

You can pry it off with a screw driver on each side, if you be careful and don't marr up the lower unit housing. Spray it down with WD-40 to help loosen things up.

 

[redfish728]

Re: very frustrated

thanxs for all the info. My next question. As I put the impeller on, there ia a small key that goes on the shaft. I have 2 of them with the kit. not sure which one to use, the blk or white. do i just stick it to the shaft or impetter with grease? it it very omportant.

any other info?

 

[billy4hp]

Re: very frustrated

thanxs for all the info. My next question. As I put the impeller on, there ia a small key that goes on the shaft. I have 2 of them with the kit. not sure which one to use, the blk or white. do i just stick it to the shaft or impetter with grease? it it very omportant.

any other info?

The key is the most important part of the whole water pump, no key (or the wrong key), no impeller movement, no pumpie that water....

Worst case is putting in the wrong key that works for a little while, then slides out causing the water pump to fail without warning...


You need to use the key that fits the best, both in the impeller and in the driveshaft. One is likely narrower or shallower... It should fit snug into the shaft and stick up enough to engage the impeller's slot...

A little vaseline works nicely to hold it into the shaft, or you can peen either side of the keyway slot in the shaft to hold it even tighter. Just go slow and easy... You might want to mock up both and see which fits the best... One might not fit at all... It's not like your trying to get this done at a pitstop pace...

Good luck...

 

[kenmyfam]

Re: very frustrated

or you can peen either side of the keyway slot in the shaft to hold it even tighter.

I would not recommend dinging up the shaft at all.
Just my thoughts though

 

[billy4hp]

Re: very frustrated

I would not recommend dinging up the shaft at all.
Just my thoughts though

Ah, I'm not talking about wacking it with a 3lb sledge , but I can see someone taking that bit of advice and ruining a perfectly good shaft....

I forget sometimes that I have been rebuilding mechanical things since I was 9 and am 39 now... I've tweaked (read that as ruined) many a good part myself over the years and have fortunately developed the touch of experience here in the last couple of weeks...

But in the engine building world, especially when using a roots type supercharger which put's great strain on keyway slots, peening a slot was a day to day operation... But we are talking about a much larger diameter shaft....

Point well taken...

 

[redfish728]

Re: very frustrated

well, I have gotten my water pump all back together (I think!). Now I need to reconnect everything. I am having a terrible time getting the shift rod reconnected to the shift lever. Any suggestions or words of wisdom??