Need help reinstalling lower unit on older 35 HP Merc

[petryss]

I'm trying not to get frustrated guys. I removed and replaced my old water pump impeller aligned the copper water tub and tried to reinstall the LU but something has it hung and I can't get it to go that last 1-1/2" I had it on earlier but had no reverse so I knew I did something wrong. Any help is appreciated.

 

[carholme]

Re: Need help reinstalling lower unit on older 35 HP Merc

You say older Merc? What is the s/n?

The boat and the LU must be in the same gear when installing. 1-1/2" sounds like the driveshaft splines. When you have it up as far as it will go, reach up and turn the flywheel to line up the driveshaft splines.

Gerry

 

[petryss]

Re: Need help reinstalling lower unit on older 35 HP Merc

Serial Number OA997869, model SKU 1035716, no idea the year!

Thanks for responding Gerry, I followed the instructions of "Moody Blue" and I was able to get the LU back on but now I have 2 more problems.

1: No forward or reverse

2: Still no pee. IThis all started when I dropped the LU and replaced the impeller. I went back to make sure the impeller was installed correctly and followed these instructions.

"Keep lower unit and control in neutral.

Push the lower unit up into the midsection and align the cooling water tube into the waterpump. Push further till the driveshaft encounters the crankshaft in the powerhead. Apply just a little upwards pressure on the lower unit while a helper rotates the flywheel by hand (be sure the key is OFF and kill switch engaged). The splines of the crankshaft and driveshaft will align and slide together.

Next obstacle will be the shift shaft. You may need to get your fingers or pair of needle nose pliers in there to align the upper and lower shift shafts. The upper and lower do not always line up on-center even though the splines are aligned. Again, apply a little upwards force at the same time. The lower unit should then slid up to within about 1/2" of being fully seated.

The last hurtle will be the exhaust tube seal. A little vaseline on the inside of the seal and around the outside lip of the exhaust tube will ease assembly. A little upwards thrust should seat the exhaust tube into the seal and the lower unit will be in place".

The rest is history, No turning prop and no pee.