Lucky Day

DeepCMark58A

Commander
Joined
Aug 17, 2015
Messages
2,355
Tilt and trim was not working on the go fast, this was problematic for the skier due to wake size and trimming properly. (don't bother I did not bring up hull displacement and wake size) I pulled the boat and got motor wedged up, relays were working I looked at the trim motor and said well that looks like a PITA to get out, not today. In a futile effort I tapped the trim motor with a hammer a few times, hit the controls bingo working tilt and trim, I didn't even get my hands dirty. A nice Sunday surprise.
 

JimS123

Fleet Admiral
Joined
Jul 27, 2007
Messages
8,163
An old "engineer" that I worked under always used the phrase: "If it won't work right, get a bigger hammer".

He also was big on adding new machinery on the line. If a post was in the way, he would cut a foot section out of it. measure the hole, and if the roof didn't sag more than 1/4" by the next morning he would instruct the welder to cut the sucker out. Those pesky structural engineers didn't know crap anyway. Much more steel than we really need.
 

airshot

Vice Admiral
Joined
Jul 22, 2008
Messages
5,084
Tilt and trim was not working on the go fast, this was problematic for the skier due to wake size and trimming properly. (don't bother I did not bring up hull displacement and wake size) I pulled the boat and got motor wedged up, relays were working I looked at the trim motor and said well that looks like a PITA to get out, not today. In a futile effort I tapped the trim motor with a hammer a few times, hit the controls bingo working tilt and trim, I didn't even get my hands dirty. A nice Sunday surprise.
If duct tape won't fix it, you need a hammer !
 

ratdude747

Petty Officer 1st Class
Joined
Sep 30, 2023
Messages
221
Hey it worked one time on the starter of my 1963 Rambler too.
Or any brushed DC motor.

Often the commutator gets a bad spot, and if the motor stops with such on one of the brushes, the motor won't turn. Hitting with a hammer jars the rotor enough that both brushes are on good parts of the commutator, allowing the motor to start. If a motor needs tapped and no loose connections are found, it needs replaced ASAP as it'll eventually get bad enough that momentum won't carry the rotor past the bad spot when running.
 

DeepCMark58A

Commander
Joined
Aug 17, 2015
Messages
2,355
Or any brushed DC motor.

Often the commutator gets a bad spot, and if the motor stops with such on one of the brushes, the motor won't turn. Hitting with a hammer jars the rotor enough that both brushes are on good parts of the commutator, allowing the motor to start. If a motor needs tapped and no loose connections are found, it needs replaced ASAP as it'll eventually get bad enough that momentum won't carry the rotor past the bad spot when running.
I am aware of that, that is why I tried the tapping.
 

airshot

Vice Admiral
Joined
Jul 22, 2008
Messages
5,084
Way back in my much younger days while driving clunker cars, I always carried a hammer and a roll of duct tape ! Used them often !
 

jlh3rd

Chief Petty Officer
Joined
Jul 10, 2017
Messages
560
According to a service manual on a Garrett AIResearch 331-6 turboprop engine used on the MU-2:
If no light off on an initial start attempt, open access panels at the engine and "malletize" the fuel control unit.
 

DeepCMark58A

Commander
Joined
Aug 17, 2015
Messages
2,355
I did order a new motor today, the down motion sounds bad. Wish me luck going to try to replace with the whole motor on the boat because I have no alternative.
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
27,851
Unfortunately, PTT motors do fail. Here on the salt pond, they can rust thru the outer casing. At least that is what happened to my Merc PTT motor (likely made by ARCO), and the boat lived on a lift. My Johnnyrude OEM PTT motor from '98 is just fine, and that lives in the water 7 mos. a year. Go figure....
 
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