Hydro Electric Slipping

StringBox

Seaman Apprentice
Joined
Jul 3, 2002
Messages
35
I have a 1971 Johnson 60 hp Hydro Electric motor.<br />I've finally got the motor running well, but under<br />load the motor seams to slip out of gear. The motor shifts fine to forward, neutral reverse, but when powered up, it seems that the unit slips in<br />and out of gear. <br />The lower unit was one of the first things checked out and has been completely taken apart and reassembled with new bearings and seals. All the gears looked good, not metal shavings or worn gears.<br />After a short run I changed the lower unit oil just as a precaution after having it apart. The oil was a bit dirty, but there were no shavings or grit in the oil after running. I am running the recommended lower unit lube for a hydro electric drive.<br /><br />I have seen a couple of other posts with similiar problems, but most are having trouble getting into neutral or reverse. I have no trouble shifting.<br />I am using an old stainless prop, and have heard of problems under load with the props spinning free.<br />Does anyone have a suggestion as to what might fix my problem.<br />Thanks<br />stringbox@technologystore.com
 

jimtodd72

Seaman
Joined
Jan 30, 2002
Messages
51
Re: Hydro Electric Slipping

Is the motor slipping in and out of gear in forward or reverse? Also, how long is it staying out of gear before jumping back on? If it is only momentary, it could be that the powerhead is missing on one cylinder at high throttle and not have anything to do with the gearcase.<br /><br />Jim
 

steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: Hydro Electric Slipping

Sounds like a spun nub.<br />Remove the prop put a water proof mark across<br />the hub and prop. drive the boat and check the mark .If it doesnt line up its a spun prop.
 

StringBox

Seaman Apprentice
Joined
Jul 3, 2002
Messages
35
Re: Hydro Electric Slipping

And the verdict .... a spun prop<br /><br />Thanks for the help guys
 
Top