"Patrick Nichols" (pnichols)
05/08/2018 at 23:46 • Filed to: None | 0 | 3 |
So I bartered my way into a coworkers 16 ft aluminum bass boat in exchange for some help painting their deck. Got it home and now to do the maintenance on it as it hasn’t been used much the last two years. So after watching a few youtube videos I feel pretty confident doing everything myself and here’s the breakdown:
Compression test and replacing the sparkplugs - done
Clean the fuel filter - done
Replace some of the upper decking - done
New tires for the trailer - picking them up with my truck tomorrow after some maintenance and inspection
Clean and re-grease tilt and steering joints - done
New impeller and anode - parts arrived and will be completing this week
Thermostat test and gasket - parts arrived and will be completing this week
Changing the gearbox oil - No idea what type of oil to use, please help!
New trailer lights and harness - done but trying to figure out where I have a grounding issue before soldering and heat-shrinking the connectors, any tips?
Flushing the gas tank - there isn’t much left in it, but any tips would be helpful
The motor is an ‘88 Johnson 28 hp and I can’t seem to find anywhere what type of gearbox oil to use. A lot of motors use ATF, but if anyone has any idea of where I should look it would be much appreciated.
jminer
> Patrick Nichols
05/09/2018 at 00:15 | 1 |
Most outboard motors use 80/90 wt gear oil in the transmission. Cheap as shit, and you buy it by the gallon.
ITA97, now with more Jag @ opposite-lock.com
> Patrick Nichols
05/09/2018 at 00:32 | 2 |
https://www.walmart.com/ip/Super-Tech-80W-90-Marine-Gear-Lube-8-fl-oz/16927998
That old Johnson probably uses a common outboard lower unit lube like above. Any auto parts store ought to have a generic marine lower unit lube in the gear oil section.
Sometimes boat trailer manufactures get lazy on the wiring and set them up to ground through the coupler and the tow vehicle’s ball. If the ball/ballmount/ inside of the coupler is rusty or too dirty, there won’t be a ground and lights will be no bueno.
A few other things to consider: lubing the prop shaft and repacking the wheel bearings on the trailer. Out on the water with a busted prop is a bad place to find out the existing prop is seized to the shaft. Wheel bearings are usually repacked every year, as the hubs get submerged on a regular basis. On boat trailers, you use marine grease in the hubs. It isn’t a superior lubricant (the other reason they’re repacked frequently), but it is supper tacky stuff that plays better with water than regular wheel bearing grease. That same grease would work for lubing the prop shaft, too.
Patrick Nichols
> ITA97, now with more Jag @ opposite-lock.com
05/09/2018 at 00:51 | 1 |
Thanks for the tips! So the gearbox lube should be an easy project. Funny enough, while I was testing the wiring I never actually mounted the trailer on my hitch, I’ll try that tomorrow then. And sounds like it will be easy enough to repack the bearings before I put the tires back on.