Gear box sealant

[chain]

Our Rhino brushcutter has devleoped a lower seal [gear box] leak. What, if any, may be a good temporary sealant until I have time for repair?

[Raider Bill]

I've used grease before in leaking gear boxes.

Never seemed to hurt

[Bro. Noble]

I don't know of any temporary sealent,  but you can pump grease in it with a grease gun and be good to go.  Seems like getting barbed wire wrapped around the blade shaft has caused me more seal fairure than anything else.

[Mark K]

EP gear grease will work also. I know new holland has it under there name. It is basically flowable grease, thicker then 85-140 but will flow. I use it in my John deere brush cutter. Put a little in every year and seems to be fine.

[John Woodworth]

If it's the gearbox drill and tap a zerk fitting and fill with grease and give it a few pumps with usage, chain box, bite the bullet and install a new seal, it needs 80-90 wt.

[Bobus2003]

I use the Permatex Ultra Black (Oil Restistant) RTV Sealant if i have to leak proof, or just temporary fix a oil leak. Sometimes it ends up being a long-term fix cause it works so nice.

http://www.permatex.com/products/Automotive/automotive_gasketing/gasket_makers/auto_Permatex_Ultra_Black_Maximum_Oil_Resistance_RTV_Silicone_Gasket_Maker.htm

May give this a shot sometime though:
http://www.permatex.com/products/Automotive/automotive_gasketing/gasket_makers/permatex_gear_oil_rtv_sealant.htm

[arojay]

 Lots of gearboxes have seen the change to grease, but just be sure that there is no lube pump in the unit.

[den]

Paint Glyptal over the leak

[Magicman]

One of the gearboxes on my Bushhog was leaking badly.  I shot a tube of grease in it, and now it holds 80-90 without leaking.