grease spec for M37 wheel hubs

[sim60]

Hi, could anybody give me the grease specs for the Front wheel hubs on my 1952 M37 as the stuff I am using seems to runny especially when we get hot days(which we do some times get over here) as the spec on the plate in the cab means nothing over here,
Thanks Simon

[Cal_Gary]

Should use mil-spec "Grease-Bearing/Roller" or equivalent, adding it from the top zerk until it starts coming out the bottom access plug (which you must remove first).
Gary

[Sal]

Simon . This old thread might be of some help to you.

http://www.g741.org/PHPBB/viewtopic.php ... EASE#p3187

Sal

[MSeriesRebuild]

The mil spec grease info from 60 years prior is absolutely worthless as those products as shown do not exist today. If it were rewritten today, it would be vastly different. NLGI#2 is the bearing grease recommendation today. You mentioned runny grease/oil dripping on hot days. I can explain that easily, the lower end products and even moderate quality greases today, the oil in the grease separates and drips out, especially at high temps. To stop it, you need to disassemble and clean out all the old grease. Do any necessary repairs to hard parts and seals, refill with new HIGH quality synthetic NLGI#2 spec grease that is designed for bearing use. Check carefully before you buy, all greases that claim to meet the NLGI#2 spec (or some form of it) are not recommended for packing bearings, obtain and read those spec sheets carefully. The high end products such as Amsoil multi-purpose grease is a product you can use that will not drip; IF all systems are repaired properly. You may also have inner axle oil seal / axle shaft wear allowing the front diff oil to leak into the knuckle housing and eventually through the bearings and into the hubs. Checking out all these possibilities, doing necessary repairs, and installing high quality grease that will stay where it needs too will stop your issue. Honestly, anything short of that, you may as well learn to tolerate runny/oil dripping conditions.