BUSY BOLTERS Are you one?  The Shop Area
continues to pull in the most views on the Stovebolt. In August alone there were over 22,000 views in those 13 forums.
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Jul 21st, 2025 | | | | Joined: Jul 2018 Posts: 9 New Guy | | New Guy Joined: Jul 2018 Posts: 9 | I recently bought back my 3600 that I owned 13 years ago. While rolling around on the ground under it greasing the various fittings I noticed the lower right fitting was missing. I cleaned up the hole and have tried to install grease fittings from two different sources and they just will not screw into place. Knowing that lack of lube is a major factor in King Pin failures I need to figure out how to get a new one in there. At this time the truck drives very nicely on the road without wandering.
1954 3600 three window
| | | | | Joined: Sep 2013 Posts: 1,288 'Bolter | | 'Bolter Joined: Sep 2013 Posts: 1,288 | Pull the fitting from the other side and carry it with you next time you go fitting shopping. I do suspect someone will chime in with the proper size so you can shop online though.
added in edit; WELCOME ABOARD!
RonR
Last edited by moparguy; 07/08/2018 11:19 AM.
1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1964 CJ5
| | | | | Joined: May 2005 Posts: 8,877 . | | . Joined: May 2005 Posts: 8,877 | | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Did someone break off the old one, the reason you cannot insert a new one? Is the hole open and can you see the threads?
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Jul 2018 Posts: 9 New Guy | | New Guy Joined: Jul 2018 Posts: 9 | Yes, the threads are showing. I tried to clean up the fitting hole and the new fitting still won't screw in.
1954 3600 three window
| | | | | Joined: May 2005 Posts: 8,988 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,988 | I ran into the same problem. The FLAPS have a bunch of metric thread Zerks. They get mixed up. They don't know what the are. They are so close that nobody knows. The nature of pipe threads is that they are interference fit. This makes this small problem very difficult and you can damage the female threads on the truck and then you are screwed. The metric ones will start in and if you crank on them because you think it's normal pipe tightness, it's Kings X.
Get a 1/8 NPT female coupling from Home Depot, take it with you to FLAPS and make sure the next Zerk fits into it easily. You can't measure the difference between Metric and NPT. You can't even hardly compare the difference. You need the Home Depot "Go/No-Go" gauge.
If they are in a package, READ the package. 90% are metric. Don't trust the counter guy!!!!!!!! He drives a Rice Burner and thinks a Zerk is a Greek Sandwich. | | | | | Joined: Jul 2018 Posts: 9 New Guy | | New Guy Joined: Jul 2018 Posts: 9 | Thank you for this vital info. I will do this for sure.
1954 3600 three window
| | | | | Joined: Jul 2018 Posts: 9 New Guy | | New Guy Joined: Jul 2018 Posts: 9 | Just went under the truck with a bright flashlight. The threads are NOT showing. It looks like the fitting broke off just below flush with the surface.
1954 3600 three window
| | | | | Joined: Apr 2008 Posts: 888 'Bolter | | 'Bolter Joined: Apr 2008 Posts: 888 | A small ez out may do the trick but be very careful not to break it off in the fitting. A small Phillips head screwdriver may also get enough grip to turn the fitting loose.
Ed
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