Greasing everything
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Z-bar is another name for the clutch equalizer bar, 7528 in parts catalog pic.
There should be a zerk fitting, but if a rubber plug is in place, remove it, go to an autoparts store and buy a 1/4" straight zerk.
(2) 358979-S are the felt washers that retain the grease, (2) C1AA-7343-A are the nylon pivot bushings, (2) 97474-S are the clips that retain these parts to the pivots.
New User
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Thanks Bill but I still can't figure out that support. I went out and had another look. There are 2 drive shafts, 1 runs about 3 ft from the trans and terminates with a bearing and female spline supported to the frame. The 2nd shaft runs to the axle and has a long male spline shaft that runs to this bearing. It has a zerk fitting, I've pumped a lot of grease into the zerk but have naver seen any run out of the bearing. I assume that's how its lubed but I'm not sure.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
No pic of the "Driveshaft Center Support" in the 1964/72 truck catalog, so here's a pic from the '73/79 truck catalog.
The center support related parts (4805/4808/4818/4826/4835/4840) are the same: 1961/79 F100/250 & some F350's. FoMoCo sold all these parts as a kit: D9TZ-4800-A
There is no way to grease the 4840 bearing, as it's a sealed unit. But the 4841 slip yoke itself has a zerk fitting (87901-S), pic shows another zerk (87907-S) on the center u-joint.
But, the thing is, are these zerk fittings already present, or are rubber plugs in place instead? It's also possible that all 3 of the u-joints have no place for zerks.
87901-S .. Zerk Fitting = 1/8" -27 pipe thread x 3/4" long, 3/16" thread length / 87907-S .. Zerk Fitting = 1/4" -28 pipe thread, 11/16" long, 15/64" thread length.
The center support related parts (4805/4808/4818/4826/4835/4840) are the same: 1961/79 F100/250 & some F350's. FoMoCo sold all these parts as a kit: D9TZ-4800-A
There is no way to grease the 4840 bearing, as it's a sealed unit. But the 4841 slip yoke itself has a zerk fitting (87901-S), pic shows another zerk (87907-S) on the center u-joint.
But, the thing is, are these zerk fittings already present, or are rubber plugs in place instead? It's also possible that all 3 of the u-joints have no place for zerks.
87901-S .. Zerk Fitting = 1/8" -27 pipe thread x 3/4" long, 3/16" thread length / 87907-S .. Zerk Fitting = 1/4" -28 pipe thread, 11/16" long, 15/64" thread length.
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Joined: Aug 2013
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Thanks again Bill, that's the animal. I'll bet that one is hard to find and not cheap, I hope mine holds out for a while. All of my u-joints have zerk's, they're all pretty tight so they've probably been replaced once or more.
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