Shaft seals leak because the bearing or bushing behind them is worn, allowing the shaft to bounce up and down. Simply replacing the seal is usually only a temporary fix. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
From what I read in those slides and Pg 2-11 of the 1947 Truck Shop manual, leaks around the shaft are noted as not repairable and require the shock to be replaced.
There are several vendors that offer rebuild services though. The Filling Station will rebuild your originals, or you can get already rebuilt rear shocks left 1/2 ton and right 1/2 ton from Jim Carter. Hope this info proves helpful.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
OEM and custom shock absorbers, USA made coil springs and leaf springs, steering dampers for all makes and models, rebuild service for original hydraulic and lever action shocks. Rebuild service for steering gears and power steering pumps.
A-1 Shock Absorber Company 365 Warren Av. unit #101 and 109 Silverthorne, CO. 80498 800-344-1966 or 970-513-8283 http://www.shocks2springs.com/
Rebuilders of lever action shocks, SU & Stromburg carburetors, clutch and brake cylinders
1950 Chevrolet 3100 (Ol' Roy) 1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1956 Cadillac Sixty Special Fleetwood (The Godfather) | 1966 Oldsmobile Toronado (The Purple Knif) | 1966 Ford Mustang (Little Red) | 1964 Ford Galaxie 500 coupe | 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
Thanks Otto, I'll see if they can help with my shock. I have never taken one apart or looked inside, but they can't be that difficult. My old 47 3600 rides very well, better than my 2000 F250 so, I don't want to change anything on it from the original running gear. If I could identify the seal used and replace the bushing, I would tackle it myself.
One of those places might be able to tell you what parts to use.
1950 Chevrolet 3100 (Ol' Roy) 1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1956 Cadillac Sixty Special Fleetwood (The Godfather) | 1966 Oldsmobile Toronado (The Purple Knif) | 1966 Ford Mustang (Little Red) | 1964 Ford Galaxie 500 coupe | 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
