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Trying to figure out how many cooling fans were made between 37 and 48 so would any of the parts manuals have pictures,trying to figure out a fan to radiator clearance issue in my pieced togather with many years parts 37 p/u.
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somewhere between 1/2 to3/8" clearance Jeff. mike
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I have about 1/4 inch and not enough room to change the belt,I did have a 4 row radiator made and that might be part of the problem. New engine going in so so time to fix that problem while its apart.
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Did some digging through my manuals and I do have a 33 through 61 parts manual,from what I can tell at that time all that was available for 37 to 54 pass and light duty were two fans so that is most likely a 54 style fan which is the last fan made for that series of engines and its not quite right. I am going to hunt for a 48 and earlier parts manual that should have numbers for all the fans that would possibly work,by the time that manual I have was made most of the parts for the older vehicles had been discontinued.
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Oil Can Mechanic
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1937 was a particularly tricky year for water pumps and fans. There were actually 3 different water pump designs used in 1937.
The key difference with respect to fans was that the newer style pumps (the second and third designs) had a 1/2” longer shaft. This required a new fan design that had a separate hub and offset blades. The original fan was simpler 2 stamped double ended fan blades spot welded together.
If you dig around in some of my old posts you will see pictures and part numbers.
And all this was on pre-1940 216’s.
Rusty
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The fan I think is a 37 hits the balancer on the new engine and the fan that is on the existing engine is real close to the fan.
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Jeff My 47 parts book lists 16 1/4" dia used on 1937with bushing type pump.........1937.............all 1939.............13, 14,15 (first jobs)..................838279 (bearing type pump with 4 1/32" shaft) (5245784).....1937 38........all..............................................A F06310 15 3/4" dia (838777).......................................................1938.............10, 12.......................................838933 16 1/4"dia (838775).......................................................1938 ...........13, 14,15, 16.............................838936 15 3/4" dia (580215).......................................................1939 42.......10, 12, AG, AH, BG, BH 1946............10, 12........................................838277 18" dia (5802618)............................................................1939 42.......13, 14, 15, 16, A, AL, Y, M........839020 .........................................................................................1945.............13, 16.......................................3661061
Note...Fan blade 838933 must be installed with 598308water pump assy.,on 1937 series GA, GB, and fan blade 838936 on 1937 series GC, S, HL
This is a from an Australian parts book but all previous comparisons have proved to be a copy of the US books. The spacing wont adjust to so the lines are correct Tony
Last edited by tonyw; 02/17/20 03:34 AM.
1938 1/2 ton Hope to drive it before I retire
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Balancer was not all the way in but the fan is now only a hair away so going to get a 1/8 spacer made.
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