 TDC mark, Position problem |
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| shane |
 Sep 22 2019, 12:17 PM
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#1
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Member  Group: Members Posts: 355 Joined: 12-February 13 Member No.: 15,518 Region Association: None  |
I replaced the main seals and reassembled everything my question is is it possible to install the cooling fan in the wrong position, Given the shaft key and the mounting pin? When my TDC mark is in the notch my rotor is pointing towards #1 cylinder and when I rotate the engine and the rotor is pointing towards #2 the white dot I painted on the fan per instructions for adjusting valves under the car pops up in the notch on top of the fan housing. Appreciate any insight thanks
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| 914Sixer |
Sep 22 2019, 01:17 PM
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#2
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914 Guru Group: Members Posts: 9,123 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region 
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Fan only goes on one way on the crankshaft
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| IronHillRestorations |
Sep 22 2019, 06:17 PM
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#3
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I. I. R. C. Group: Members Posts: 6,813 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None
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There's a keyway on the crankshaft and the fan hub, and there's a pin on the hub and a corresponding hole in the impeller, so if you have all the right parts and everything is there, only one way to put it together. If the pin is gone, you have the impeller indexed wrong
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| shane |
Sep 22 2019, 10:35 PM
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#4
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Member Group: Members Posts: 355 Joined: 12-February 13 Member No.: 15,518 Region Association: None |
QUOTE(IronHillRestorations @ Sep 22 2019, 05:17 PM)  There's a keyway on the crankshaft and the fan hub, and there's a pin on the hub and a corresponding hole in the impeller, so if you have all the right parts and everything is there, only one way to put it together. If the pin is gone, you have the impeller indexed wrong Great thanks for the reply, I’m not much of a mechanic so I get a bit confused easy. The TDC mark on the impeller and TDC on the #1 piston are in the same position at the same time so I’m guessing after that the distributor position will just follow that. Im pretty sure I can get er done. Thanks again |
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| jcd914 |
Sep 23 2019, 12:42 AM
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#5
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Advanced Member Group: Members Posts: 2,092 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
The firing order is 1 - 4 - 3 - 2.
So from TDC #1 turning the engine 1/2 turn should bring up TDC #4. But if you turned the engine backwards 1/2 turn you would get TDC #2 Jim |
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| Tbrown4x4 |
Sep 23 2019, 05:00 AM
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#6
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Senior Member Group: Members Posts: 707 Joined: 13-May 14 From: Port Orchard, WA Member No.: 17,338 Region Association: None
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I agree with Jim. Make sure you're not turning it backwards. Distributor rotor turns clockwise.
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