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1940 Ford Pickup - Chassis Assembly Tips

Total Cost Involved Builds a '40 Ford Chassis for Me!
February, 2009
By Rich Boyd
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Each new TCI chassis begins... 
   
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Each new TCI chassis begins life on the frame- rail jig, where long strips of steel are welded together in 5-inch short welds to prevent warping.
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If you look closely you can... 
   
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If you look closely you can see the 4- to 5-inch welds were spaced equidistantly apart. They were filled-in after a cooling period.
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After the edge-welding was... 
   
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After the edge-welding was complete, the framerail went to the grinding room where the welds were ground smooth. Good weld-penetration is important for a clean framerail.
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We arrived at TCI as our framerails... 
   
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We arrived at TCI as our framerails were located in the '40 Ford chassis jig. A three-man crew began to install the rectangular-tube crossmembers and the front crossmember for the independent front suspension.
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Jorge Tejada prepared to... 
   
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Jorge Tejada prepared to clamp the forward leaf-spring bracket in place.
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Jorge checked the measurement... 
   
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Jorge checked the measurement on the bottom of the framerail for proper positioning of the leaf-spring mounting bracket from the rear shock-absorber mount crossmember.
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Meanwhile, Chuy Rodarte prepared... 
   
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Meanwhile, Chuy Rodarte prepared to install the front crossmember.
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Each dimension was double-checked... 
   
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Each dimension was double-checked before and after each subcomponent was tack-welded in place. This is best achieved by cross-measuring the chassis diagonally.
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It's possible for the crossmember,... 
   
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It's possible for the crossmember, or bracket, to move slightly when being tack-welded.
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Only after Chuy was satisfied... 
   
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Only after Chuy was satisfied the position of the front crossmember, or bracket, was correct, he then welded the piece securely in place.
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The upper shock mount is located... 
   
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The upper shock mount is located on a crossmember slightly behind the rear axle. The crossmember has steel sleeves welded into the square-tube crossmember. Here the sleeves were being ground smooth.
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As work progresses, Jose Portillo... 
   
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As work progresses, Jose Portillo began to install the ladder-style X-member of the chassis.
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The double rectangular tubing... 
   
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The double rectangular tubing that makes up the center X-member creates excellent strength and allows room to position the exhaust between the X-members. This will reduce the risk of damage to the exhaust system, even if the vehicle stance is very low.
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The brake-booster bracket... 
   
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The brake-booster bracket is located in a protected area below the driver-side floorboard.
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At this point the crossmember... 
   
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At this point the crossmember had been completely welded, and it was time to remove the chassis from the chassis jig.
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The crossmember welds were... 
   
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The crossmember welds were ground smooth and inspected for penetration. Soon it would move to the next station where the engine/ trans mounts would be installed.
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The clock indicates 10:30... 
   
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The clock indicates 10:30 and the first crew is finished with their tasks.
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Jorge, Chuy, and Jose have... 
   
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Jorge, Chuy, and Jose have proudly completed their portion of the new chassis construction.
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A Ford 351W engine and Ford... 
   
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A Ford 351W engine and Ford AOD trans would be the front part of the drivetrain. The next crew selected a dummy block and trans housing to accurately install the engine/trans mounts.
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A special jig was located... 
   
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A special jig was located at the front of the framerails. Dimensions were taken from this fixture.
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The engine would need room... 
   
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The engine would need room up front for a water pump, a fan, and pulleys.
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The crew checked the centerline... 
   
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The crew checked the centerline of the AOD trans housing and engine, as well as the correct position forward/rearward.
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It's also important to mount... 
   
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It's also important to mount the engine/trans on a slight angle to position the driveshaft with the proper offsets. This eliminates the possibility of vibrations created by too much offset in the driveshaft/trans universal joint.

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