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Banging When Putting in Gear

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Old Apr 28, 2004 | 02:42 PM
  #1  
MaxTek's Avatar
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Banging When Putting in Gear

'78 Ford F150 Automatic

When I put my truck into reverse it bangs bad. I have to really apply the brakes hard to quiet it. When I put it in drive it is only bad when the truck is parked on a hill (facing down).

From what some people tell me this is a very common older Ford ailment...but they can't tell me how to fix it...affordably that is.

Is it something simple?

Thanks,

MaxTek
 
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Old Apr 28, 2004 | 03:20 PM
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dfisher1
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From: Gainesville, FL
Max,
I can help you on this one!
Add a leaf spring or two. Your springs are worn out and allowing the rear end body to rotate. This allows the drive shaft to slide forward, causing the yoke to hammer into your tranny. It is referred to as, "Driveshaft Clunk" in Detroit. It is becoming a more common problem with modern trucks as they lighten the suspensions.
Good Luck,
KingFisher
 
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Old Apr 28, 2004 | 04:36 PM
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Worn u joints can cause this too. Check the u joints for excessive play.

Marty
 
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Old Apr 28, 2004 | 06:20 PM
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From: East Flat Rock NC
I think that I would check the u-joint and it could also be trans. mount and,
one other thing i would look for is worn out motor mounts !



P.S. If it did turn out to be the spring thing i would try a stiffer shock first.
 
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Old Apr 29, 2004 | 07:24 AM
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MaxTek
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Wow...leaf springs, motor mounts or u-joint. Well at least I got some direction. Thanks guys.

I will check'em but one question...as far as the leaf springs go. What is involved with that? Will the mechanica be able to pull the additional leaf springs off his shelf or is that coming from a donor truck. That is one thing I have never messed with.

MaxTek
 
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Old Apr 29, 2004 | 07:43 AM
  #6  
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dfisher1
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From: Gainesville, FL
Max,
1.There is a quich way to validate whether the srings are shot or not.
Put the brake on and have some one shift the vehicle from reverse to drive.
If it is "clunking" during this process you should be able to see to rear end nose, the flange which attaches to the driveshaft, jump up and down sa you shift it. In Turn, you should be able to watch the driveshaft move in and out of the tranny.
2. The U-Joints will be by inspection, grab the driveshaft and physically push and pull on the driveshaft. You should be able to visibly notice play.
NOTE: Worn U-joints can cause vibration at highway speeds.
3. Motor mounts: Generally a broken motor/tranny mount allows the drivetrain to shift left to right and right to left. This can make shifting difficult and you can usually see the shift indicator in the column move as the drivetrain shifts.
Consider it,
KingFisher
 
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Old Apr 29, 2004 | 08:09 AM
  #7  
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MaxTek
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From: Delaware
Originally Posted by dfisher1
Max,
1.There is a quich way to validate whether the srings are shot or not.
Put the brake on and have some one shift the vehicle from reverse to drive.
If it is "clunking" during this process you should be able to see to rear end nose, the flange which attaches to the driveshaft, jump up and down sa you shift it. In Turn, you should be able to watch the driveshaft move in and out of the tranny.
2. The U-Joints will be by inspection, grab the driveshaft and physically push and pull on the driveshaft. You should be able to visibly notice play.
NOTE: Worn U-joints can cause vibration at highway speeds.
3. Motor mounts: Generally a broken motor/tranny mount allows the drivetrain to shift left to right and right to left. This can make shifting difficult and you can usually see the shift indicator in the column move as the drivetrain shifts.
Consider it,
KingFisher
Ok. I printed this out and will try it. Thanks a lot.
 
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