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Transmission reverse problem #1289024 08/21/12 09:37 AM 08/21/12 09:37 AM
Joined: Jan 2010 Posts: 139 Canada M Max Weg OP member
Max Weg OP member M Joined: Jan 2010 Posts: 139 Canada	I am having a problem with reverse gear in a Protrans it will work fine when the car is idling but if you put power to it it will stop like you put the brakes on. I have rebuilt the clutch packs changed the valve body, pump seal rings and gasket and convertor. Any ideas would be appreciated. Max Weg

Re: Transmission reverse problem [Re: Max Weg] #1289025 08/21/12 10:22 AM 08/21/12 10:22 AM
Joined: Jan 2003 Posts: 75,070 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,070 U.S.S.A.	Does it have a trans brake ? Reverse is the rear band applied and the front clutch applied , if one is not doing it's job you'll have no reverse. Check the rear band and it's apply servo piston since you don't mention that .

Re: Transmission reverse problem [Re: JohnRR] #1289026 08/21/12 10:29 AM 08/21/12 10:29 AM
Joined: Jan 2010 Posts: 139 Canada M Max Weg OP member
Max Weg OP member M Joined: Jan 2010 Posts: 139 Canada	No it doesn't have a trans brake. I rebuilt the servo's and they both move freely. I have reverse it just stops or binds. Max Weg

Re: Transmission reverse problem [Re: Max Weg] #1289027 08/21/12 12:46 PM 08/21/12 12:46 PM
Joined: Aug 2003 Posts: 43,244 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,244 Bend,OR USA	Call Dave at Pro Trans, 661-940-740 and ask him Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Transmission reverse problem [Re: Max Weg] #1289028 08/21/12 02:13 PM 08/21/12 02:13 PM
Joined: Jan 2003 Posts: 25,899 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,899 Rio Linda, CA	Sounds like it's in two gears at once. Does the car creep forward in Neutral? If so, the rear clutch isn't fully releasing. If it doesn't creep in Neutral, the VB/case mating surface around the accumulator might be warped allowing cross flow between the rear servo and the kickdown servo. The INTERNET, the MISinformation superhighway

Re: Transmission reverse problem [Re: John_Kunkel] #1289029 08/21/12 04:08 PM 08/21/12 04:08 PM
Joined: Jan 2003 Posts: 9,826 las vegas 70AARcuda master
70AARcuda master Joined: Jan 2003 Posts: 9,826 las vegas	I had a similar problem after I rebuilt a trans, put in reverse rolls ok..step on gas in reverse it would lock up or bind ..would not move.. I had used one of the plastic style sealing rings on the main input shaft right next to the rear clutch pac..and it had gotten torn during assembly...replaced the sealing ring and trans still working today.. Tony 70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)

Re: Transmission reverse problem [Re: Max Weg] #1289030 08/21/12 04:21 PM 08/21/12 04:21 PM
Joined: Jan 2010 Posts: 139 Canada M Max Weg OP member
Max Weg OP member M Joined: Jan 2010 Posts: 139 Canada	I found the problem with help from Dave at Protrans the pump stator was cracked. I had figured it was cross feeding so I changed everything else except the pump now I know what to check in the future. Thanks for the input! Max Weg

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