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overdrive unit #2613846 01/29/19 02:39 AM 01/29/19 02:39 AM
Joined: Aug 2003 Posts: 954 garnett kansas rhad OP super stock
rhad OP super stock Joined: Aug 2003 Posts: 954 garnett kansas	seems i was told that the od unit was the same on a A500 and a A518???,hyd controled not ecm controled>?? my ladder of success is missing some rungs

Re: overdrive unit [Re: rhad] #2613881 01/29/19 05:21 AM 01/29/19 05:21 AM
Joined: Dec 2009 Posts: 20,640 in a cattle trailer down by th... G Guitar Jones Paddle faster! I hear banjo music!
Guitar Jones Paddle faster! I hear banjo music! G Joined: Dec 2009 Posts: 20,640 in a cattle trailer down by th...	Sort of. The number of clutches may be different but as long as it's not a diesel or V10 they will interchange. "Follow me the wise man said, but he walked behind" '92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion. '74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon! 2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.

Re: overdrive unit [Re: rhad] #2614126 01/29/19 04:38 PM 01/29/19 04:38 PM
Joined: Jan 2003 Posts: 25,796 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,796 Rio Linda, CA	The pre-'96 OD unit still has a mechanical governor inside so it is considered a hydraulic-controlled unit even though it needs an electric signal to engage the OD. The INTERNET, the MISinformation superhighway

Re: overdrive unit [Re: rhad] #2614275 01/29/19 09:35 PM 01/29/19 09:35 PM
Joined: Sep 2011 Posts: 2,042 colorado S savoy64 top fuel
savoy64 top fuel S Joined: Sep 2011 Posts: 2,042 colorado	i heard they were all the same....

Re: overdrive unit [Re: rhad] #2614299 01/29/19 10:07 PM 01/29/19 10:07 PM
Joined: Mar 2011 Posts: 3,076 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,076 Michigan	Originally Posted By rhad seems i was told that the od unit was the same on a A500 and a A518???,hyd controled not ecm controled>?? Not very clear on what you are asking. Two variants for control regarding the 1/2, 2/3 shifts. RH uses a typical governor while the RE uses a governor pressure transducer and duty cycle solenoid to generate gov. pressure. Both the RH and RE use electronic controls to achieve the 3/4 shift.

Re: overdrive unit [Re: rhad] #2614348 01/29/19 11:31 PM 01/29/19 11:31 PM
Joined: May 2003 Posts: 6,562 Downtown Roebuck Ont Twostick Still wishing...
Twostick Still wishing... Joined: May 2003 Posts: 6,562 Downtown Roebuck Ont	I think he wants to know if an A500 OD unit will interchange with an A518. Kevin

Re: overdrive unit [Re: rhad] #2614377 01/30/19 12:22 AM 01/30/19 12:22 AM
Joined: Mar 2011 Posts: 3,076 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,076 Michigan	The back of all overdrive transmissions are the same. There are two styles of overdrive piston retainer - one for the RE and one for the RH.

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