<div dir="ltr">Hit the OD with a hammer once and the problem went away.<div>Ran up the pressure again and the problem was back. This time it took a number of pretty good whacks to get it unstuck.</div><div>Pressurized it a third time and now it won't unstick after a lot of good whacks. I'm reluctant to hit it any harder.</div><div>Unless there are any other ideas, I guess the damn thing comes out and apart again.</div><div>Cheers,</div><div>Mike</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Aug 20, 2019 at 8:01 AM Chris Dimmock <<a href="mailto:austin.healey@gmail.com">austin.healey@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div>Nah. </div><div id="gmail-m_-3178964089480278003AppleMailSignature">Just tap the steel ring in the overdrive with your knock off hammer to release the springs. </div><div id="gmail-m_-3178964089480278003AppleMailSignature">Works every time. For me anyway. </div><div id="gmail-m_-3178964089480278003AppleMailSignature">The springs release the overdrive, and sometimes, they get just get stuck. </div><div id="gmail-m_-3178964089480278003AppleMailSignature">It's a mystery of the world. </div><div id="gmail-m_-3178964089480278003AppleMailSignature">But a few taps on that steel plate seems to realign the planets. And release those pesky springs!</div><div id="gmail-m_-3178964089480278003AppleMailSignature">Allegedly. </div><div id="gmail-m_-3178964089480278003AppleMailSignature">Worked for me. 3 times in the past 35 years. Mostly when I'd driven the car hard. </div><div id="gmail-m_-3178964089480278003AppleMailSignature">But it seems to fix the issue, when you can't select reverse. </div><div id="gmail-m_-3178964089480278003AppleMailSignature">And it's so much easier on the bench, than on your back, lying under the car! </div><div id="gmail-m_-3178964089480278003AppleMailSignature">Best </div><div id="gmail-m_-3178964089480278003AppleMailSignature">Chris. <br><br></div><div><br>On 20 Aug 2019, at 10:20 pm, Michael Salter <<a href="mailto:michaelsalter@gmail.com" target="_blank">michaelsalter@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="auto">Hi Mike,<div dir="auto">I recently experienced exactly the same problem with newly rebuilt a BT7 side shift gearbox and overdrive unit when turning it backwards before adding oil.</div><div dir="auto">Like you I suspected the Sprague clutch but after considerable investigation the cause turned out to be the new 2nd gear syncro ring which, when the box was turned backwards, was winding itself tightly onto the cone of 2nd gear. </div><div dir="auto">This is something I've never experienced before but concluded that it was unlikely to present a problem after the box has be run with new oil.</div><div dir="auto">This may not be the cause in your case but certainly it is something worth considering. </div><div dir="auto">M</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Aug 19, 2019, 10:54 PM Mike Tobin, <<a href="mailto:ahbt71@gmail.com" rel="noreferrer" target="_blank">ahbt71@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><table cellpadding="0" class="gmail-m_-3178964089480278003m_4605444903353592928m_3118405970152023969gmail-ajC" style="border-spacing:0px;line-height:20px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:14px"><tbody><tr class="gmail-m_-3178964089480278003m_4605444903353592928m_3118405970152023969gmail-ajv"><td colspan="2" class="gmail-m_-3178964089480278003m_4605444903353592928m_3118405970152023969gmail-gL" style="vertical-align:top;width:auto;padding:2px 0px"><span style="font-family:Arial,Helvetica,sans-serif;font-size:small">Hello Again,</span><div style="font-family:Arial,Helvetica,sans-serif;font-size:small"><br></div><div style="font-family:Arial,Helvetica,sans-serif;font-size:small">Finally got oil pressure in the rebuilt OD. With the car in 4th it shows about 500 psi on a gauge.<div>However, I noticed when reattaching the drive shaft that with the trans in neutral the output won't rotate in the reverse direction. It rotates easily by hand in the forward direction. This is true before and after the pressure has been released. Before getting pressure in the OD it rotated by hand in both directions. I haven't tried to engage the OD. It's a hard mechanical stop. I'm afraid the one-directional clutch be engaged and I don't want to break anything.</div><div><br></div><div>I've been a long time gone from this fine place. Life's taken a lot of twists and turns, but it's good to be getting back to having to come here for help.</div><div><br></div><div>Thanks and Cheers</div><div>Mike Tobin</div><div>Townsend, Montana</div></div></td></tr></tbody></table></div>
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