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3886 Posts in 1208 Topics- by 2247 Members - Latest Member: Steve Ahmann

May 23, 2012, 02:06:20 AM
Maintenance IssuesTR4 RangeTr4 'A' Type Overdrive Transmission
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Author Topic: Tr4 'A' Type Overdrive Transmission  (Read 952 times)
ksd
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Posts: 26


« on: July 23, 2011, 11:24:42 AM »

 I've installed a rebuilt "A" type gear box with overdrive and have had no problems for approx 3000 miles. However, lately I'm experiencing difficulty shifting into first and out of first into second when the car is cold. After a few miles and she is warmed up everything is fine.
 I'm confident that the clutch is properly adjusted,the slave cylinder correctly installed and there is no issue with the tapered pin that secures the shifting fork to the shaft as I replaced that with a 5/16 aircraft quality bolt. All clutch parts were replaced or rebuilt when I put the car together.
 What would cause difficulty shifting into 1st and 2nd untill she's warmed up?      I do plan to drain the oil and look for metal or  whatever but other than that I'm open to any suggestions or ideas. I'm running 30 weight non detergent in the gearbox as suggested by the guy that rebuily the unit. Thanks: KSD       
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TR3driver
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Posts: 245



« Reply #1 on: July 23, 2011, 05:22:24 PM »

When it is working, how far up from the floor is the clutch pedal when the clutch starts to engage?

Were the pilot bearing & locating pins replaced?

What happens if you try to shift into reverse while it's cold?
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Randall
58 TR3A TS39781LO :(now totaled Sad
56 TR3  TS13571L daily driver
71 Stag LE1473L waiting for engine rebuild
71 Stag LE2014LBW waiting for 4-speed rebuild
ksd
Newbie
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Posts: 26


« Reply #2 on: July 23, 2011, 08:20:11 PM »

 The clutch engages at the upper end of pedal travel and the  throwout bearing and locator pins on the shifting fork were replace. Getting into reverse when she is cold is also difficult but ok when warmed up.  Thanks KSD
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TR3driver
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Posts: 245



« Reply #3 on: July 23, 2011, 08:47:24 PM »

So the gears grind when you shift into reverse cold?

I meant the dowel pins that locate the gearbox to the engine block.  If they are left out, the gearbox can sometimes shift enough on the other bolts to cause the pilot bearing to drag.
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Randall
58 TR3A TS39781LO :(now totaled Sad
56 TR3  TS13571L daily driver
71 Stag LE1473L waiting for engine rebuild
71 Stag LE2014LBW waiting for 4-speed rebuild
ksd
Newbie
*
Posts: 26


« Reply #4 on: July 24, 2011, 11:55:29 AM »

 Dowl pins were there to the best of my recolection. I do have difficulty getting the shifting lever into the gate for reverse but no grinding of gears.
 To recap, hard  to get into first,  hard to shift from first into  second and also difficult to get into reverse. No problems when she is wormed up and driven a few miles
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