• The Roadster Factory Recovery Fund - Friends, as you may have heard, The Roadster Factory, a respected British Car Parts business in PA, suffered a total loss in a fire on Christmas Day. Read about it, discuss or ask questions >> HERE. The Triumph Register of America is sponsoring a fund raiser to help TRF get back on their feet. If you can help, vist >> their GoFundMe page.
  • Hey there Guest!
    If you enjoy BCF and find our forum a useful resource, if you appreciate not having ads pop up all over the place and you want to ensure we can stay online - Please consider supporting with an "optional" low-cost annual subscription.
    **Upgrade Now**
    (PS: Subscribers don't see this UGLY banner)
Tips
Tips

Reversing With Overdrive "On"

nevets

Jedi Knight
Country flag
Offline
As I was backing out of my garage, I heard a curious clicking sound. When I recognized that moving the shift lever to the right would cause the clicking to occur, I realized what was going on and switched the OD to normal. I then when on a longish drive and the OD worked (and sounded) as it should. Now I'm worried that I may have damaged the transmission and/or OD and a major repair may be looming. I'm hoping I dodged a bullet, but would feel better if I got some reassurance. Thanks.
 

red57

Jedi Knight
Country flag
Offline
I think you're OK, If you just started it and backed out of the garage, you would not have had a chance to make hydraulic pressure in the OD (transmission tailshaft has to turn to pump oil to make pressure in order to shift) so it would not have been able to physically shift into OD - you were still physically in 'normal' and were just hearing the solenoid clicking.
 

Keoke

Great Pumpkin
Country flag
Offline
As I was backing out of my garage, I heard a curious clicking sound. When I recognized that moving the shift lever to the right would cause the clicking to occur, I realized what was going on and switched the OD to normal. I then when on a longish drive and the OD worked (and sounded) as it should. Now I'm worried that I may have damaged the transmission and/or OD and a major repair may be looming. I'm hoping I dodged a bullet, but would feel better if I got some reassurance. Thanks.
Well nevets:

All I can say is maybe U got Lucky. ?
 

AHDB7

Freshman Member
Country flag
Offline
John, than you for the link to the Triumph thread on this topic. It is quite informative.
 

PAUL161

Great Pumpkin
Country flag
Offline
I've done it a couple of times backing out of the garage in the 72 B, never caused a problem, not that I would recommend making a habit of it. PJ
 
OP
nevets

nevets

Jedi Knight
Country flag
Offline
Thanks for the replies and for the link to the TR post. I did warm up the car for a few minutes before backing up and during that time I heard intermittent clicking. At first I thought it could be the fuel pump acting up. Hopefully, I will have the presence of mind to avoid doing this again?
 

red57

Jedi Knight
Country flag
Offline
nevets,

Again, unless you had it jacked up so the driveshaft could turn, just sitting still the transmission tailshaft/overdrive input shaft is not turning, therefore the pump is not pumping so it's making no hydraulic pressure so it cannot shift into OD.

I severely damaged one once many years ago by having the shift lever switch disconnected (so I could have OD in 2nd gear - the foolishness of youth). I missed a turn and stopped and quickly put it in reverse without turning the OD off and backed up about 5' before there was a very noticeable grinding/crunching feel/sound. I barely made it the 3 miles to home and upon disassembly found the unidirectional clutch had destroyed itself along with the anulus it runs in - was very expensive. Point being, if you damaged anything, I think you would know right away.
 
Similar threads
Thread starter Title Forum Replies Date
6 Reversing Camera Other Cars 1
S TR4/4A Reversing upper fulcrum link Triumph 3
T Reversing w/. OD engaged - symptoms? Triumph 14
jjbunn Reversing Light Brackets Jaguar 7
G Reversing light problem - need a bit of help Triumph 22
19_again reversing polarity on generator MG 1
RickPA Overdrive Oil Pressure Austin Healey 8
bighealeysource Leaking Overdrive and Gearbox Drain Plugs Austin Healey 19
71TR6 TR6 Type-J Overdrive identification Triumph 4
luke44 TR2/3/3A Calling all Wiring experts TR3 Overdrive Wiring ver A or ver B or are they the same? Triumph 8
T Wanted Working overdrive unit Austin Healey Classifieds 2
D Overdrive Stops Working After Oil Change Austin Healey 26
S TR2/3/3A overdrive does not function Triumph 45
T TR2/3/3A A type overdrive hard engagement Triumph 28
S Overdrive Throttle Switch Austin Healey 4
KVH General Tech Overdrive--Afraid it's Serious Triumph 45
M Overdrive Pressure Test Austin Healey 2
BN6_2197 Gearbox/Overdrive Removal Austin Healey 25
T For Sale MGB Black Label Overdrive For Sale Or Trade For New RB Parts MG Classifieds 2
Fanch00 Non-Overdrive Benefits? Austin Healey 10
AUSMHLY BJ8 Overdrive Oil Passages Austin Healey 2
R TR6 J-Type overdrive will not disengage when warm Triumph 8
S Overdrive Relays Austin Healey 2
AUSMHLY Overdrive Buffer Pad Austin Healey 3
L Stuck in Overdrive Austin Healey 10
AUSMHLY Flushing the Transmission/Overdrive Austin Healey 7
T Weight of BJ7 Transmission/Overdrive Austin Healey 10
P Overdrive Not Engaging Austin Healey 4
S BJ8 Overdrive Stays Engaged Austin Healey 35
AUSMHLY BJ8 Overdrive Accumulator Spring Tube Austin Healey 1
RonC TR2/3/3A J Type Overdrive in TR3A Triumph 4
AUSMHLY BJ8 Overdrive Pressure Loss Austin Healey 11
AUSMHLY BJ8 Overdrive Oil Pressure Austin Healey 14
John Turney Overdrive Pump Austin Healey 6
S Removing Overdrive Shaft Lever Pin Austin Healey 7
Healey Nut Overdrive Relay Austin Healey 1
T Clutch or Overdrive Slip Austin Healey 8
G TR4/4A "Engine seized after engaging overdrive at low speed. Triumph 26
A TR4/4A TR4 Overdrive Solenoid Triumph 19
H TR4/4A A-type overdrive pump Triumph 4
B COMPLETE DROP-IN Rebuilt 1975/6 MG Midget 1500 engine PLUS rebuilt Spitfire Overdrive trans NEVER INSTALLED Spridgets Classified 2
Rob Glasgow New Fangled Electric Overdrive Austin Healey 9
Got_All_4 TR6 Refurbishing gearbox with A type overdrive Triumph 7
J Transmission and Overdrive Rebuild Austin Healey 6
C Overdrive Failure Austin Healey 18
D TR2/3/3A Overdrive question. Triumph 49
ckeithjordan TR2/3/3A Overdrive Wiring Triumph 5
D TR2/3/3A Type A overdrive not engaging Triumph 0
D TR2/3/3A Type A overdrive not engaging Triumph 16
R TR2/3/3A Overdrive wiring installation Triumph 14

Similar threads

Top