• Hi Guest! Being a Paying Supporter is NOT a requirement to participate at BCF. However, subscribing will help ensure we can continue to serve the LBC community for years to come. If you enjoy BCF and find our forum a useful resource...Please consider supporting us by **Upgrading**
    (PS: Subscribers don't see this banner)



Jedi Warrior
Country flag
When installing the third gear on the main shaft (rib case tranny), what is the trick to getting the plunger/spring depressed and then push the lock ring in place over the plunger. In the MGA transmission there is a small hole drilled in the synchro cone above the plunger to help depress the plunger, very simple. Am I missing something? Thanks for any help and have a good day!



Country flag
Make a tool that looks like this and use it to hold the plunger in place while you get the ring in place.


  • BB7F8E2B-71E9-41EF-A26A-DE664FFCBCC7.jpeg
    665.2 KB · Views: 21


Jedi Warrior
Country flag
Thanks for the reply. I did make a thin punch and was able to get the lock washer installed. A simple hole drilled in the gear or at least a groove would have been nice! Thanks again and have a good day!

Similar threads
Thread starter Title Forum Replies Date
A Wanted Rib Case Transmission Spridgets Classified 1
A Rib case problem Spridgets 7
B Purchasing Rib Case Spridgets 17
Gerard Source for front cover w/seal for rib case Spridgets 15
jlaird Rib Case arrived Spridgets 13
britndablood FS 1098 with rib case in North Carolina Spridgets 0
drooartz Smooth case remote shifter on a rib case Spridgets 7
58Custom What is the best documentaton of rib case rebuild? Spridgets 12
Tim Hollister Rib Case Trans Problem - 1st Gear Spridgets 6
S TR2/3/3A 1961 tr3 conversable top rib color Triumph 7
EVSpriteGuy Where to get a reman 1275 rib-cage tranny? Spridgets 15
sim Looking for a good usable rib tranny for 58 948 Spridgets 6
R Value of rebuilt 1275 Engine, new clutch & rib trn Spridgets 6
Merlin63Tr4 TR4/4A Alternator or alternator in a generator case? Triumph 4
BN6_2197 BN6: How to case spikes of the screws of the door panels Austin Healey 17
John Turney Getting Speedometer out of the Case Austin Healey 6
pbraun For Sale Free 948 and smooth case Spridgets Classified 0
K TR2/3/3A Dismantling Speedometer...getting the odometer pin past the case??? Triumph 2
F Ribbed case tranny in 948 bugeye Spridgets 2
F Wanted Smooth case trnny Spridgets Classified 6
6 Spridget Radio/Speaker Case Spridgets 4
jdubois GT6 Driving the mainshaft bearing into the gearbox case. Triumph 5
Jim_Gruber 210 Tranny Case Mods started this evening Spridgets 15
R Wanted First Motion Shaft for a Austin Healey 3000 Centershift case Austin Healey Classifieds 0
C TR2/3/3A Transmission case ID Triumph 3
B Tar case glass mat batteries Austin Healey 8
mailbox General MG In case anyone needs a project or parts MG 0
Rhodyspit75 General TR Just in case you're not on my Christmas card list. Triumph 3
M Smooth case front cover Spridgets 9
T Basket case BJ8 values Austin Healey 10
NutmegCT In case you need one - Other Cars 1
M Smooth case gearbox in early MKII Sprite? Spridgets 23
apbos Awakening the Smooth Case Transmission Spridgets 7
I Smooth case transmission help please Spridgets 11
M crank case vent pipe Austin Healey 11
rkep01 Question about front cover on smooth case trans Spridgets 5
L How to repair cast aluminum transmission case Spridgets 26
K TR2/3/3A TR3A...Tighten Diff Case Bolts? Triumph 5
tahoe healey Ken's case Austin Healey 1
HerronScott Alternator in generator case project? Triumph 2
TexasSprite Tach Case Interior Colors MG 3
TexasSprite Tach Case Interior Colors Spridgets 12
M Seeking 3.9 or 3.7 diff case or just gears Spridgets 3
B TR2/3/3A 57 TR3 Newbie...No spark? Basket case Triumph 31
bgbassplyr In case you missed British Motor Corp 1
2wrench Help repairing stripped hole, rear overdrive case. Triumph 8
EVSpriteGuy Oil for 1275 ribbed case tranny??? Spridgets 1
lbc_newbie Proper crank-case venting with mods - 78 Midget Spridgets 33
jlaird In case you wanted to know-rockerarms Spridgets 2
Z MGA MGA Basket Case Value? MG 9

Similar threads