• 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)
Tips
Tips

79 Midget Clutch issues

George P

Freshman Member
Country flag
Offline
Hi all,

I'm finding it very difficult to select gears, i.e 4th down to third or even engaging any other gear. Clutch pedal flat on the floor.

I use a Gunsons auto bleed kit (uses tyre air) and bled the system at the slave cylinder. I got some air out and thought that was it. Sadly not.
Both the slave and the master cylinders have been changed,
Linkages have been checked and not found elongated.
The engine was removed last month but the clutch pressure plate and bearings were not worn or damaged so I did not replace them.
This problem existed before the engine was removed.
Lots of gear crunching going on and I'm afraid I may do some damage to the train if I don't get this sorted.
I have noticed that the MGOC spares have identified that the master cylinder can be Identified with two concentric rings but I cant find them on mine.
2 pictures attached. One is the removed master cylinder the other is as fitted. Maybe I should refit the original one as it wasn't faulty after all. (New seal kit of course()
Any help would be great.
IMG_2612.JPG
IMG_2611.JPG
 

Bayless

Yoda
Silver
Country flag
Offline
Hi George. I don't have enough experience with these things yet to be much help. I do understand that bleeding the clutch can be quite difficult thought. We have folks here who I'm sure can be a lot more help than I am.
 

JPSmit

Moderator
Staff member
Silver
Country flag
Offline
George, welcome to the wonderful world of 1500 ownership!

two things.

1. Did you replace the clutch line? I did a few years ago - I did - it took me a summer of trying to bleed the clutch before I realized the ends of the new line were cr*p and not seating properly letting in air - sadly many replacement parts have worse and worse tolerances due to being jobbed out to the lowest bidder. I went back to the original ends and found a new hose and all was much better.

2. The 1500 clutch line curves higher than the master cylinder making it very easy to get a bubble at the top of the circuit. I have actually discovered that if you disconnect the Master cylinder, hold it higher than the hose and slowly pump the cylinder (use a screwdriver in the holes and gloves to save you hand) you can bleed it in seconds.

good luck and questions are always welcome!
 

sparkydave

Jedi Knight
Country flag
Offline
Ditto on what JPSmit said on the clutch line. I replaced the clutch and hydraulics on mine, and yes, bleeding the clutch is a pain. I found if I stomp hard and fast on the clutch a few times, the bubble stuck in the hose will either burp out of the master or go down in the slave where you can bleed it again. I used a Mityvac myself. One thing I learned is if you unbolt the slave cylinder, the pushrod makes a tight seal with the dust boot on the end, and when you put it back, you WILL have to bleed the clutch again after you work the clutch a couple times. That pocket of air inside the dust boot will find its way into the fluid.

My original master cylinder gave up the ghost a while back and sprung a leak. I have the aftermarket one like you have now, but it was no big deal bleeding it.

When I replaced my clutch, I had ordered the aftermarket brand (can't remember the name now). Had a terrible time because apparently the pressure plate was for a different application, it was still very firmly engaged even though the hydraulics were working. When I went with the OEM Borg & Beck clutch it worked fine.
 
OP
G

George P

Freshman Member
Country flag
Offline
Thanks JP, I think I'll give that a go. I cannot find a remote bleed kit to fit the 1500MG anywhere!!! If I can source the end fittings I can probably get one made up.
Thanks for the advice.
 

JPSmit

Moderator
Staff member
Silver
Country flag
Offline
Thanks JP, I think I'll give that a go. I cannot find a remote bleed kit to fit the 1500MG anywhere!!! If I can source the end fittings I can probably get one made up.
Thanks for the advice.
can I suggest starting with trying to get the Master Cylinder higher than the hose before you take anything apart - as I am typing this I recall that some people jack up the corner of the car higher than the hose - but even to disconnect the MC (which isn't hard) and leave it overnight higher than the hose - the air should <should> leave on its own.
 
OP
G

George P

Freshman Member
Country flag
Offline
Thanks JP, couple of pics attached. I removed the master cylinder and raised it well above the pipeline and then used the ezibleed. Lots of bubbles came out. I also checked the slave, the bleed nipple is higher than the feed not a great deal higher but better so I left it as it is. Now for a test run.
IMG_2621.JPG
IMG_2622.JPG
 

JPSmit

Moderator
Staff member
Silver
Country flag
Offline
sounds promising - let us know!
 
Similar threads
Thread starter Title Forum Replies Date
Jer refresh my foggy memory - replacing clutch in my 67 Midget Spridgets 1
Jer Confirming the best choice for clutch / release bearing for my 67 Midget Spridgets 2
A For Sale Sprite/Midget 1275 clutch cover. Austin Healey Classifieds 0
B MG midget Clutch slave cylinder Spridgets 4
M General MG Midget clutch bleed - engine out MG 3
AngliaGT Early '74 Midget - Clutch Master Cylinder Removal Spridgets 7
S General Tech MIdget Clutch- Totally stumped. MG 2
S MIdget Clutch- Totally stumped. Spridgets 6
R 1500 midget clutch inspection? Spridgets 3
G 79 midget 1500 clutch? Spridgets 5
E Clutch issue with 1973 Midget, moved from MG board Spridgets 16
E T-Series 1973 MG Midget, Where to Start with a clutch issue MG 8
A MIDGET 76 1500 CLUTCH SLAVE CYLINDER Spridgets 1
P weird thing with midget clutch pedal Spridgets 3
P clutch adjustment on 79 midget? Spridgets 6
Steve P. Midget [1500] clutch threshold? Spridgets 4
Steve P. Help! '78 Midget clutch & light switch Spridgets 13
R spitfire OD in MG midget, trany & clutch question Spridgets 4
D 79 Clutch Midget 1500 eng. Spridgets 7
G Midget 1500 Water Pump / Fan Clutch Question Spridgets 6
G 1500 Midget Clutch & Transmission Question Spridgets 7
tony barnhill '63 Midget Clutch Spridgets 9
G Midget's Stuck Clutch Woes!!! Spridgets 10
G 67 Midget Clutch travel.. one more time... Spridgets 3
D T-Series 79 Midget clutch MG 15
7 T-Series 1976 midget clutch problems, please help me. MG 17
C T-Series Midget clutch slave where? MG 5
M T-Series 74 Midget Clutch Question MG 2
K T-Series clutch system on a midget MG 9
TRopic6 For Sale Midget MkIII (GAN 5) Handbook, Door switches, Wiper blades Spridgets Classified 0
D Is it a 1965 or a 1966 MG Midget? Spridgets 2
G 79 Midget 1500 overheating Spridgets 2
G General MG Leaking Fuel on twin HS4's 1500 MG Midget MG 5
O Ignition switch / steering lock replacement in a '78 midget Spridgets 4
M Midget runs inconsistently Spridgets 7
S 1972 MG Midget Mk III Project Car for sale Spridgets 5
B COMPLETE DROP-IN Rebuilt 1975/6 MG Midget 1500 engine PLUS rebuilt Spitfire Overdrive trans NEVER INSTALLED Spridgets Classified 0
BJ8Healeys Cigar lighter for '73 MG Midget MG Classifieds 4
Gearhead Midget parts for sale Spridgets Classified 0
Gearhead Midget seats for sale Spridgets Classified 0
S For Sale Early Sprite & Midget Speedometer/Tachometer/Generator etc. Spridgets Classified 2
JPSmit Electric Midget Spridgets 1
skystryd Idea Time 79 Midget Spridgets 2
BJ8Healeys For Sale Midget/Sprite nose section - used [Moss Motors P/N 455-145] Spridgets Classified 0
Ljohns New Midget/Sprite Fuel Tank Austin Healey Classifieds 1
M General MG Midget MK1 windshield replacement MG 2
D For Sale MG Midget for sale Spridgets Classified 2
K Disc Brake Conversation to MK1 Midget Spridgets 2
M 1972 Midget Engine Issues Spridgets 10
M General MG 1972 Midget cylinder pitting MG 19

Similar threads

Top