MG-Cars.net

Welcome to our resource for MG Car Information.

Recommendations

Parts

MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG MGA - Master Cylinder 180-670

Have any of you had problems bleeding the Moss / TRW made in China master cylinder? Along with it I have the Equal clutch slave cylinder from Rock Auto. Rubber hose has also been replaced with one from Moss. All items are new. We have tried bleeding with the peddle. Also with a pressure pot from the slave to the Master. The clutch feel good and operates correct just after bleeding. First trip out of the shop shifts good. Then after about a half dozen shift it starts to grind in second. Then it will lock up in first. Rebleed the same thing will happen. The problem is now worse then when I started. Any help would be greatly appreciated.
Gary
gl krukoski

Gary

The archives are full of TRW woes, so you are not alone. In my humble opinion I would put it in the bin and buy a better quality unit such as the one made by AP Caparo.

If you are sticking with your TRW I would suggest you read some of Barney's material.

Steve
Steve Gyles

It looks to me like you are getting some air in the system....
Just because there are no obvious leaks, doesn't mean there isn't an air leak....
Double check all of your connections , and tighten with a brake-line spanner, not a regular "spanner" (open end) wrench....A regular spanner will not give the needed grip to seal the fittings...At least that has been my experience.
Once you're positive that all the connections are snug,
re-bleed the slave cylinder. Then disconnect the push rod
at the slave, and using a large clamp, push the slave rod
into the cylinder, while opening the air bleed fitting.
Air will get trapped behind the slave piston, and will lurk in there until it is pushed out.
Moss has an on-line video describing this bleed method.
Worth the effort, IMHO.
Edward
E B Wesson

This thread was discussed on 23/07/2014

MG MGA index

This thread is from the archive. The Live MG MGA BBS is active now.