Defender master cylinder woes

[pkarlstedt]

I'm having a hard time trying to find a seal kit for the master break cylinder of a -89 Defender 110

First I tried with the VIN code: FA424032 -> seal kit RTC3387. But that didn't fit. The seals were too tight and there was no chance of getting the washers in place.

Then I tried with the master cylinder number: Girling 74660213 -> Series III master cylinder, repair kit AEU1047. But that didn't fit either. Now the seals and washers were a bit too large.

What to try next?

A couple of photographs:

Girling 74660213 is my best guess. I tried to Google with other possible numbers but only that string returned hits that made sense.

Inner diameter of the washers seated behind the spring-retained seals is 17 mm / 0.67" and outer diameter 23.5 mm / 0.9". Diameter of the cylinder end that goes into the servo is 40 mm / 1.57". Distance between brake pipes is 84 mm / 3.3". Length of the whole (assembled) unit from the surface seated against the servo to the back end is 185 mm / 7.28".

The text on the grey strap around the cylinder unit has become almost impossible to read. With a good deal of faith and imagination one could read something like 66391 38162 01RZ.

Here is something about the information on that strap:

http://forums.lr4x4.com/index.php?act=ST&a...ost&p=63748

Could that be relevant in this case?

[western]

Try master cylinder kit LR part number AEU3015 upto chassis number HA901219, just checked on Craddocks website here select 90/110 in first box, brake system in second box & AEU3015 in the third search box then click go

Edited August 14, 2006 by western

[Les Henson]

I think the internals are the same throughout. I have a couple of seal kits down the shed - I'll look at them in the morning.

I did a tech thread on the master cylinder for a 1990 90, I don't know if the 90 and 110 would be different.

Les.

[western]

EPC shows different part numbers for 90 & 110. also shows different part numbers for the rear drum brake cylinders must be a larger capacity on 110/130 models to cope with the vehicle weight increase.

[pkarlstedt]

EPC shows different part numbers for 90 & 110.

Thank Western,

What are the part numbers for 90 and 110?

- paul

[western]

Thank Western,

What are the part numbers for 90 and 110?

- paul

for both 90 & 110 use the same repair kit upto the chassis number mentioned above.

[Happyoldgit]

This is a recent one for me too as the cylinder on my 127/130 started to get a bit spongey so I replaced it about a month ago. Theere was a changeover in the 1990 models.

[Mo Murphy]

Wouldn't it be easier just to change the master cylinder ?

Mo

[western]

Wouldn't it be easier just to change the master cylinder ?

Mo

YUP, a lot easier & then you can be sure there's no internal bore wear to worry about.