Renewing secondary plunger seals

12. Clean all parts with Girling cleaning fluid or unused brake fluid and place cleaned parts on to a clean sheet of paper. Inspect cylinder bore and plungers for signs of corrosion, ridges and score marks. Provided working surfaces are in perfect condition, new seals from a Girling Service repair kit may be used.

Renewing secondary plunger seals

8. Remove guide ring from mouth of master cylinder which supports primary plunger assembly and place to one side, this component is not part of master cylinder service kit and is to be refitted on assembly of unit.
9. Pull primary plunger assembly out of master cylinder.

• NOTE: The primary plunger assembly
• cannot be broken down any further and is
• serviced as a complete unit. Discard
• assembly.

10. The secondary plunger assembly will remain at 13. Remove following components from secondary bottom of master cylinder bore, plunger can be easily expelled by tapping assembly on a piece of timber until plunger appears at cylinder mouth, carefully pull plunger out of master cylinder.

secondary plunger. A. Springs B. Seal retainer C. Recuperating seal (primary cup) D. Washer E. ’L’ seal

11. If swirl tube was not expelled at same time as secondary plunger, repeat above operation to
14. Coat new seals in unused brake fluid and firstly

expel it from bottom of master cylinder bore and discard.

15. Fit washer followed by recuperating seal. Fit seal

plunger and discard:

• NOTE: A small screwdriver with end
• rounded and polished is required to
• remove ’L’ seal. DO NOT damage

fit ’L’ seal to plunger.

retainer and springs, ensure springs are correctly seated.