To Dismantle/Assemble

TO DISMANTLE
Pull the dust cover towards the rear and use a pair of pliers to remove the circlip. Remove the push-rod and washer. The piston and seal will now be visible. Remove the piston, washer, piston seal and spring. Carefully remove the seal from the piston. Examine the cylinder bore. If it is smooth and unscratched, new seals can be fitted. But if the cylinder bore is uneven, fit a new cylinder. If the old seals on the piston are too large and have swelled, they have probably been contaminated with mineral oil. This is the most common fault on master cylinders. Natural rubber seals are very sensitive to mineral oil, and even small quantities may cause them to swell in time. If this is suspected, change all of the seals and flush the system with clean hydraulic fluid.





COMPONENTS OF THE CLUTCH MASTER CYLINDER
1. Housing
2. Spring with seat
3. Seal
4. Washer
5. Piston with rear seal
6. Push-rod with stop washers, Circlip and dust cover

TO ASSEMBLE
Fit the return spring and spring seat. Lubricate the piston and seals thoroughly with Wakefield Girling Rubber Grease 3, and fit the seal, washer and piston with seals.

NOTE: Fit the washer with the convex side towards the piston as shown in the figure.

Fit the push-rod into the cylinder, and then fit the washer and circlip, making sure that the circlip is in the cylinder housing groove. Refit the dust cover or fit a new cover if the old one is damaged.





Correct location of the washer

TO ASSEMBLE





1. Connect the hose from the reservoir to the cylinder.









2. Fit the master cylinder in position and fit the nuts from the interior of the car.
3. Connect the push-rod to the pedal.
4. Fit the left-hand knee shield to the underside of the fascia.
5. Connect the clutch tube, fill the system with hydraulic fluid, and bleed the system.