540 BRAKE SYSTEM ASSEMBLY OF TMC CAUTION: Ensure that dismantled TMC child parts are clean and free from any mineral oil and dust. If a Minor Repair Kit is being used to rebuild the TMC assembly, follow the procedure as given below: 1. Remove the snap fit return spring of secondary piston and remove the primary seal. 2. Cut the secondary seal on secondary Piston taking due care not to damage the piston. CAUTION: Never use connector or sharp pin kind of tool, it may damage seal seat on the piston. 3. Mount the well lubricated secondary seal on the piston, with correct orientation of secondary piston, secondary seal, and take care there is no kink on the leap of the seal. While refitting the secondary piston, primary seal, ensure the fitment of the safety washer behind the primary seal. 4. Insert the well lubricated with fresh brake fluid, Secondary Piston Assembly (10) into the bore, with the spring end leading in to the cylinder bore. Care must be taken to guide the seals into the bore, hence avoiding any damage to the seals.
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