1.84 HYDRAULICS SINGLE BRAKE VALVE (SAFIM) -Servicing NOTE : From Machines S/No.51200472 only. Servicing is normally restricted to the replacement of seals in the brake master and brake valve modules of the valve assembly. When any cylinder bore or sliding contact surface is scored, the brake valve must be replaced. Dismantling (Brake Valve Module) 1. Remove the spring (8) and shuttle valve (7) and O-seal (6) from the brake valve module (9). 2. Remove the four O-seals (10) from the brake valve module (9). 3. Remove the grub screw (5) from the brake valve module (9). 3.
Remove the circlip (1) and extract the plug (11), sealing ring (2) and seal (3), valve (10) and spring (4) from the brake valve module (9). 4. Clean and examine the valve module (9), valve (4), shuttle vale (7) and plug (11). Assembly (Brake valve module) 1. Installation is the reverse of removal. 2. Make sure a new sealing ring (2) and O-ring seals (10), (2) and (6) are fitted. 1. Circlip 2. Sealing ring 3. Seal 4. Spring 5. Grub screw 6. O-ring seal 7. Shuttle valve 8. Spring 9. Brake valve module 10. O-ring seal 11. Plug 3. Before assembly, lightly lubricate the parts from the repair kit and the spool and sleeve with clean hydraulic oil. 4. Make sure all parts are clean before assembly.