TM-9-2520-238-34

M113A1 FOV, M113A2 FOV, M548 AND M548A1

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL; RIGHT ANGLE DRIVE, COOLING FAN; GEARCASE, TRANSFER; DRIVE ASSEMBLY, FINAL; DIFFERENTIAL, STEERING CONTROL; BRAKE, SINGLE DISK; CYLINDER ASSEMBLY, HYDRAULIC BRAKE

TM-9-2520-238-34 - Page 286 of 319

TM 9-2520-238-34

REPAIR HYDRAULIC MASTER BRAKE CYLINDER — Continued

0031 00

7.

Insert screwdriver through opening in housing (1) and apply enough pressure to keep assembled parts in place.

8.

Install new end plug seal (2), new gasket (3), new spring, (4) new check valve (5), and new check valve seat (6) in

housing (1). Secure end plug (7). Tighten plug to 80-95 lb-ft (108-129 N•m) torque. Use torque wrench (WP 0033 00,

Item 42).

9.

Install metering needle (8) in relief valve (9). Secure with new relief valve disk (10), new spring (11), and new cotter

pin (12).

10. Install piston (13) and spring (14) in relief valve (9).

11. Install adjusting screw (15) until one screw thread shows in relief valve (9).

12. Install new gasket (16) and relief valve (9) on housing (1). Tighten relief valve to 204-240 lb-in (23-27 N•.m) torque.

Use torque wrench (WP 0033 00, Item 41) and face wrench socket (17).

0031 00-6