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 288 of 319

TM 9-2520-238-34

REPAIR HYDRAULIC MASTER BRAKE CYLINDER — Continued

0031 00

SET RELIEF VALVE PRESSURE

1.

Install pressure gauge in output well of housing (1).

2.

Fill housing (1) with hydraulic ﬂuid and install new gasket (18) and ﬁller plug (19).

3.

Apply pressure at pushrod end and turn adjusting screw (15) until relief pressure is 100-130 psi (69-90 kPa).

4.

Remove pressure gage and drain hydraulic ﬂuid from housing (1).

5.

Install new gasket (20) and vent plug (21) on relief valve (9).

6.

Install new protection bellows (22) on housing (1).

7.

Install instruction plate (23) on vent plug (21) with new lockwire (24).

0031 00-8