MIL-DTL-9398D
WALL OR PLUG
TYPE AND
METHOD OF RETAINING
OPTIONAL
OIL SEAL TO BE PROVIDED
TYPE OF SEAL OPTIONAL
+0.375
0.750 -0.125
0.750 ± 0.020
0.656 MIN FULL THREAD
0.938
0.938
BASIC
BASIC
0.281 MIN RAD
0.050 MAX ROUND OR CHAMFER
0.030 MAX RAD
0.125 MIN FREE FROM ENGINE
0.938
PARTS EXCEPT SHAFT
BASIC
0.360 MAX DIA X 60°
MACHINING CENTER PERMISSIBLE
0.260 MAX
DIA
0.115 +0..000
0 060
-
SHAFT HARDNESS
0.938
ROCKWELL C32 MIN
BASIC
0.030 X 45°
OPTIONAL
CONSTRUCTION
0.250 ± 0.002
1.500 +0..000 TO 0.125 MIN DEPTH,
0 002
-
SQUARE
FULL LENGTH OF SQUARE SOCKET
0.500 MIN
SHALL RUN CONCENTRICALLY WITH
PILOT DIAMETER AND SHALL BE
ROTATION OPTIONAL,
GASKET AS3491-01
SQUARE WITH MOUNTING FACE
CLOCKWISE PREFERRED
WITHIN 0.008 FULL INDICATOR READING
FACING ENGINE PAD
THREAD 0.250-28 UNF-3A
SPECIFICATION MIL-S-7742, 4 STUDS.
ALL EXPOSED PORTIONS SHALL BE
WITHIN 0.007 OF BASIC POSITION IN
RELATION TO 1.500 PILOT DIAMETER
Notes:
1. Strength: Shall be capable of driving continuous torque load of 7 inch-pound (inlb) at any speed. The
drive shall withstand a static torque of 50 inlb without failure or permanent deformation.
2. Oil leakage out of this drive should not exceed 1 cubic centimeter (cc) per hour.
3. Dimensions are in inches. Unless otherwise specified, tolerances: decimals ±0.010, angles ±2 degrees.
4. Pad outline as dimensioned is a basic minimum area requirement.
FIGURE 1. Drive - type XV engine accessory.
3.4.1 Maintenance. The design of the generator shall be such as to accommodate to the
greatest possible extent, disassembly, reassembly, and service maintenance using those tools and
items of maintenance equipment that are normally available as commercial standards.
3.4.2 Oil seal. The generator shall be provided with an oil seal at the drive shaft end as
near the face of the mounting flange as possible.
3.4.3 Drain holes. The generator shall be provided with four drain holes as shown on MS25038.
6
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business