TM-5-2350-377-13-P

ARMORED COMBAT EARTHMOVER (ACE), M9

TECHNICAL MANUAL; OPERATOR AND FIELD MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST SUPPORTING THE HYDRAULIC BLADE FOLDER-TRACK TENSIONER

JUNE 2012

  TM-5-2350-377-13-P - Page 253 of 404

GENERAL HYDRAULIC SYSTEM REPAIR METHODS - Continued
RELIEVING HYDRAULIC PRESSURE - Continued
CAUTION
Do not apply sealant to the first threads of fittings. If sealant enters into the hydraulic system,
it may cause components to fail.
2.
National Pipe Thread (NPT). This thread is commonly found in hydraulic systems. It differs from other fittings
in that it is tapered. In order to obtain a proper seal with this thread, you must use a sealant. The sealant should
be applied to the male fitting (Figure 1). Torque value guide in this work package, is NOT to be used.
M0124HBF
NOTE TAPER
DO NOT APPLY
SEALANT TO
FIRST THREAD
Figure 1.
National Pipe Thread (NPT).
3.
37-Degree Flare. The 37-degree flare termination has a male straight thread that mates with a female straight
thread. The sealing surface for this termination is the angled nose at the end of the male fitting. This nose
mates with a similar surface in the female 37-degree flare fitting (Figure 2). These sealing surfaces must be
free of nicks and scratches in order to seal properly. If nicked or scratched, item must be replaced. For torque
requirements, see guide at end of work package.
M0125HBF
SEALING
SURFACE
SLEEVE
NUT
Figure 2.
37-Degree Flare.
TM 5-2350-377-13&P
0051
0051-3


Back to Top