TM 1-1670-260-12&P
0016 00
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CAUTION
To prevent damage to equipment, ensure OH-58 sight
wedge is properly installed.
(4) Verify that the sight wedge is installed properly by slowly trying to tilt the MMS forward with a hand still
positioned on top of the MMS. If the sight wedge is properly installed the MMS will not tilt forward.
(5) Once sight wedge is properly installed, loop the lanyard attached to the sight wedge around the MMS
pedestal and secure the wire snap back onto the lanyard,
e. Install crossbar (6) and attach slings (1) through (4) and (7) through (10) to crossbar as follows:
(1) Assemble crossbar as follows: (Figure 3)
CAUTION
The crossbar assembly is assembled on the MMS.
Maintain control of crossbar while assembling and
hooking up sling crossbar.
(a) Place main member of crossbar assembly on top of MMS with the foam side down.
(b) Securely holding crossbar assembly in place, insert each tube assembly into a cavity of the main
member aligning the TOP/BOTTOM arrows of the tube assembly with the main member cavity.
(c) Secure each tube to the main member using the quick-release pin at that station of the main
member.
Figure 3. Crossbar Assembly
(2) Balance the crossbar assembly on the top of the MMS by placing one hand on top of the center of
the crossbar assembly. Orient crossbar assembly tubes to align with main rotor blades.
(3) Attach green/white slings (1) through (4) to crossbar assembly with free hand as follows:
(a) Grab both sling eyes from the green/white sling (1) at the 2 o’clock main rotor blade (View B) and
snap them into the corresponding sling lug located at the end of the crossbar assembly tube.
(b) Grab sling eyes from the green/white sling (2), View A, at the 4 o’clock main rotor blade (View B)
and snap them into the corresponding sling lug located at the end of the crossbar assembly tube.
(c) Grab sling eyes from the green/white sling (3), view A, at the 8 o’clock main rotor blade (View B)
and snap them into the corresponding sling lug located at the end of the crossbar assembly tube.
(d) Grab sling eyes from the green/white sling (4), View A, at the 10 o’clock main rotor blade (View B)
and snap them into the corresponding sling lug located at the end of the crossbar assembly tube.
0016 00-7
