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 TM 55-1905-220-14-11
5-116. REMOTE MAGNETIC HEADING COMPASS (RMHS)- MAINTENANCE
INSTRUCTIONS (Continued)
LOCATION
ITEM
ACTION
REMARKS
ADJUST-CALIBRATION (Cont)
(c) With a vehicle aligned to magnetic 000-degree heading, adjust the NS adjustment screw, to obtain 000-
degree indication on the Heading Indicator.
(d) Align the vehicle to magnetic 090-degree heading and adjust EW adjustment screw to obtain 090-degree
indication on the Heading Indicator.
(e) Align the vehicle to magnetic 180-degree heading and adjust NS adjustment screw to remove one-half of the
error indicated by the Heading Indicator.
(f) Align the vehicle to magnetic 270 degree heading and adjust EW adjustment screw to remove one-half of the
error indicated by the Heading Indicator.
(g) Align the vehicle to magnetic 000-degree heading and adjust O adjustment screw to obtain 000-degree
reading on the Heading Indicator.
(h) Align the vehicle to magnetic 180-degree heading and adjust O adjustment screw to remove one-half the
error indicated by the Heading Indicator.
(i) Align the vehicle to magnetic 45-degree heading and adjust the 45-degree adjustment screw to obtain a 045-
degree indication on the Heading Indicator.
(j) Align the vehicle to magnetic 225-degree heading and adjust the 45-degree adjustment screw to remove one-
half of the error indicated by Heading Indicator.
(k) Repeat steps (c) thru (j) as necessary to optimize the adjustment.
(l) Install the Heading Indicator and secure with 4 screws.
5-1302
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