MWO-9-2350-311-20-2
HOWITZER, MEDIUM SELF-PROPELLED; 155MM, M109A2, M109A3, M109A4 AND M109A5
MODIFICATION WORK ORDER
APRIL 1992
MWO-9-2350-311-20-2 - Page 5 of 12
MWO 9-2350-311-20-2
10.
MODIFICATION PROCEDURES.
Elbow telescope weighs 55 pounds (24.9 kg). Gun tube
must be approximately level or in stowed position
when kingpin is removed to prevent injury to personnel
and damage to M118A2 telescope.
a.
Refer to figure 2.
Remove the M118A2 telescope as follows:
(1) Disconnect electrical connector (1) on underside of telescope (2).
(2) Support telescope (2) to prevent it from
S
liding out of mount (3).
(3) Remove kingpin (4) by turning it counterclockwise.
(4) Slide telescope (2) out of mount (3).
b. Refer to figure 2.
Install the M118A3 telescope as follows:
Elbow telescope weighs 55 pounds (24.9 kg).
Failure to
install and tighten kingpin may result in injury to
personnel and damage to M118A3 telescope when gun tube
is elevated.
When installing telescope, make sure electrical connector is
not lying on top of mount.
NOT E
Before installing telescope,
clean forward lens and eyepiece
lens using lens
(1) Slide telescope
(2) Install kingpin
paper.
(5) into mount (3). Support telescope.
(4) and tighten.
(3) Connect electrical connector (1) from M146 mount (3) to underside of
M118A3 telescope (5).
5
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