TM-9-2350-311-10
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; OPERATOR’S MANUAL
NOVEMBER 1994
TM-9-2350-311-10 - Page 583 of 775
TM 9-2350-311-10
Change 4
5-51
5-5
FUZES — CONTINUED
d.
Fuze Assembly — Continued
WARNING
When screwing the projectile spotting charge onto the rear of the M577 series fuze, ensure
that the shoulder of the projectile spotting charge is seated squarely against the shoulder of
the fuze. An improperly seated charge could cause a malfunction causing possible bodily
injury.
CAUTION
When assembling the projectile spotting charge to a fuze, be careful not to damage threads.
If binding occurs, consider the charge unserviceable and report it for disposition. If binding
has occurred, reinspect the fuze to ensure it is still serviceable.
2
Special preparation for the M577 series fuze includes inspecting the fuze setting. The fuze will be
considered unserviceable if the fuze setting is not between
•
93.5 and
•
95.5, the fuze shows signs of
damage, or the window is blackened or sooty inside.
5-6
FUZE SETTING
The following procedures apply to all authorized fuzes. Fuze–setting tools and procedures are listed in Table 5-2.
Table 5-3. Fuze, Fuze–Setting Tools, and Procedures
Fuze
PD
MT
MTSQ
PROX
ET
MOFA
MK399
M557
M572
M739
SERIES
M565
M564
M501
SERIES
M577
SERIES/
M582
SERIES
M732
SERIES
M728
M514
SERIES
M762
SERIES
M767
SERIES
SETTER
PROCEDURE # /
PARAGRAPH
X
X
X
Fuze–
setter,
wrench,
M18
1/0-4a.
X
M27
2/0-4b.
X
M27
3/0-4c.
X
X
M34
4/0-4d.
X
M35
5/0-4e.
X
X
None
6/0-4f.
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