A
Aiming circle
care and preservation		154
description of components		144-149
operation		149-150
test and adjustments		150-154
Ammunition
authorized rounds		87
care, handling and preservation		103
classification		86
description of rounds		87-100
field report of accidents		103-104
firing cables		86
German abbreviations and terminology of ammunition items		104-108
packing		100-102
interchangeability of ammunition items		102
precautions in handling captured ammunition		102-103
preparation for firing		87
tropical ammunition		102
Angle of site mechanism		110
Assembly of breech mechanism and breech actuating mechanism		85
Authorized rounds of ammunition		87
Auxiliary director 35
description		133
operation		133-138
Azimuth and elevation indicators
description		138-140
operation		140
Azimuth tracker, operation		129
B
Battery commander's telescope
care and preservation		162
description		157
operation		157-162
test and adjustments		162
Bogies
description and functioning		39
inspection and adjustment		74
Bore sighting		117-118
Bottom carriage, description and functioning		23-26
Brakes, inspection and adjustment		74-75
Breech actuating mechanism, disassembly		85
Breech mechanism
assembly		85
care and preservation		64
description and functioning		12-16
disassembly		79
inspection and adjustment		71
lubrication		64
operation		55-57
C
Care and preservation
aiming circle		154
ammunition		103
battery commander's telescope		162
filling and charging
rammer cylinder		69
recuperator cylinder		67
filling the recoil cylinder		67-69
fire control equipment		164-165
general		64
mount		64
range finder model 34		154
recoil liquid		67
Characteristics of gun and mount		4
Classification of ammunition		86
Conversion tables		176-177
Cradle, description and functioning		38
D
Data
essential translations		8
gun		4-5
mount		6-8
recoil mechanism		5-6
Deflection mechanism, description		110
Description (See also Description and functioning)
aiming circle components		144-149
auxiliary director 35		133
azimuth and elevation indicators		138-140
battery commander's telescope		157
fuze setter		142
fuzes		91-100
panoramic telescope 32		119-120
range finder model 34		154
rounds
fuzes		91-100
general discussion of		87-89
identification		89
Description and functioning
breech mechanism		12-16
firing mechanism		16-19
gun		9-12
mount
bogies		39
bottom carriage		23-26
cradle		38
elevating mechanism		38-39
equilibrators		38
leveling jacks		26
pedestal		32-33
rammer		40-41
side outriggers		26
top carriage		33-38
top carriage leveling mechanism		32
traversing mechanism		38
recoil mechanism
recoil cylinder		21-22
recuperator cylinder		20-21
Direct fire operation		118
Director, description		128
Disassembly
breech actuating mechanism		85
breech mechanism		79-83
E
Elbow telescope, description		110
Elevating mechanism
description and functioning		38-39
inspection and adjustment		71-72
Elevating the gun		55
Elevation quadrant, description		113-117
Elevation tracker, operation		129
Equilibrators
description and functioning		38
inspection and adjustment		75
F
Field report of ammunition accidents		103-104
Filling recuperator cylinder		67
Fire control equipment
aiming circle		144-154
auxiliary director 35		133-138
azimuth and elevation indicators		138-140
battery commander's telescope		157-162
care and preservation		164-165
components		119
fuze setter		142
on-carriage wiring		144
panoramic telescope 32		119-120
plotting rules		157
range finder model 34		154
stereoscopic director 36		125-133
surveying rod		157
Firing
points to observe before		57
points to observe during		58
Firing mechanism
care and preservation		64
description and functioning		16-19
inspection and adjustment		71
Firing position, placing gun in		43—55
Firing tables
conversion tables		176-177
8.8 cm FLAK 18 and 35 with 8.8 cm AP shell with base fuze		174-175
8.8 cm FLAK 18 and 36 with 8.8 cm H.E. Shell L/4.5 (Kz) with 23/28		167-173
Firing the gun		58—59
Fuze setters, description and operation		142
G
German abbreviations and terminology of ammunition items
abbreviations		104-105
German explosives		108
glossary		106-107
index numbers on German shell		107
Gun
care and preservation		64
characteristics		4
data		4-5
description and functioning		9-12
inspection and adjustment		70
malfunctions and corrections		76–77
operation		43–60
H
Hand brakes, inspection and adjustment		75
I
Inspection and adjustment
bogies		74
brakes		74-75
breech mechanism		71
elevating mechanism		71-72
equilibrators		75
firing mechanism		71
gun		70
mount		74
rammer assembly		73-74
recoil and recuperator mechanism		72-73
traversing mechanism		71
Interchangeability of ammunition items		102
L
Leveling jacks, description and functioning		26
Loading the gun		58
Lubricants, care and preservation		165
Lubrication
breech mechanism		64
gun before firing		57
Lubrication guide		61
M
Malfunctions and corrections
gun		76-77
mount		77-78
Manual cocking of percussion mechanism		17-18
Mount, gun, antiaircraft, 88-mm
care and preservation		64
characteristics		4
data		6-8
inspection and adjustment		74
malfunctions and corrections		77-78
operation		43-60
O
Oilholes, painting		61
Operation
aiming circle		149-150
azimuth and elevation indicators		140
auxiliary director 35		133–138
battery commander's telescope		157-162
breech mechanism		55-57
elevating gun		55
firing gun		58-59
fuze setter		142
loading the gun		58
placing gun in firing position		43-55
placing in traveling position		59-60
points to observe before firing		57
points to observe during firing		58
recocking		59
stereoscopic director		129-132
telescopic sight		117-118
traversing the gun		55
Optical parts, care and preservation		164-165
P
Packing ammunition
steel containers		100-102
wicker containers		102
Panoramic telescope 32, description		119-120
Pedestal, description and functioning		32-33
Percussion mechanism, manual cocking		17-18
Plotting rules		157
Power brakes, inspection and adjustment		74-75
Precautions in handling captured ammunition		102-103
R
Rammer (assembly)
description and functioning		40-42
inspection and adjustment		73-74
Rammer cylinder, filling and charging		69
Range finder model 34, description and operation		125-128, 154
Range or height reader, operation		129
Range quadrant and elevation mechanism, description		110
Recocking the gun		59
Recoil and recuperator mechanism, inspection and adjustment		72—73
Recoil cylinder
description and functioning		21-22
filling		67-69
Recoil liquid, care and preservation		67
Recoil mechanism, data		5-6
Recuperator cylinder
description and functioning		20-21
filling and charging		67
S
Side outriggers, description and functioning		26
Sighting equipment, telescopic sights with elevation quadrant for direct fire		110-118
Stereoscopic director 36 director		128
general discussion		125
operation		129-132
by telephone		132
range finder		125-128
setting up		128-129
standby settings		132-133
Surveying rod, description		157
T
Telescopic sight
description		110-113
elevation quadrant		113-117
operation		117-118
Tests and adjustments
aiming circle		150-154
battery commander's telescope		162
range finder model 34		154
Top carriage, description and functioning		33-38
Top carriage leveling mechanism, description and functioning		32
Translations, essential		8
Traveling positions, placing gun in		59-60
Traversing mechanism
description and functioning		38
inspection and adjustment		71
Traversing the gun		55
Tropical ammunition, description		102
Twist of rifling		5
U
Unloading the gun		59
W
Weight of gun		4
Wheel bearings, lubrication		61
A.G. 300.7 (6 Jul. 1943) O.O. 461 / Raritan Arsenal (3 Jul. 1943) (R) BY ORDER OF THE SECRETARY OF WAR: G. C. MARSHALL, Chief of Staff. OFFICIAL: J. A. ULIO, Major General, The Adjutant General. DISTRIBUTION: X (For explanation of symbols, see FM 21-6) RAPD 14 AUGUST 1943 PUBLICATIONS DIVISION — RARITAN ARSENAL