Maintenance Manual

CHAPTER I
1.1 PRESENTATION
The Aimpoint CEU™ (Concealed Engagement Unit) is a rugged, patented opti-
cal accessory, developed for military and law enforcement use in conjunction
with an Aimpoint® red dot sight.
The primary application for this product is for firing from behind obstacles and
shelter, without giving away your position.
The CEU should be used with either the CEU High or Low Rise Ring to give
the optimal height for the line of sight (optical axis) of your weapon. Whether
you use an Aimpoint sight with or without a spacer, the CEU can be matched to
fit the height of your red dot sight. The CEU ring can be mounted to any MIL-
STD 1913 (Picatinny) weapon rail using the Aimpoint TwistMount™ base.
1.2 SPECIFICATION AIMPOINT CEU
Optical System
Operating Principle: Two mirrors, reflective device, for true target view
Optical Magnification: 1X, unlimited eye relief
Clear Aperture: 25 mm diameter “see through”
Optical Coating: Anti reflex coated protection elements and high
reflection coated mirrors for maximum
transmission, NVD compatible
Optical Signature: The unit does not influence forward optical
signature
Physical Specifications
Dimensions
Length: 90 mm (3.5”)
Width: 115 mm (4.5”)
Height: 40 mm (1.6”) CEU only
, detached from the CEU
Rise Ring and TwistMount base
Height of optical axis: 30 mm (1.2”) or 40mm (1.6”) alternatively over
top surface of the Picatinny Rail
CHAPTER II
OPERATION UNDER NORMAL CONDITIONS
2.1 INSTALLING THE CEU ON A WEAPON
WARNING: Insure the Weapons should be unloaded and made the
safety selector is in the ”safe” position before attempting to install,
remove or perform maintenance on the CEU attachment or mounts.
2.1.1 The CEU attachment is designed for installation on most types of
weapons which have a MIL-Std 1913 (Picatinny) Rail.
2.1.2 Installing the Aimpoint CEU on the weapon
Mount the CEU on the rail behind your Aimpoint Sight using the Bolt
Nut (3). Note: Leave enough space between the CEU and the sight
to provide clearance when mounting and dismounting the CEU on the
TwistMount Base (2).
Verify that the TwistMount Base (2) is correctly positioned and that the
recoil stop fits into a groove on the Picatinny Rail.
The Bolt Nut (3) shall be firmly tightened but do not over tighten (finger
tighten the nut, then tighten an additional ¼ - ½ turn using a wrench).
If an Aimpoint Sight is used with a spacer, the CEU High Rise Ring (5)
shall be used.
The Aimpoint Sight and the CEU should be on the same optical axis.
Rotation around optical axis: ±130°, measured from CEU pointing
vertically upwards, as reference
Mass: 130 grams (4.6 oz), CEU only, separated
from the TwistMount.
Low Top ring 35 grams (1.2 oz)
High Top ring 55 grams (1.9 oz)
TwistMount base part 60 grams (2.1 oz)
Material Housing: High strength glass reinforced polymer, grey,
non-glare finish
Material Cover: Rubber, black, non-glare finish
Material Ring: Extruded, high strength aluminum, anodized
Material TwistMount: Extruded, high strength aluminum, anodized
Radioactive Materials: None (Tritium 0%, Thorium 0%,
Thorium Fluoride 0%)
Hazardous Materials: None (Mercury 0%)
Environmental Specifications
Temperature Range, Storage: -45°C to +71°C (-50°F to +160°F)
Temperature Range, Operation: +5°C to +55°C (41°F to +131°F)
instantaneous.
Humidity: 95% at 20°C (68°F) to 50°C (122°F),
cycling
Immersion: 25 m (80 ft.)
Shock: 3 x 500 G 0.7-1.1 ms
Vibration: XYZ: 10-30 Hz: 3 mm, 30-150 Hz: 5.75 G for
30 minutes
Chemical Resistance: Materials not affected by cleaning chemicals,
lubricants, oil or insect repellants.
Mechanical Interface
Mount: Mount on MIL-STD 1913 Rail System
“Picatinny Rail”, using the Aimpoint
TwistMount
Maintainability Two o-rings (7) shall be kept lubricated to
enable easy attachment/detachment of the
CEU from the mounting Ring (Fig.3) and
easy rotation of the CEU within the ring
(Fig.1).
1) Locking bar
2) TwistMount base
3) Nut
4) CEU Low Rise Ring
5) CEU High Rise Ring
6) CEU
7) O-ring (2 pcs)
1.3 LOCATION OF COMPONENTS
See figure below