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track sliders on the outer wall of the translating sleeve.
On the lower latch beam, around the latch housings, there are
four shear pins on the left thrust reverser and four shear pin
bushings on the right thrust reverser. The shear pins fit into the
bushings when the thrust reverser is closed and latched. The
purpose of the shear pins and bushings is to align the bottom of
the thrust reversers together. If a shear pin or bushing is
missing, there would be an increase in loads and wear on the
remaining shear pins and bushings. The forward shear pin and
bushing and the aft shear pin and bushing cannot be missing.
Any missing shear pin or bushings must be replaced.
THRUST REVERSER - COMPONENT LOCATION
EFFECTIVITY
GUN ALL 78-31-00
Page 9
D633A101-GUN Feb 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
78-31-00-002
Bulb-type fire seals are mounted in metal retainer tracks on the
length of the upper bifurcation and the lower bifurcation to the
latch beam. A bulb type fire/aerodynamic seal is mounted
around the circumference of the inner wall, aft of the inner wall
v-blade. A bulb type fire seal is mounted on the inner wall lower
bifurcation of the left thrust reverser half. A bulb type fire seal is
mounted on the inner wall upper bifurcation of the left and right
thrust reverser half. When the thrust reverser is closed and
latched, the bulb type fire seals are compressed against the
metal seal depressors on the strut, the engine upper fancase,
the structure around the engine core case. The fire seals help to
contain a engine core external component fire under the inner
wall. Some of the fire seals act also act as aerodynamic seals
which close off air gaps that can cause an operational economic
penalty.
The thermal insulation blankets are installed on brackets that
are installed on the inner surface of the inner wall. Thermal
insulation blankets are mounted on the inside surface of the fan
duct cowl and upper and lower bifurcation. These blankets are a
thermal insulation and fire barrier which is necessary to keep
the thrust reverser structurally serviceable and can decrease
the damage and repair costs from a duct burst or fire. The
thermal insulation prevents fire and engine operation heat
damage to the composite inner wall of the fan duct cowl.
Rubstrips are mounted on the circumference of the torque box
as a wear surface for the fan cowl panels and the translating
sleeves.
A total of six tension latches, at the bottom of the T/R, keep the
two halves together. The tension latches are mounted in the
latch beam on the left thrust reverser half. The hooks on the
tension latches engage latch bolts that are mounted in the latch
beam on the right thrust reverser half. There are two tension
latches that are mounted together at the forward end of the latch
beam. These two tension latches are necessary to keep the vblades
engaged in the v-grooves if a fan blade out or rejected
take off event occurs.
THRUST REVERSER - COMPONENT LOCATION
EFFECTIVITY
GUN ALL 78-31-00
Page 10
D633A101-GUN Feb 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
78-31-00-002
THRUST REVERSER - COMPONENT LOCATION
THRUST REVERSER - COMPONENT LOCATION
EFFECTIVITY
GUN ALL 78-31-00
Page 11
D633A101-GUN Feb 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
78-31-00-002
Purpose
The translating sleeves have two purposes when the T/Rs are
in the stow position:
* Protect the cascades and other internal components
* Control the outer edge of the fan air exhaust flow.
The translating sleeves have two purposes when the T/Rs are
in the deploy position:
* Expose the cascades
* Move the blocker doors into the fan air exhaust flow.
Location
The T/R sleeves are aft of the fan cowl. Sliders and tracks attach
the sleeve to the structure.
Physical Description
The T/R sleeve is a composite assembly with an inner and outer
skin.
The outer skin completes the aerodynamic contour of the
engine cowls and protects internal components.
The inner skin is the outer wall of the fan duct. Blocker doors
and acoustic panels make up a large part of the inner skin.
THRUST REVERSER - TRANSLATING SLEEVE
EFFECTIVITY
GUN ALL 78-31-00
　
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