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(EA) JUN 02
61 - Engine mount
62 - Bolt
63 - Reinforced silent-block
64 - Engine bracket
65 - Spacer
66 - Silent-block
67 - Wide washer
68 - Washer
69 - Nut
70 - Cotter pin
Power plant - Removal / Installation
Figure 406A - "LORD" silent-blocks
ABAA
Validity : S / N 1 - 9999 71-00-00Page 413
(EA) JUN 02
PAGE INTENTIONALLY LEFT BLANK
ABAA
Validity : S / N 1 - 9999 71-00-00Page 414
(EA) JUN 02
COWLING
DESCRIPTION AND OPERATION
1. GENERAL
The cowling is the part of the system made up of the removable panels which surround the power plant. The main elements are :
- the upper engine cowling 121,
- the lower engine cowling 131,
- the engine bulkheads.
2. LOCATION (Figure 1)
COMPONENT QTY AREA ACCESS DOOR REFERENCE
Upper engine cowling 121 1 100 / 71-10-01
Lower engine cowling 131 1 100 / 71-10-01
Engine bulkheads 6 100 121 / 131 71-10-02
3. DESCRIPTION
A. Engine cowlings
The engine cowlings ensure an aerodynamic air-flow around the engine, the routing of air for the cooling system, the air intake for air conditioning and the supply of air to the engine for the air / fuel mixture.
The engine cowl is a laminate cantilever structure, secured to the firewall by screws and made of two elements :
- the upper engine cowling 121, fitted with an inspection door provided to check oil level and which can be fitted with other doors as an option - refer to 06-30-00,
- the lower engine cowling 131, fitted with incorporated air intakes and which can be fitted, as an option, with inspection doors - refer to 06-30-00.
Both cowlings, secured to each other with 1/4 turn fasteners, are completely removable without requiring removal of the propeller.
B. Engine bulkheads
The engine bulkheads are used to route the cooling air around the cylinders and the alternator cooling air. They are located around the cylinders.
Engine and accessories cooling is provided by a downwards airflow. Air penetrates through holes located on the cowling, on each side of the propeller cone, is guided around the engine by airproof deflectors, then conducted to two air outlets located on the lower cowling.
ACAA
Validity : S / N 1 - 9999
Page 1
71-10-00
(DA) JUN 02
Cowling - Identification and location of components
Figure 1
ACAA
Validity : S / N 1 - 9999 71 10-00Page 2
(DA) JUN 02
ENGINE COWLINGS
REMOVAL / INSTALLATION
1. REMOVAL OF ENGINE COWLINGS (Figures 401 and 401A)
A. Tools and consumable materials
- Adhesive (TB 08-936)
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本文链接地址：TB20 MAINTENANCE MANUAL 71 动力装置 TB20飞机维护手册(9)
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