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A. Tools and consumable materials
- Adhesive tape (TB 08-917)
B. Procedure
1) Check engine mount (1) - refer to Page 601.
2) Check firewall condition at engine mount attachments.
3) Install engine mount (1) on the firewall.
CAUTION : BOLTS (2) ARE LONGER THAN BOLTS (5).
4) Attach the engine mount to the firewall with bolts (5) and washers (3).
5) Install and attach struts (4) with bolts (2) and washers (3) on the firewall, and with bolts (2), washers (8) and (3) and new nuts (6) on landing gear mount (7).
6) Torque bolts (2) and (5) according to "Specific cases" tightening procedure - refer to 20-00-01.
7) Install all attaching components for electrical cables, ducts, engine controls, hoses, etc., on engine mount (1) as marked during removal.
8) If removed, install the deicing fluid tank and the support on engine mount (1) - refer to 30-60-00.
9) Install the power plant - refer to 71-00-00.
ENGINE MOUNT
INSPECTION / CHECK
1. CHECK OF ENGINE MOUNT
A. Tools and consumable materials
- Surface plate
- 6 x magnifying glass
- Cleaning agent (TB 11-003)
- Clean lintfree cloths
B. External check of engine mount (Figures 601 and 602)
1) Remove the engine mount - refer to Page 401.
2) Clean the engine mount using clean lintfree cloths moistened with cleaning agent (TB 1 1-003).
3) Place engine mount (1) on a surface plate and check that each mounting plate (2) is parallel to the surface of the surface plate - max. permissible gap : 0.019 in (0.5 mm).
4) With the engine mount on the surface plate, check that, with three mounting plates (2) resting on the surface plate, the gap of the fourth one does not exceed 0.157 in (4 mm).
5) Check bores (3) :
- theoretical dimension : dia. 0.3149 / 0.3172 in (8.0 / 8.058 mm),
- max. wear dimension : dia. 0.3208 in (8.150 mm).
6) Visually inspect the engine mount for :
- chafing marks,
- corrosion,
- cracks.
7) In case of doubt concerning the presence of a crack, perform a fluorescent penetrant inspection - refer to 20-00-14, or a magnetic particle inspection.
8) Should a crack be detected on a tube, contact the manufacturer.
9) Should a defect be detected on a tube, check which type of repair is authorized - refer to Page 801.
10) Install the engine mount - refer to Page 401.
ABM
Validity : S / N 1 - 9999 71 20-00Page 601
(CA) JUN 02
Engine mount - Inspection / Check
Figure 601
Surface plate
Engine mount mounting plate flatness check
Figure 602
ABAA
Validity : S / N 1 - 9999 71 20-00Page 602
(CA) JUN 02
ENGINE MOUNT
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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(21)
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