**ON A/C ALL
3. Job Set-up
__________
Subtask 28-16-42-941-056
A. Safety Precautions
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
(1) You must obey the fuel safety procedures (Ref. TASK 28-00-00-910-001) when you do work on the fuel system.
(2) Make sure that the safety barriers are in position.
Subtask 28-16-42-860-053
B. Aircraft Maintenance Configuration
(1)
Make sure that the applicable fuel tank is defueled (Ref. TASK 28-25-00-650-001).
(2)
Make sure that the remaining fuel has been drained from the applicable fuel tank (Ref. TASK 28-25-00-650-003).
(3)
Make sure that the access platform is below the applicable zone 470(480).
(4)
Make sure that the applicable access panel is removed:
-
FOR 122QM
471BL
-
FOR 122QM
482BR.
4. Procedure
_________
**ON A/C 001-049, 051-099, 101-105, 151-158, 201-210, 301-399,
(Ref. Fig. 401/TASK 28-16-42-991-001) R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499, Post SB 28-1103 For A/C 001-049,051-099,101-105,151-158,201-210, (Ref. Fig. 401A/TASK 28-16-42-991-001-A)
1EFF : ALL 1 28-16-42Page 409 1 1 Aug 01/05 1 1 1CES 1R **ON A/C 001-049, 051-099, 101-105, 151-158, 201-210, 301-399,
Subtask 28-16-42-420-052
A. Preparation for Installation
(1)
Clean the component interfaces and the adjacent area with a MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS (Material No. 11-026).
(2)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(3)
Do an inspection of the component interface and/or the adjacent area.
(4)
Lubricate the new O-ring (1) and the new seal (8) with FUELS (Material No. 01-001) or COMMON GREASE (Material No. 04-012).
Subtask 28-16-42-420-050
B. Installation of the Fuel Recirculation Check-Valve
(1)
Install the new O-ring (1) on the check valve (2).
(2)
Remove the blanking caps from the disconnected lines.
(3)
Attach the check valve (2) to the mounting block and install the new tab washers (6) and the bolts (7).
(4)
Bend the ends of the tab washers (6) to lock the bolts (7).
(5)
Install the new seal (8) between the check valve (2) and the flange then install the washers (9), the bolts (10) and the plates (11). Safety the bolts (10) with MISCELLANEOUS (Material No. 19-010).
(6)
Connect the bonding strip (4) to the bonding lug and install the bolts (3) and the nuts (5) (Ref. TASK 20-28-00-912-004).
R 1EFF : 001-049, 051-099, 101-105, 151-158, 1 28-16-42Page 410 1201-210, 301-399, 1May 01/05 1 1 1CES 1
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499, Post SB 28-1103 For A/C 001-049,051-099,101-105,151-158,201-210, Subtask 28-16-42-420-052-A
A. Preparation for Installation
(1)
Clean the component interfaces and the adjacent area with a MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS (Material No. 11-026).
(2)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(3)
Do an inspection of the component interface and/or the adjacent area.
(4)
Lubricate the new O-ring (1) and the new seal (9) with FUELS (Material No. 01-001) or COMMON GREASE (Material No. 04-012).
Subtask 28-16-42-420-050-A
B. Installation of the Fuel Recirculation Check-Valve
(1)
Install the new O-ring (1) on the check valve (2).
(2)
Remove the blanking caps from the disconnected lines.
(3)
Attach the check valve (2) to the mounting block and install the new tab washers (7) and the bolts (8).
(4)
Bend the ends of the tab washers (7) to lock the bolts (8).
(5)
Install the new seal (9) between the check valve (2) and the flange then install the washers (10), the bolts (11) and the plates (12). Safety the bolts (11) with MISCELLANEOUS (Material No. 19-010).
(6)
Connect the bonding strips (4) and (5) to the bonding lug and install the bolts (3) and the nuts (6) (Ref. TASK 20-28-00-912-004).
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