(8)
Remove the washers (3) and (12).
(9)
Remove the springs (4) and (11).
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NLG Lock Springs
Figure 401/TASK 32-21-18-991-001
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1 1 Feb 01/98
1 1
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TASK 32-21-18-400-001
Installation of the NLG Lock Springs
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific warning notice(s)
R No specific Torque Wrench : range 0.00 to 1.20 m.daN
R (0.00 to 9.00 lbf.ft) M21929 2 TENSIONING FIXTURE
B. Consumable Materials
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
Material No. 04-004 USA MIL-PRF-23827 TYPE I
SYNTH.ESTER BASED GREASE HIGH PRESSURE
(Ref. 20-31-00)
Material No. 04-022 USA MIL-PRF-81322 GRADE 2
SYNTHE.HYDROCARBON GREASE HIGH PRESSURE
(Ref. 20-31-00)
Material No. 05-047 C Z-11.904
ANTI COR. COMPOUND(HIGH TEMP.SILICONE SEALANT)
(Ref. 20-31-00)
Material No. 09-001 USA MIL-S-8802 TYPE I CLASS A
FUEL TANK SEALANTPOLYSULFIDE (Ref. 20-31-00)
Material No. 11-004A
1.1.1TRICHLOROETHANE (METHYL CHLOROFORM)
(Ref. 20-31-00)
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C. Expendable Parts
-------------------------------------------------------------------------------
FIG.ITEM |DESIGNATION |IPC-CSN
-------------------------------------------------------------------------------
1 cotter pin 32-21-17 02 -010 6 washer 32-21-17 02 -040 6 washer 32-21-17 02 -040A 9 washer 32-21-17 02 -040 9 washer 32-21-17 02 -040A 14 cotter pin 32-21-17 02 -010
R 15 cotter pin 32-21-11 06 -010 15 cotter pin 32-21-11 06A-010
R 23 cotter pin 32-21-11 06 -010 23 cotter pin 32-21-11 06A-010
D. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
32-22-00-010-001 Nose Gear Doors - Ground Doors Opening
32-22-00-410-001 Nose Gear Doors - Ground Doors Closing
32-21-18-991-001 Fig. 401
3. Job Set-up
__________
Subtask 32-21-18-860-050
A. Aircraft Maintenance Configuration
(1)
In the cockpit, on the panel 400VU, make sure that the warning notice(s) is (are) in position to tell persons not to operate the landing gear control lever.
(2)
Make sure that the doors of the nose landing gear are open (Ref. TASK 32-22-00-010-001).
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4. Procedure
_________ (Ref. Fig. 401/TASK 32-21-18-991-001) Subtask 32-21-18-110-050
A. Preparation for Installation
(1)
Clean the attachment hardware and the pins (19) and (24) with CLEANING AGENTS (Material No. 11-004A), and dry them with filtered compressed air.
(2)
Apply a light coat of SPECIAL MATERIALS (Material No. 05-047) to the threads of all the nuts, screws, bolts and pins.
(3)
Lubricate the hardware and the pins (19) and (24) with COMMON GREASE (Material No. 04-004) or COMMON GREASE (Material No. 04-022).
NOTE : Do not mix Material No. 04-004 with Material No. 04-022. You
____ can use Material No. 04-022 as an alternative to Material No. 04-004. Clean and degrease the parts before you use Material No. 04-022.
Subtask 32-21-18-420-053
B. Installation of the NLG Lock Springs
(1)
Install the TENSIONING FIXTURE (M21929) on the springs (4) and (11).
(2)
Make sure that the brackets (7) and (8) are in position.
(3)
Remove the washers (6) and (9).
(4)
Put the springs and the washers (3), (5), (10) and (12) in position.
(5)
Measure the clearance on each side and use the new washer (6) and the washer (9) to get a clearance between 0.05 mm (0.0019 in.) and 0.5 mm (0.0196 in.).
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