4. Procedure
_________ (Ref. Fig. 401/TASK 32-21-16-991-003, 402/TASK 32-21-16-991-004, 403/TASK 32-21-16-991-005, 404/TASK 32-21-16-991-006, 405/TASK 32-21-16-991-007) Subtask 32-21-16-110-052
A. Preparation for Installation
(1)
Clean the removed parts 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)
Apply a thin layer of SPECIAL MATERIALS (Material No. 05-047) to the bushes (10) and the bolts (13) but not on the threads.
(4)
Apply a thin layer COMMON GREASE (Material No. 04-022) to the pins and the washers.
Subtask 32-21-16-420-052
B. Installation of the NLG Drag Strut Assy
(1)
Install the HOISTING DEVICE (M21931) on the drag strut (7).
(2)
Install the spherical bearings (Ref. TASK 32-21-24-400-002)
(3)
Install the drag strut as follows:
(a) Install the drag strut(forestay) (7) between the two spherical bearings with the mini-hoist and the attach bar of the TOOL - R/I NLG (98D32203500000)
NOTE : The retaining plate (20) on the drag strut center pin (19)
____ can be on the left or right side of the drag strut assembly. This is because the upper part of the drag strut (forestay) is a symetrical part.
(b)
Engage the trunnion pins (15) (do not engage them fully) in the spherical bearings and put the drag strut(forestay) against one of the bearings.
(c)
On the opposite side, measure the clearance between the spherical bearing and the drag strut(forestay)(7).
1EFF : ALL 1 32-21-16Page 413 1 1 Aug 01/05R 1 1 1CES 1
Roller Figure 403/TASK 32-21-16-991-005
1EFF : 1 1R 1CES ALL 1 11 1 32-21-16 Page 414 Aug 01/05
Functional gaps Figure 404/TASK 32-21-16-991-006
1EFF : 1 1R 1CES ALL 1 11 1 32-21-16 Page 415 Aug 01/05
Nose gear door - Control rod Figure 405/TASK 32-21-16-991-007
1EFF : 1 1R 1CES ALL 1 11 1 32-21-16 Page 416 Aug 01/05
(d) Get two washer (21) or washer (22) or washer (23) or washer (24) to get a clearance between 0.2 mm (0.0078 in.) and 0.5 mm (0.0196 in.)
NOTE : You must install only one washer (21)or(22)or(23)or(24) on
____
each side.
(e) Remove the trunnion pins (15). Install the lubrication inserts
(11) with the new packings (12) and the bushes (10) in the trunnion pins (15).
NOTE : Install the new packings (12) after each removal of the
____
trunnion pins (15).
(f) Put the two washers (14), one on each side. Install the trunnion pins (15) assembled with the lubrication inserts (11) and the bushes (10).
NOTE : Put the two rigging bores in the horizontal position.
____
(g)
Make sure that the greases nipples of the lubrication insert (11) point up.
(h)
Align the rigging bores of the trunnion pins (15) and the drag strut(forestay) (7).
(i)
Install the bolts (13), the washers (16) and the nuts (17). TORQUE the nuts (17) to between 2.5 and 3 m.daN (18.43 and 22.12 lbf.ft) and safety with the cotter pins (18).
NOTE : Put the bolt (13) heads to the rear of the aircraft.
____
(j)
Align the rigging bores of the nose landing gear leg and the drag strut (7) and install the pin (1) with the GUIDE CONE (J47554).
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