Main Gear Reaction Link Installation 500
32-11-71 Page 402 Figure 401 (Sheet 1) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. May 15/67
527 Main Gear Reaction Link Installation
Oct 20/87 Figure 401 (Sheet 2) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-11-71 Page 403
3. Install Main Gear Reaction Link
WARNING: USE NITRILE GLOVES FOR SKIN PROTECTION AGAINST BMS 3-27 (MASTINOX 6856K). IF MASTINOX GETS ON YOUR SKIN, IMMEDIATELY REMOVE IT WITH WATER. IF THIS MATERIAL GETS IN YOUR EYES, IMMEDIATELY FLUSH YOUR EYES WITH WATER AND GET MEDICAL AID. THIS MATERIAL CONTAINS VERY POISONOUS AND FLAMMABLE AGENTS WHICH CAN CAUSE INJURIES TO PERSONS.
CAUTION: REMOVE UNWANTED MASTINOX FROM THE SURFACES WHICH WILL BE LUBRICATED WITH A GREASE NIPPLE. IF YOU APPLY MASTINOX TO JOINTS THAT TURN, FAILURE OF THE LANDING GEAR TO EXTEND OR RETRACT COULD OCCUR.
A. Clean and lubricate with grease, all bolts, shafts, washers, and bushings.
B. Connect reaction link to universal (12, Fig. 401).
(1)
Place reaction link in position in universal (12) with lock actuator lugs up.
(2)
Install thread protector on reaction link to universal attachment bolt (13).
(3)
Insert bolt (13) with head end up. Remove thread protector.
(4)
Add washer and nut. Tighten nut to within range of driving torque plus 10 to 12 pound-feet lube torque.
C. Connect reaction link (4) to uplock crank (7).
(1)
Apply BMS 3-27 (Mastinox 6856K) corrosion preventive compound to the bellcrank attach bolt, reaction link, and nut.
(2)
Insert bolt (8) so that bolthead is retained by lug on reaction link. Add washer and nut.
(a)
Do a check for the self-locking torque of the nut.
(b)
Measure and record the self-locking torque of the nut.
NOTE: The self-locking torque must be 90 to 800 pound-inches.
(c)
Add the self-locking torque you measured in step (a) to 250-300 pound-inches to get the installation torque range.
(3)
Tighten the nut in the installation torque range you measured in step (c).
D. Insert downlock actuator bolt (15). Butter lubricate washer surface, shank, threads and thread relief groove with grease. Install nut and washers on bolt (18). Tighten nut hand tight and slack off, if necessary, to the nearest castellation to install cotter pins.
E. Install uplock actuator (Ref 32-32-41).
F. Connect side strut (10) to reaction link.
(1)
Align side strut with lugs on reaction link.
(2)
Install thread protector on side strut top attachment bolt (9).
(3)
Insert bolt from aft side. Remove thread protector. Add special washer (11) and nut.
(4)
Tighten nut to 500-800 pound-inches lube torque.
527
32-11-71 Page 404 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. May 01/99
G. Connect lock strut (3) to reaction link.
(1)
Align lock strut with reaction link.
(2)
Insert bolt (5) from keeper side of lock strut.
(3)
Add washer and nut.
(4)
Install keeper (14) with washer and bolt.
(5)
Tighten nut hand tight.
(6)
If necessary, slack off nut to align nearest castellation slot with cotter pin hole. Lock nut with cotter pin.
H. Install downlock springs (2) (Ref 32-32-91 R/I).
I. Lubricate landing gear (Ref Chapter 12, Main Landing Gear Lubrication).
J. Jack airplane for gear retraction (Ref Chapter 7, Jacking Airplane).
K. Remove ground lock assemblies (Ref 32-00-01) and pressurize hydraulic system (Ref 29-11-0 MP).
L. Retract and extend gear, install ground lock assemblies (Ref 32-00-01) and examine reaction link and associated parts to assure that all affected parts function correctly.
M. Lower airplane and remove jacks.
527
Oct 20/87 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-11-71 Page 405
MAIN GEAR REACTION LINK - INSPECTION/CHECK
1. General
A. These data consist of illustrations and wear limit charts. No procedure is given in this section for access to permit inspection. Refer to Main Gear Reaction Link - R/I.
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