C. Apply  BMS 3-23 water displacing corrosion inhibiting compound to damaged 
finish on exposed surfaces. Refer to Volume 1, 20-60-00 for details of 
application of BMS 3-23.
D. After  application of BMS 3-23, all grease fittings in the treated area must 
be regreased.
E. Precautions for Use of Corrosion Inhibiting Compound.
CAUTION:  DO NOT APPLY BMS 3-23 TO AREAS WHICH WILL BE SUBSEQUENTLY PAINTED OR 
SEALED.
OBSERVE PRECAUTIONS OF VOLUME 1, 20-60-00 FOR SPRAYING CONTROL CABLES 
WITH BMS 3-23.
(1)Apply BMS 3-23 to unpainted hydraulic tubing in the area.
(2) Shield or protect pulleys, wire bundles, etc., in some manner to prevent 
direct application of BMS 3-23.
(3)Mask off electrical connectors to avoid application to any electrical 
contacts.
(4)Protect oxygen systems, including fittings, from contamination in accor-dance with chapter 35 of the Maintenance Manual.
(5)Do not  apply corrosion inhibiting compounds on grease joints or sealed 
bearings. These compounds dissolve grease and other lubricants. They are 
penetrating compounds and can get around the seals and into the bear-ings.
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CORROSION PREVENTION MANUAL 
NOSE LANDING GEAR
F. Improved Corrosion Protection
(1) Steering  Metering Valve Module: Airplane line numbers 208,213,217 and on 
have modules per PRR 53911 with changes in the shutoff valve. The plunger, 
the retainer, and the valve lap assembly are CRES. The manifold has a 
drain hole. These changes can be incorporated on other airplanes per SB 
32-0076. Parker SB 3800014-32-43 gives instructions for corrosion damage 
repair.
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NOSE LANDING GEAR
Nose Landing Gear 
Figure 1
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CHAPTER
34
NAVI GAT I ON
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NAVIGATION
AREA  PROBLEM  INDEX PREVENTION VOLUME 2  TERMINATING ACTION (IF ANY)  
Radio Altimeter Antenna  Corrosion of fasteners and moisture intrusion into antenna  34-30-01  Inspection, treatment, and replace-ment per SB 34-0035  
Traffic Alert Col-lision Avoidance System  Corrosion  of connectors  on lower antenna  34-40-01  SB34-0073  
 
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