B. Procedure
S 495-015
(1) Put a 0.005-inch shim between the adjusting screw and phenolic block on the airframe.
LOCKWIRE (MS20995C32)
DIRECTION OF THE FREE PLAY CHECK
LOCKWIRE (MS20995C32)
Hartwell Series H856 and H2040 Latch
Figure 502
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A 737-300/400/500MAINTENANCE MANUAL
(2) S 825-014Turn the adjusting screw until, with the latch closed, until there is no free play at the end of the latch lever.
(3) S 095-016Remove the 0.005-inch shim.
(4) S 755-017Make sure that thumb pressure only is necessary to latch and release the latch.
(5) S 415-018Install the safety wire (View A, Fig. 502).
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A
737-300/400/500MAINTENANCE MANUAL
COLD WEATHER MAINTENANCE - SERIVCING
____________________________________
1. General_______
A. Safe airplane operation in cold weather conditions can cause special problems. These problems occur because of the effects of the ice, snow, slush, frost, and low temperatures. Maintenance persons must know the effect of cold weather to keep the costs and time to a minimum. This procedure gives data for removal of ice, snow, slush and frost from the airplane. This procedure gives data for the prevention of subsequent ice, snow, slush and frost. It also includes other related data for the operation of the airplane in cold weather. The operator must find and use the correct procedures for the weather conditions that occur
B. The person that does the work must make sure the procedures for operation of equipment during ice, snow and/or frost conditions are satisfactory for the conditions of operation. Use the data that follow to make sure the procedures are satisfactory:
(1)
The cold weather conditions that occurred before.
(2)
The equipment or materials that are available.
(3)
The weather conditions at the airport where you will operate.
C. In cold weather it is necessary to drain the fuel tank sumps prior to refueling to remove water from the fuel tanks if the airplane has been idle for more than 45 minutes prior to refueling. Drain the fuel tank sumps again after refueling if the airplane has been idle for 2 hours or more after refueling, prior to departure (AMM 12-11-00/301). In cold weather water can freeze, and not let the drain valves open.
D. Definitions
(1)
Deicing is a procedure to remove the frost, ice or snow from the airplane. Hot water or a hot mixture of water and deicing/anti-icing fluid is applied to do this.
(2)
Anti-icing is a procedure to make sure that ice, snow and/or frost does not collect and become attached to the airplane surfaces. Anti-icing fluid or a mixture of anti-icing fluid and water is applied to the airplane to do this.
(3)
One step ice removal/anti-icing applies a hot deicing/anti-icing fluid or mixture of fluid and water. Use the conditions that follow to make a decision on how hot to make the fluid or the fluid and water mixture:
(a)
The ambient temperature
(b)
The weather conditions
(4)
Two step ice removal/anti-icing has the steps that follow:
(a) Apply hot water or a hot mixture of deicing/anti-icing fluid and water to remove the ice.
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