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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
5724L
5723L
5758L 5824R 5764L
5823R 5731L
5769L  5745L

FAN COWL 5717L
COWL
5746L 5817R
5738L
5846R
5838R
LEFT SIDE VIEW OF NO. 1 AND 2 ENGINES
Nacelle and Engine-to-Wing Fairing Access Doors and Panels Figure 201
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A
737-300/400/500MAINTENANCE MANUAL
 HARTWELL TYPE LATCHES - ADJUSTMENT/TEST
_______________________________________
 1.  General_______
 A. This procedure contains four tasks:
 (1)  
The first task is a test of Hartwell latches in the 5100, 5101, H502-1, and H503-1 series.

 (2)  
The second task is the adjustment instructions for Hartwell latches in the 5100, 5101, H502-1, and H503-1 series.

 (3)  
The third task is a test of Hartwell latches in the H856 and the H2040 series.

 (4)  
The fourth task is the adjustment instructions for the Hartwell latches in the H856 and the H2040 series.

 TASK 12-32-11-705-001
 2.  Hartwell Type Latches - Test (Fig. 501)____________________________
 NOTE: Series 5100, 5101, H502-1 and H503-1 Latches
____
FREE PLAY IS

AT THE EDGE FOR
0.01-0.03 INCH
A FREE PLAY CHECK

Hartwell Series 5100, 5101, H502-1, and H503-1 Latches

Figure 501

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A
737-300/400/500MAINTENANCE MANUAL
 A. Procedure
 S 225-005
 (1)  
Make sure the door turns freely and is smooth with the contour at each latch +0.100 or -0.030 inch.

 S 225-006

 (2)  
At each latch, do these steps:

 (a)  
Push the door to its fit and fair position at the door edge.

 (b)  
Lock the latch.

 (c)  
Push the latch bolt at the location shown.

 NOTE: There must be 0.010 to 0.030 inch depression free play.
____ Do the adjustment task if you do not find this free play.
 S 225-004
 (3) Make sure the latch bolt overlap on the structure is the minimum
 0.25 inch as shown (Fig. 501).
 TASK 12-32-11-805-007
 3. Hartwell Type Latches - Adjustment (Fig. 501)
__________________________________
 NOTE: Series 5100, 5101, H502-1 and H503-1 Latches
____
 A. Procedure
 S 905-019
 (1)  Add or remove the phenolic shims until you get the 0.010 to 0.030 inch depression free play.
 NOTE: 0.030- and 0.040-inch thick shims are usually used to get the
____ correct adjustment (Fig. 501). The shim thickness can be different.
 TASK 12-32-11-205-008
 4. Hartwell Type Latches - Test (Fig. 502)
____________________________
 A. General
 (1)  Series H856 (With Adjusting Screw) and H2040 Latch
 NOTE: H856 latches without adjusting screw can be tested in task
____
 one.

 B. Procedure
 S 225-009
 (1)  Make sure the door turns freely to be smooth with the contour at each latch +0.10 or -0.04 inch.
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737-300/400/500MAINTENANCE MANUAL
 S 225-010
 (2)  With the latch closed, make sure there is no free play at the end of the latch lever. Also, make sure that thumb pressure only is necessary to latch and release the latch.
　
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