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Figure 2. Air Drain Valve.
Figure 3. Governor Adjustment.

Field Maintenance Manual For Military 621G Scraper -2 Page Navigation
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TM 5-3805-296-23-2
0114
Table 1. Service or Parking Brakes Do Not Release Correctly Continued.
0114
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
12. Remove quick disconnect coupling
Service or Parking Brakes
half (Figure 1, Item 1) from
Do Not Release Correctly -
Continued
air drain connection
(Figure 1, Item 2).
13. Perform corrective action.
Test Step 5. Test Air Compressor
Governor Adjustment.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Remove cover (Figure 3, Item 4)
from governor (Figure 3, Item 1).
3. Loosen locknut (Figure 3, Item 2).
NOTE
Turn adjustment screw clockwise to lower pressure and counterclockwise
to raise pressure. One rotation of adjustment screw changes pressure
approximately 20 psi (140 kPa).
4. Turn adjustment screw
(Figure 3, Item 3) as necessary to
adjust air pressure to 125 5 psi
(862 34 kPa).
5. Tighten locknut (Figure 3, Item 2).
6. Install cover (Figure 3, Item 4) on
governor (Figure 3, Item 1).
0114-5


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