TM 5-3610-285-14
Table 6-4. ORGANIZATIONAL TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. VACUUM PUMP DOES NOT BUILD UP CORRECT VACUUM-Cont
(c) Disconnect vacuum hose for vacuum bleed valve and plug hose.
(d) Plug in power cord for vacuum control box.
(e) Turn on vacuum pump and observe vacuum pressure.
(1) If pressure is still incorrect, proceed to step 4.
(2) If correct pressure is now observed, replace vacuum bleed valve (paragraph 6-16.5).
Step 4. Check for defective vacuum gage as follows:
(a) Disconnect vacuum hose from vacuum pump.
(b) Disconnect vacuum hose from center connection under vacuum frame.
(c) Obtain a hose long enough to reach from vacuum pump to fitting under vacuum frame and connect
hose to each connection.
(d) Turn on vacuum pump and observe vacuum created in vacuum frame.
(1) If correct vacuum is created in vacuum frame, replace vacuum gage (paragraph 6-16.6).
(2) If incorrect vacuum is observed, flush vacuum pump (paragraph 6-16.10).
(3) If problem remains, replace vacuum pump (paragraph 6-16. 9).
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