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Section III. PREVENTIVE MAINTENANCE CHECKS AND SERVICES
Table 5-1. Direct and General Support Preventive Maintenance Checks and Services (Continued) -502230164

TM-5-3740-214-14 Aerosol Generator Non-Thermal Insecticide Unltra-Low Volume Model XKA (NSN 374001-076-1341) Manual
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TM 5-3740-214-14
Table 5-1. Direct and General Support Preventive Maintenance Checks and Services
M = Monthly
A/R = As Required
Q = Quarterly
H = Hourly
INTERVAL
ITEM
ITEM TO BE INSPECTED
NO.  M A/R
Q
H
PROCEDURE
1
ENGINE ASSEMBLY
500
a. Check crankcase vacuum. Use vacuum gage.
NOTE
The engine must be running to check crankcase vacuum.
Figure 5-2. Installation of Vacuum Gage
(1)
Remove plug dipstick.
(2)
Insert vacuum gage into dipstick hole. Make sure it seals well.
(3)
Start engine and test vacuum.
(a)
If vacuum is /2 - 1 inch (12.7 - 25.4 mm) of mercury the engine is ok.
(b)
If vacuum is less than 1/2 inch (12.7 mm) of mercury, check crankcase breather.
(c)
If there is a positive pressure in the crankcase, check engine compression.
500
b. Check crankcase breather assembly.
(1)
Remove valve cover and gasket.
5-4






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