TM 9-2350-287-10OPERATING MAIN ENGINE AIR CLEANER SYSTEMSummer PositionNOTERight projectile rack assembly must bemoved before locking handles may bepositioned.In temperatures over 40 F (4.4 C), leavelocking handles (1) in holders.Winter PositionIn temperatures below 25 F (-3.9 C),raise locking handles (1) and fasten themon hooks (2).Intermediate TemperaturesWhen operating in temperatures from 25F to 40 F (4.4 C to -3.9 C), position asfollows:1. Start engine with locking handles (1) inwinter position.2. When engine reaches operatingtemperature, place locking handles (1)in summer position.AIR CLEANER RESTRICTION INDICATORAn air cleaner restriction indicator is located in driver’s compartment just above engine access cover. During normaloperation, a yellow sleeve in the indicator will indicate the amount of restriction. When yellow sleeve reaches the redbank on indicator, air cleaner elements should be serviced 9p. 3-28). A reset button on bottom of indicator will retractthe yellow sleeve. If the restriction has not been removed, the yellow sleeve will reach into red band on indicator thenext time engine is operated.2-148
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