Northern Lights M65C13, Operator'S Manual

Page: 40 / 122

Lubrication & Maintenance/500 Hour/12 Month
RG19661,00003DA -19-26FEB13-1/1
Checking Air Intake System
IMPORTANT: The air intake system must not leak.
Any leak, no matter how small, may result in
engine failure due to abrasive dirt and dust
entering the intake system.
1. Inspect all intake hoses (piping) for cracks. Replace
as necessary.
2. Check clamps (A) on piping which connect the air
cleaner, engine and, if present, turbocharger. Tighten
clamps as necessary. This will help prevent dirt
from entering the air intake system through loose
connections causing internal engine damage.
IMPORTANT: ALWAYS REPLACE primary air cleaner
element when air restriction indicator gauge
shows vacuum of 625 mm (25 in.) H
2
O, or when
reset button has popped up (if equipped). Also
replace element if it is torn, or visibly dirty.
3. Test air restriction indicator (B) for proper operation.
Replace indicator as necessary.
IMPORTANT: If not equipped with air restriction
indicator, replace air cleaner elements at 500
Hours or 12 Months, whichever occurs first.
4. Replace air cleaner element if restriction indicator
gauge shows vacuum of 625 mm (25 in.) H
2
0, or
when reset button has popped up, if equipped. Also
replace element if it is torn, or visibly dirty.is torn or
visibly dirty. Service as necessary. (See REPLACING
AIR CLEANER in Service As Required Section.)
RG9869
—UN—15JAN99
Check Clamps
RG9875
—UN—12FEB99
Air Restriction Indicator
A—Clamps
B—Air Restriction Indicator
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