POWER TRAIN TMS700E SERVICE MANUAL
7-14 Published 01-29-2015, Control # 512-01
surfaces. Be sure to clean the sealing surface of the outlet
tube and the inside of the outlet tube, taking care not to
damage the sealing area on the tube.
Vacuator Valve
Vacuator valves are designed to expel loose dust and dirt
from the air cleaner body automatically, thus lengthening the
element service life. The valve lips must point straight down
and be kept free from debris to operate effectively. Mud and
chaff can lodge in these lips periodically and hold them open
during engine operation.
Check the condition of the valve and lips frequently and keep
them clean. The valve lips should be open only when the
engine is shut down, or running at low idle speed. If the valve
is turned inside out, check for a clogged air cleaner inlet.
Malfunction of this valve does not reduce the air cleaner
effectiveness, but does allow the element to get dirty faster
and reduces serviceable life. If a valve is lost or damaged,
replace it with a new valve of the same part number.
Duct Work
1. Check the intake pipe cap and screen for accumulation
of leaves, trash, and other debris that could restrict air
flow. Repair the screen or replace the cap if any large
holes are found in the screen.
2. Check all mounting hardware for security to eliminate
possible vibration of intake piping. Such vibration leads
to early failure of hoses, clamps, and mounting parts,
and can cause hoses to slip off the connecting pipes,
allowing non-filtered air into the engine air intake.
3. Check hoses for cracks, chafing, or deterioration, and
replace at the first sign of probable failure.
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