OM4066 Lubrication & Service - Section 40
Page 40-3
EVERY 500 HOUR INSPECTION (Continued)
Item Task
Upper Horse Collar Panels
Inspect panels for damage and repair or replace where necessary.
Inspect seals for damage or misalignment and repair or replace where necessary.
Inspect the acoustic insulation and perforated steel covers for damage or soil build-
up and repair or replace where necessary. The acoustic insulation should
completely fill the void and be free of mud and excessive dust build-up. It should be
soft and of consistent density. Replace if necessary.
Blower Duct Cover &
Hoses
Inspect the rear axle blower hose, transition duct blower hose and transition flex
duct acoustic wrap for damage and repair or replace where necessary. The blow
hose insulation should be soft and uniform consistency along the entire length of the
hose, with no slumping or crushed areas.
NOTE: Each of the blower hoses have an internal tube wrapped with insulation and
an external fabric casing. This inner tube should also be inspected for damage.
Retarding Grid
Inspect visible air flow paths for any debris or mud. Do not remove any baffles to
perform inspection. Remove any debris found in the air flow paths. Screens may be
removed to remove debris. Screen mounting hardware torque is 40 N·m (30 ft lb).
DO NOT use an impact wrench to tighten.
Inspect the mounting hardware between each element, supporting duct work, and
covers. Look for any cracks forming around the mounting hardware. Replace any
loose, broken, or missing hardware. Replace any silencer element that has
cracking.
Inspect each silencer element case, supporting duct work, covers for cracks. Pay
particular attention to weld seams. Replace silencer element if any defects are
found.
Inspect visible baffles for cracks along their connection joints or damage to the main
surfaces. Do not remove any baffles to perform inspection. Replace silencer
element if any defects are found.
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