ITEM TO BE
a. Inspect oil coolers for leaks or dirty fins. Repair any leaks
Cooler damaged, clogged,
authorized for Unit Maintenance.
or leaks are present.
Wear eye protection when working with
pressurized air to prevent debris from causing
b. Clean dirty fins with low pressure air. Inspect oil cooler lines
for holes, rips, and tears. Replace oil cooler lines as necessary in
c. Inspect oil cooler screens for clogs or holes.
Check engine cooling fans for proper alignment and damage (see
Fan damaged or
b. Inspect and service manifold heater spark plug.
Clean accumulated grease and dirt from insulators.
Install groundhop kit.
c. Shut off engine before it reaches operating temperature and do
Be careful when feeling engine. Engine parts can
be hot enough to cause burns.
1) Using extreme caution, run hand along each intake
manifold to check for heat generated by manifold heaters.
If heaters are operative, heat will be felt.
Main Engine Oil
Main Engine Air
a. Clean main engine air cleaner (refer to TM 9-2350-256-10).
1) Be sure that all joints, seals, and connections are
tight and not leaking.
Hoses are damaged.