REPAIR INSTRUCTIONS, PART 3
Page 463
Usually there are various points on the engine
where a pressure line may be tapped into, but if
no other is apparent, the oil gauge line may be
disconnected and a pressure tank applied at that
point.
PRIMING THE LUBRICATION SYSTEM
1. Fill the engine crankcase to the specified
capacity with the recommended
MACK-specified EO-N PREMIUM PLUS ’03
engine oil.
2. Fill a pressure prelubricator (J 39258-A) with
the recommended oil and connect the
pressure prelubricator to the main oil gallery.
Prime the engine lubrication system for a
minimum of five minutes to ensure a
sufficient supply of oil to all respective parts
and components.
3. Remove the oil level dipstick and check the
crankcase level. Add sufficient oil, if
necessary, to bring it to the FULL mark on
the dipstick. Do not overfill.
Turbocharger
1. Remove and flush the turbocharger oil
supply line with a suitable, clean,
non-flammable solvent, Allow solvent to run
through the line to flush any debris, then
blow the line dry with clean compressed air.
A turbocharger failure can result in debris
contaminating the turbocharger oil supply line. It
is EXTREMELY IMPORTANT to remove, flush
and thoroughly clean the line prior to starting the
engine. Failure to do so can result in debris from
the oil line entering the turbocharger, causing
damage to the bearings and eventual failure of
the turbocharger.
Refer to “TURBOCHARGER FAILURE AND
ACTIONS REQUIRED TO AVOID REPEAT
FAILURE” to acquire more information regarding
the procedures required to avoid a repeat
turbocharger failure. The text of these procedures
is included in the APPENDIX section.
2. Reconnect the oil supply line to the external
junction block, but allow the oil supply line to
the turbocharger to remain disconnected.
3. Remove the turbocharger air inlet duct.
4. Fill the oil inlet port to overflowing with clean
engine oil. Next, using your fingers at the
compressor wheel, carefully spin and wiggle
the turbocharger shaft to distribute the oil
over all bearing surfaces. Then, again fill the
oil inlet port to overflowing.
5. Install the turbocharger air inlet duct and
reconnect the oil supply line at the
turbocharger.
It is also necessary to perform the above
turbocharger pre-lubrication procedure anytime
the vehicle has not been operated for a period
exceeding 30 days to avoid damage to the
turbocharger. During this extended period, all oil
will have drained away from the bearing and shaft
surfaces.
Cooling System
1. Check the cooling system. Make sure all
plugs are installed and tight. Make sure the
thermostat(s) is installed.
2. Install a new coolant conditioner if so
equipped.
3. Fill the system with the recommended
coolant.
To ensure that all air is purged from the cooling
system, remove a plug from the top (or end) of
the coolant manifold during filling. This will
eliminate any air that is trapped as a result of
rapid filling.
5-111.bk Page 463 Monday, July 10, 2006 2:26 PM
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