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Page 94
MAINTENANCE
REPLACEMENT PROCEDURE
Install fuel filters using the following procedure.
1. Wipe the filter mounting base clean.
2. Apply a film of clean engine oil to the sealing
gasket.
3. Fill the filter with clean fuel.
4. Install the filter and tighten 3/4 to 1 turn after
gasket contacts the base.
5. Start the engine and check for leaks.
Use of anything other than genuine MACK filters
may cause damage and void the engine
warranty. Change filters according to the
recommended maintenance schedule.
If the engine fails to start after installing new fuel
filters, refer to Priming the Fuel System under
Engine Final Preparation and Operational Check.
Coolant Conditioner Replacement
[125 LD]
If the engine is equipped with the optional coolant
conditioner, the conditioner element is replaced
as follows:
1. Place a suitable container below the coolant
filter area to catch any spilled coolant.
2. Using a suitable filter wrench (J 29927, or
equivalent), remove the coolant conditioner
filter element and discard.
3. Apply a light film of oil on the face of the new
filter element gasket seal.
4. Install the filter element on the coolant
conditioner base assembly. Using tool
J 24783, tighten the filter element one full
turn after gasket contacts the base.
5_106_00.bk Page 94 Friday, August 4, 2000 11:17 AM
BDC for engine manuals and specs