D
Group 177 Preventive Maintenance
T1008749
If equipped, check the bunk unit air filter — located
behind the passenger seat on bunk support. The bunk
unit air filter should be inspected at regular intervals,
approximately every 112,654 km (70,000 miles). The filter
should be changed after 160,934 km (100,000 miles).
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Check Refrigerant Reservoir, Condenser,
Pipes and Hoses
1 Ensure that the Refrigerant Reservoir is filled.
2 Using the leak detector, check the following for leaks:
•
Compressor thread connections.
•
Compressor crimp connections.
•
Compressor shaft seal.
•
Condensor tube connections.
•
Receiver/dryer connections.
•
Cab expansion valve.
•
Cab evaporator connections.
•
Pressure switch connections.
•
Schrader valve connections.
•
All refrigerant tubing bends and weld joints.
3 Recheck for leaks after performing any repair or
replacement.
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Check Air Intake and Air Deflector
Check the air intake grille and air bellows for cracks,
breaks and broken tabs and clips
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