Other information:
Repair procedures
Refrigerant System Service Basics (R-134a)
Refrigerant Recovery
Use
only U.L.-listed service equipment that is certified to meet the
requirements of SAE J2210 when removing HFC-134a (R-134a) from the air
conditioning system.
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...
Engine oil and filter
The engine oil and filter should be
changed at the intervals specified in
the maintenance schedule. If the vehicle
is being driven in severe conditions,
more frequent oil and filter changes are
required.
Drive belts
Inspect all drive belts for evidence of
cuts, c ...