TRUCK SERVICE MANUAL
BRAKES-AIR
TROUBLE SHOOTING GUIDE
PROBLEM
POSSIBLE CAUSE
REMEDY
Alcohol Evaporator
Does Not Operate
(NOTE: See below)
Lines restricted (foreign
Clean or replace lines.
material, kinked, etc.)
Alcohol evaporator filter
Clean or replace filter
clogged
material.
Leaky fittings, lines, jar
Tighten or replace necessary
cover gasket or filler cap
parts.
gasket.
3/16" line from compressor to
Line from compressor to al-
alcohol evaporator longer than
cohol evaporator should not
five (5) feet.
be longer than 1.52 m (5').
Compressor not in loaded
By observing dash gauge,
(compressing air) cycle.
make certain compressor is
in loaded (compressing air)
cycle.
Check valve stuck in closed
Replace necessary parts or
position.
complete check valve.
NOTE: Proof that evaporator is functioning can be determined by:
1. If a glass jar is being used, alcohol should bubble when engine is revved (compressor loaded).
2. If a plastic jar or metal can is used, check exhaust of devices or reservoir drain for odor of alcohol.
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