Miller Trailblazer 302 Diesel Owner's Manual page 40

Trouble
Lack of high frequency; difficulty in
establishing Gas Tungsten Arc Weld-
ing arc.
Wandering arc − poor control of arc
direction.
Tungsten electrode oxidizing and not
remaining bright after conclusion of
weld.
B. Generator
Trouble
No power output.
Low power output.
High power output.
Erratic power output.
C. Engine
Trouble
Engine does not crank.
Engine cranks but does not start.
OM-217 454 Page 36
Use proper size tungsten for welding amperage.
Reduce leakage of high frequency from torch or work cable (check grounding, remove excessive
coils from weld cables, use shorter weld cables, etc.).
Check cables and torch for cracked or deteriorated insulation or bad connections. Repair or replace
necessary parts.
Reduce gas flow rate.
Select proper size tungsten. Properly prepare tungsten.
Shield weld zone from drafts.
Increase postflow time.
Check and tighten all gas fittings.
Properly prepare tungsten.
Reset supplementary protectors CB1, CB2 and/or CB3 (see Section 7-1).
Have Factory Authorized Service Agent check brushes, slip rings, and circuit boards PC1 and PC2.
Check and clean air cleaner as necessary.
Clean and/or replace fuel filter and inline fuel strainer as necessary (see Section 8-2)
Check engine speed, and adjust if necessary (see Section 8-4).
See engine manual.
Check engine speed, and adjust if necessary (see Section 8-4).
Check receptacle wiring and connections.
Check governor according to engine manual.
Have Factory Authorized Service Agent check brushes, slip rings, and field current control board PC2.
Circuit breaker CB8 may be open (see Section 8-5). Wait and retry.
Check battery voltage.
Check battery connections and tighten if necessary.
Check plug Engine Control switch and engine wiring harness connections.
Have Factory Authorized Service Agent check Engine Control switch S2 or circuit breaker CB8.
Check fuel level (see Section 6-1).
Open fuel valve (see Section 5-6).
Service inline fuel strainer and fuel filter (see Section 8-2).
Check battery and replace if necessary.
Check engine charging system according to engine manual.
Bleed air from fuel system according to engine manual.
Check fuel solenoid according to engine manual.
Have Factory Authorized Service Agent check glow Plug switch S6, glow plug, and control relay CR3.
Remedy
Remedy
Remedy