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TROUBLESHOOTING & REPAIR | |||||||
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| TORCH CONTINUITY AND SOLENOID TEST (continued) |
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| TABLE F.1 - TORCH ASSEMBLY RESISTANCES |
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| TEST | CIRCUIT(S) BEING | EXPECTED | TEST |
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| POINTS | TESTED | RESISTANCE | CONDITIONS |
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| Lead #2 | Pilot arc | 1.5 ohms maximum | Torch consumables |
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| To Lead #3 | leads |
| in place |
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| Lead #2 to Torch | Pilot arc lead to | 1.0 ohm maximum | Torch consumables |
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| Nozzle | nozzle |
| in place |
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| Lead #3 to Torch | Pilot arc lead to | 1.0 ohm maximum | Torch consumables |
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| Nozzle | nozzle |
| in place |
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| Pin 1 to Pin 2 | Torch trigger circuit | 100K ohms minimum | Torch trigger NOT |
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| Plug J1 (Red Leads) |
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| pulled (not activated) |
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| Pin 1 to Pin 2 | Torch trigger circuit | 1.0 ohm maximum | Torch trigger pulled |
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| Plug J1 (Red Leads) |
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| (activated) |
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| Pin 3 to Pin 4 | Electrode Solenoid | 45 to 55 ohms | None |
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| Plug J1 (Gray Leads) |
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Figure F.11
(LEAD 2) NZL
WRK
(LEAD 3) EL
4
3
2
1
Harness
Plug J1
10. Torch circuits may be measured when elec- | 11. Replace leads and plugs previously |
trode and nozzle are in place if the various cir- | removed. |
cuits are isolated from each other. NZL (2), |
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Electrode (3), Trigger (1,2), and Torch leads (3,4) |
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should all measure greater than 1 Meg ohm when |
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checked as isolated circuits. See Figure F.10 |
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Diagram. |
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