TM 5-3610-286-20
Table 2-5. Organizational Troubleshooting (cont).
Malfunction
Test or inspection
Corrective action
16. DELIVERY PILE BOARD WILL NOT RAISE (cent).
Step 5.
Step 6.
Step 7.
Step 8.
(cont)
Limit switch (b59): Across switch terminals
Contactor (c8): Point 21 and Point 22
Relay (d229):
Point 13 and Point 14, Point A1 and Pont A2 (with relay
button pressed)
.
Contractor (c7): Point A1 and Point A2
If no continuity is present, replace faulty component (paragraphs
2-93 and 2-89).
If continuity is present, go to step 6.
Check wiring using schematic (figure FO-1).
Replace defective wiring.
Using a multimeter set to ranger higher than 220V ac, check for 220V ac between
point U5 of terminal strip and ground with contactor (c7) relay button pressed.
Repeat same procedure for V5 and W5 of terminal strip.
If power is present, go to step 8.
If no power is present, go to step 8.
Using a multimeter set to ohms range, check for continuity between points listed
for following relays.
Relay (d229):
Point A1 and Point A2, Point 33 and Point 34, Point 43 and
Point 44.
Relay (d230):
Point A1 and Point A2, Point 33 and Point 34, Point 43 and
Point 44.
If continuity is present, go to step 9.
If no continuity is present, replace faulty relay(s) (d229)/(d230)
(para. 2-93).
2-45
