TM 1-1520-238-T-5
7–57
7–10.
PRIMARY HYDRAULIC SYSTEM – MAINTENANCE OPERATIONAL CHECK (cont)
7–10
7. On pilot center circuit breaker panel (fig. 7–22), close the LT CAUT, TWHL LOCK, and LT PRI circuit
breakers.
M68-007
LT PRI
TWHL LOCK
LT CAUT
Figure 7–22.
Pilot Center Circuit Breaker Panel
8. Complete the maintenance operational check as follows:
NOTE
Removable handle for hydraulic hand pump is stowed in cross beam of access
door R325.
Task
Result
a. Using hydraulic hand pump handle, service
primary hydraulic manifold reservoir to
normal operating level (TM 1-1520-238-23).
If hydraulic hand pump does not service primary
hydraulic manifold reservoir, go to paragraph 7–12.
b. Set hydraulic hand pump selector valve (fig.
7–21) to INBOARD position.
c. On pilot master caution/warning panel
(fig. 7–23), press PRESS TO TEST
indicator. Check pilot master
caution/warning panel and pilot
caution/warning panel (fig. 7–24). All
caution/warning indicators are lighted.
If any of the caution/warning indicators are not
lighted, replace lamps. If lamps still do not light, refer
to TM 1-1520-238-T-6 to troubleshoot caution/warning
system.
If PRI HYD PSI indicator is not lighted, replace lamp
(TM 1-1520-238-23). If lamp still does not light, go to
paragraph 7–13.
M68–008
PRESS TO TEST
INDICATOR
Figure 7–23.
Pilot Master Caution/Warning Panel
