TM 5-3805-298-23-2
0151
Table 1. Bucket Clamshell Does Not Operate - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Bucket Clamshell Does Not
Test Step 4. Check Pilot Valves.
Operate - Continued
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-298-10).
2. Relieve hydraulic system pressure
(WP 0369).
3. Disconnect pilot valve assembly
from right console (WP 0379).
4. Disconnect bucket lift - lower and
bucket lift - raise hoses from pilot
valve (Figure 1).
5. Disconnect clamshell - open and
clamshell - close hoses from pilot
valve (Figure 1).
6. Connect bucket lift - lower hose to
clamshell - close connection on
pilot valve (Figure 1).
7. Connect bucket lift - raise hose to
clamshell - open connection on
pilot valve (Figure 1).
8. Connect clamshell - open hose to
bucket lift - lower connection on
pilot valve (Figure 1).
9. Connect clamshell - open hose to
bucket lift - raise connection on
pilot valve (Figure 1).
0151-4
