M978 Tanker Maintenance Procedures Instructions (Cont)
22-10.1 V1 EMERGENCY VALVE REPAIR (MODEL A) (CONT).
Remove bonnet assembly (6) from valve
body (7) by pressing and turning
Make sure bonnet assembly is secure in
clamping device compressing spring. If bonnet
assembly slips from clamping device while
spring is compressed, injury to personnel can
Install bonnet (6) and disk assembly (8) in suitable
clamping device and compress spring (9).
Remove spring pin (10).
Bonnet assembly is spring loaded. Spring
tension must be released slowly to prevent
injury to personnel.
Release tension on spring (9) and remove
bonnet (6) and disk assembly (8) from