Change 3
2-74.3/(2-74.4 blank)
First Technician (Operator’s Station)
x
Raise tongue cylinder control lever for five
minutes.
Second Technician (Launcher Tongue)
x
Visually check tongue cylinder for leaks, or
damage. Check outer surface for overheating.
Check tongue cylinder for leaks, damage or
excessive heat.
Is tongue cylinder leaking, damaged or
overheating?
5
TM 5-5420-228-24
DETAILED TROUBLESHOOTING PROCEDURE
LAUNCHER OPERATION – HYDRAULICS
(Continued)
Symptom-2.1
TONGUE
CYLINDER
x
Replace tongue cylinder
(page 3-234).
YES
NO
6
x
Replace tongue dual
counterbalance valve (page
3-204.8).
7