TM-5-5420-228-24
LAUNCHER HYDRAULICS SYSTEM M48A5/M60A1 TANK CHASSIS, TRANSPORTING: FOR BRIDGE, ARMORED-VEHICLE-LAUNCHED; SCISSORING TYPE, CLASS 60
TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT; MAINTENANCE MANUAL
AUGUST 1985
TM-5-5420-228-24 - Page 153 of 750
TM
5-5420-228-24
Symptom-5
DETAILED
TROUBLESHOOTING
PROCEDURE
T
LAUNCHER
1
Check
rellef
valve
RV4 for pressure
setting
of 3600
f
50 psi.
First
Technician
(Operator’s
Stat ion )
●
Disengage
hydraulic
clutch.
●
Cycle
bridge
launching
cent
rol
levers.
Second
Technician
(Launcher
Tongue)
●
Place
one
gallon
container
under
relief
valve
RV4.
●
If STE/ICE is available, proceed to Test No. 51
(page 2-47) to test relief valve RV4.
●
Remove gage plug
mom
relief valve RV4, and
install
pressure
gage in gage port.
First
Technician
(Operator’s
Station)
●
Engage
hydraulic
cluk-h.
●
Set
engine
speed
at
I WI
rpm.
●
Raise
tongue
cylinder
contr(d
lever.
Second
Technician
(Ltiunchw
Tongue)
●
Check pressure gage or STE\ICE
indicates
3600 * 50 psi.
Is
pressure
3600
~
50 psi?
I
(
●
Remove
pressure
gage
and
I
install
plug
in gage
port.
●
Replace
check
valve
CV4
(page 3-99).
CAP END TONGUE
CYLINDER
)
●
Adjust
relief valve
RV4 (page
3 – 84) steps
8 through
15.
l
If relief
valve setting
cannot
be
brought
to within tolerance,
replace
cartridge
in rellef
valve
(page
3-83).
●
If relief valve
setting
still
cannot
be brought
within
tolerance,
notify support
maintenance
of defective
valve
bank.
2-90
Change
2
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