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 175 of 750
TM
5-5420-228-24
Symptom-7
DETAILED
TROUBLESHOOTING
PROCEDURE
T
LAuNCHER
OPERATION
- HYDRAULICS
(Continued)
Check
relief
valve
RV3 for pressure
setting
of 3600
~
50
psi.
1
$econd Technician
(Launcher)
●
Place (NK gtlllon
container
under
relief
valve
RV3.
First
Technician
(Operator’
Station)
●
Disengtige
hydraulic
clutch.
●
Cycle
bridge
iwnching
control
levers.
Second Technician
(Launcher)
●
If STWICE is availabie, proceed to Test No. 51
(page 2-47) to test relief valve RV3.
●
If STE/ICE is not available,
remove
gage plug
RV3 and connect pressure gage in gage port.
First
Technician
(Operator’s
Station)
●
Engage
hydraulic
clutch,
●
Set
engine
qwed
at
I WI
rpm.
●
Depress
overhead
cylinder
cent roi
iever.
Second
Twhnicitin
(Ltiuncher)
●
Check
if pressure
gage or STE/ICE
indicatea
36CU)* 50 pai.
Is
pressure
3600
~
50 psi?
m
RELiEF
VALVE
RV3
GAGE ‘PLUG
(
6
r
7
●
System
Is operational.
●
Perform
launch
and retrieve
L
YES
NO
procedures
(TM 5-5420-202-10).
)
●
Adjust
reiief vaive
RV3 (page
3-81)
steps
8 through
15,
●
If relief
valve
setting
cannot
be
brought
to within toierance,
replace
cartridge
in relief
valve
(page
3-80).
●
if relief vaive
setting
stiil
cannot
be brought
within
tolerance,
notify support
maintenance
of defective
vaive
bank.
2-100
Change
2
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