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 119 of 750
TM
5-5420-228-24
DETAILED
TROUBLESHOOTING
PROCEDURE
LAUNCHER
OPERATION
- HYDRAULICS
Symptom-2
(Continued)
BRIDGE
DOES
NOT
LOWER
SMOOTHLY
FROM
VERTICAL
POSITION
This procedure
is to be performed
by
two
persons.
The
lead
person
is
referred
to as the first technician
and
shall direct
the activity
of the second
person
called
the second
technician.
Check
relief
valve
RV5 for pressure
setting
of 700
f
50
psi.
A
First
Technician
(Operators
Station)
●
Disengage
hydraulic
clutch.
.
Cycle
bridge
launching
control
levers.
Second
Technician
(Commander’s
Station)
.
Place
one
gallon
container
under
relief
valve
RV5.
.
If STE/ICE
is available,
proceed
to Test No.
51
(page 2-47)
to test master
relief
valve
RV5.
●
[f STE/ICE
is not available,
remove
gage plug
from
relief
valve
RV5 gage
port
and
install
pressure
gage.
First
Technician
(Operator’s
Station)
.
Engage
hydraulic
clutch,
.
Set engine
speed
at
1800 rpm.
●
Raise
tongue
cylinder
con[rol
lever.
Second
Technician
(Commander’\
Station)
●
Check
if pressure
gage or STE/ICE
indicates
700 *
50 psi,
Is pressure
700
f
50 psi?
(
m
I
QUADRANTS
REMOVEIJ
FOR CLARITY
c
RELIEF
VALVE
RV5
(COMMANDER’S
STATION)
2
D
Adjust relief valve R
B
(page 3-86),
steps
8
through @
●
If r~lef
valve setting cannot be
brought to within tolerance,
replace cartridge in relief valve
(page 3-85).
(2-71
blank)/2-72
Change
2
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