Dodge RAM TRUCK 1500 1995 Service Manual page 1246

B R
STEERING 19 - 3
P O W E R S T E E R I N G S Y S T E M D I A G N O S I S
PUMP PRESSURE TEST
The following procedure is used to test the opera­
tion of the power steering system on the. vehicle.
(1) Check belt tension and adjust as necessary.
THE AUTOMATIC TENSIONER.
(2) Disconnect high pressure hose at gear or pump.
Use a container for dripping fluid.
(3) Connect Gauge 6815 to both hoses using
adapter fitting (Fig. 1). Connect spare pressure hose
to gear or pump.
9519-1
Fig. 1 Pressure Test Gauge
(4) Open the test valve completely.
(5) Start engine and warm up to operating temper­
ature.
(6) Check fluid level, add fluid as necessary.
(7) Gauge should read below 862 kPa (125 psi). If
reading is above inspect hoses for restrictions and re­
pair as necessary. The initial pressure should be in
the range of
345-552
kPa
(50-80
psi).
CAUTION: The following test procedure involves
testing maximum pump pressure output and flow
control valve operation. Do not leave valve closed
for more than five seconds as the pump could be
damaged.
(8) Close valve fully three times and record highest
pressure indicated each time. All three readings
must be above specifications and within 345
kPa (50 psi) of each other.
o Pressures above specifications but not within 345
kPa (50 psi) of each other, replace pump.
• Pressures within 345 kPa (50 psi) of each other
but below specifications, replace pump.
CAUTION: Do not force the pump to operate against
the stops for more than 2 to 4 seconds at a time be­
cause, pump damage will result.
(9) Open the test valve, turn steering wheel ex­
treme left and right positions against the stops.
Record the highest indicated pressure at each posi­
tion. Compare readings to specifications. If highest
output pressures are not the same against either
stop, the gear is leaking internally and must be re­
paired.
PUMP OPERATING SPECIFICATIONS
E N G I N E
RELIEF PRESSURE
(PoS.I.)
FLOW
( G . P . M . )
3.9L 1425-1500 2 4-2.8
5.2L 1425-1500 2.4-2.8
5.9LGAS 1400-1500 2.7-3.1
8.0L ,
1400-1500 2.7-3.1
5.9LDSL 1400-1500 2.7-3.1
J9519-62