Dodge ram truck 3500 1996 Service Manual page 1369

B R
STEERING 19 - 3
POWER STEERING PUMP
INDEX
page
DESCRIPTION AND OPERATION
POWER STEERING PUMP
3
DIAGNOSIS AND TESTING
POWER STEERING PUMP FLOW RATE AND
PRESSURE TEST 3
PUMP LEAKAGE DIAGNOSIS . . . . . . . . . . . . . . . 4
SERVICE PROCEDURES
POWER STEERING PUMP—INITIAL
OPERATION 4
REMOVAL AND INSTALLATION
P-SERIES PUMP RESERVOIR . . . . . . . . . . . . . . . . 8
page
POWER STEERING PUMP—DIESEL ENGINE . . . 6
POWER STEERING PUMP—GASOLINE
ENGINE 4
PUMP PULLEY 8
SPECIFICATIONS
TORQUE CHART . . . . . . . . . . . . . . . . . . . . . 9
SPECIAL TOOLS
POWER STEERING PUMP 1 0
D E S C R I P T I O N A N D O P E R A T I O N
POWER STEERINI P U i P
The Saginaw P-Series pump is used on these vehi­
cles (Fig. 1).
Hydraulic pressure is provided for the power steer­
ing gear by the belt driven power steering pump. The
power steering pump is a constant flow rate and dis­
placement, vane-type pump.
The pump is connected to the steering gear via the
pressure hose and the return hose. The pump shaft
has a pressed-on pulley that is belt driven by the
crankshaft pulley.
Trailer tow option vehicles are equipped with a
power steering pump oil cooler. The oil cooler is
mounted to the radiator support.
NOTE; Power steering pumps are not interchange­
able with pumps installed on other vehicles.
Fig. 1 Saginaw Pump—P-Series
D I A G N O S I S A N D T E S T I N G
POWER STEERING PUMP FLOW RATE AND
PRESSURE TEST
The following procedure is used to test the opera­
tion of the power steering system on the vehicle. This
test will provide the flow rate of the power steering
pump along with the maximum relief pressure. Per­
form test any time a power steering system problem
is present. This test will determine i f the power
steering pump or power steering gear is not function­
ing properly. The following pressure and flow test is
performed using Pressure/Flow tester, Special Tool
6815 (Fig. 2).
9519-1
Fig. 2 Pressure Test Gauge
POWER STEERING PUMP FLOW AND
PRESSURE TEST PROCEDURE
(1) Check belt tension and adjust as necessary.
(2) Disconnect high pressure hose at gear or pump.
Use a container for dripping fluid.