Chrysler New Yorker. Manual — part 278
CAUTION: When torquing the adjuster pinch bolt,
the following procedure must be followed to ensure
adequate retention of the adjuster is obtained. Not
following this procedure, could result in the Toe
Setting Adjustment changing and/or the separation
of the outer tie rod from the inner tie rod.
(7) After completion of the tie rod end installation
and the toe adjustment procedure, tighten adjuster
pinch bolt (Fig. 29) to a torque of 45 N·m (33 ft. lbs.).
Make sure the outer tie rod maintains correct per-
pendicular orientation while tightening the adjuster
pinch bolt.
SPECIFICATIONS
STEERING GEAR FASTENER TORQUE
SPECIFICATIONS
DESCRIPTION
TORQUE
POWER STEERING GEAR:
Crossmember Bolts . . . . . . . . . 58 N·m (43 ft. lbs.)
Tie Rod Steering Arm Nut . . . 37 N·m (27 ft. lbs.)
Tie Rod Steering Gear Bolt . . . 82 N·m (60 ft. lbs.)
Tie Rod Adjuster Pinch bolt . . 45 N·m (33 ft. lbs.)
POWER STEERING FLUID HOSES:
Hose Tube Nuts . . . . . . . . . . . 47 N·m (35 ft. lbs.)
SPECIAL TOOLS
POWER STEERING GEAR
Puller C-3894-A
Remover / Installer, Steering Shaft Roll Pin 6831A
300M
STEERING
19 - 37
REMOVAL AND INSTALLATION (Continued)
SPEED PROPORTIONAL POWER STEERING GEAR
INDEX
page
page
DESCRIPTION AND OPERATION
SPEED PROPORTIONAL POWER STEERING
GEAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
DIAGNOSIS AND TESTING
SPEED PROPORTIONAL STEERING SYSTEM . . 39
REMOVAL AND INSTALLATION
SOLENOID CONTROL VALVE . . . . . . . . . . . . . . 39
SPEED PROPORTIONAL POWER STEERING
GEAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
DESCRIPTION AND OPERATION
SPEED PROPORTIONAL POWER STEERING GEAR
Available on certain models of this vehicle is an
electronically controlled, speed-sensitive, variable-
effort, better known as speed-proportional, rack and
pinion power steering system. Speed proportional
power steering reduces the steering effort required
by the driver for low speed driving and parking
maneuvers. Also, at higher speeds, more steering
effort is required providing a more firm, responsive
feel to the power steering system.
With the engine running and the vehicle speed
between 0 mph (0 km/h) and approximately 20 mph
(32 km/h), minimum steering effort is required.
Between approximately 20 mph (32 km/h) and 60
mph (100 km/h), power steering effort will gradually
increase based upon vehicle speed. Above approxi-
mately 60 mph (100 km/h), maximum steering effort is
required by the speed proportional steering system.
Variable-effort power steering is provided by con-
trolling power steering fluid pressure at the power
steering gear. A solenoid control valve located on the
steering gear (Fig. 1) is used to control power steer-
ing gear return fluid pressure. The pressure is con-
trolled by varying the size of an orifice.
The variable-assist speed-proportional solenoid con-
trol valve is controlled by the Body Control Module
(BCM). The BCM receives the vehicle speed signal
sent from the Powertrain Control Module (PCM).
Upon receiving the vehicle speed signal from the
PCM, the BCM converts that speed signal into an
electrical current usable by the solenoid control valve
for controlling the variable effort of the power steer-
ing system.
Fig. 1 Variable-Assist Speed-Proportional Power Steering Gear
19 - 38
STEERING
300M
The solenoid control valve is a serviceable compo-
nent of the variable-effort, speed-proportional power
steering gear assembly. It is replaceable without
removal of the steering gear from the vehicle. Refer
to the specific component service in the section for
the required replacement procedures.
DIAGNOSIS AND TESTING
SPEED PROPORTIONAL STEERING SYSTEM
Diagnosis of the variable-effort speed-proportional
power steering system, if suspected of not functioning
properly, is done using the DRB scan tool. Refer to
the Body Diagnostic Manual to properly test and
diagnosis this steering system.
REMOVAL AND INSTALLATION
SPEED PROPORTIONAL POWER STEERING GEAR
If
the
variable-effort
speed-proportional
power
steering gear requires removal from the vehicle, refer
to the standard power steering gear removal proce-
dure in this section of the service manual. The only
difference in the removal and installation process is
the need to disconnect and connect the solenoid con-
trol valve wiring harness connector.
SOLENOID CONTROL VALVE
REMOVE
(1) Disconnect the solenoid control valve electrical
connector from the wiring harness at the power
steering gear end cap below the brake master cylin-
der (Fig. 2).
(2) Unclip the connector from the gear end cap.
(3) Remove the power steering pressure hose (Fig.
3) from the power steering gear.
(4) Remove the power steering return hose (Fig. 3)
from the power steering gear.
(5) Using a 1–5/16 inch crow foot, (Fig. 4) loosen
the solenoid control valve. Then by hand, remove the
solenoid control valve from the power steering gear.
INSTALL
(1) Inspect the O-ring seals on the solenoid control
valve to be sure they are not damaged. If the O-rings
are not damaged, moisten the O-rings using only
fresh clean Mopar Power Steering Fluid, or
equivalent.
(2) Install the solenoid control valve into the steer-
ing gear by hand, until it is fully seated into the
steering gear.
(3) Using the 1–5/16 inch crow foot as shown in
(Fig. 5) tighten the solenoid control valve to a torque
of 14 N·m (124 in. lbs.).
Fig. 2 Wiring Harness Connection
Fig. 3 Power Steering Hoses At Steering Gear
Fig. 4 Loosening Solenoid Control Valve
300M
STEERING
19 - 39
DESCRIPTION AND OPERATION (Continued)
(4) Reconnect the power steering hoses at the gear
(Fig. 3). Tighten both hose tube nuts to 31 N·m (275
in lbs.).
(5) Route the solenoid control valve wire harness
over the top of the gear and clip it into place on the
gear end cap.
(6) Connect the wiring harness connector. Be sure
the wiring harness connector seal is in good
condition before installing the connector in the
control module.
(7) Road test vehicle, referring to the test indi-
cated in the Body Diagnostic Manual, to confirm cor-
rect
operation
of
the
variable-assist
speed-
proportional power steering gear.
Fig. 5 Torquing Solenoid Control Valve
19 - 40
STEERING
300M
REMOVAL AND INSTALLATION (Continued)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст