Motor And Pump Assembly; Installation - Hudson 480-490 Series Service Manual

480-490 series
Table of Contents

Advertisement

72 BODY MANUAL
FIGURE 104

MOTOR AND PUMP ASSEMBLY

REMOVAL:
1. After all fluid has been completely removed from the
hydraulic system and while the car is still raised on the
hoist, remove the two nuts (E), Figure 103, and lockwash-
ers from the lower motor and pump assembly support.
2. Lower the car and remove the rear seat cushion and seat
back. (See Page 82 for seat back removal.) Remove motor
and pump assembly cover.
3. Disconnect battery cable and wires at motor solenoid
(F), Figure 104.
4. Disconnect ground strap at B on motor.
5. Disconnect hydraulic inlet and outlet flexible hoses at
H and remove vent tube (C) from rear of pump.
6. Remove nut and lockwasher from upper motor support
(D) and lift complete unit up and out of well.

INSTALLATION:

To install, reverse procedure of removal.
FOLDING TOP OPERATING
VALVE AND SWITCH ASSEMBLY
The top operating valve and switch assembly, Figure 105,
is mounted on a support under the left end of the instru-
ment panel. The valve connects the
FIGURE 105
motor and pump assembly to the top or bottom of the
double action top operating cylinders, depending on
the position of the control knob on the instrument
panel. Operation of the valve is controlled by a push-
pull knob at the left of the steering column. At the
extreme end of the knob operation, in and out, the
valve switch is closed to activate the motor and pump
assembly.
FIGURE 106
With the operating knob pulled out, fluid from the
pump is directed to the top of the cylinders, and fluid
from the bottom of the cylinders is returned to the fluid
reservoir, Figure 106. With the valve in this position,
the top is lowered. When the knob is released, springs
inside the valve return it to a neutral position, Figure
107.

Advertisement

Table of Contents
loading

This manual is also suitable for:

480 series490 series

Table of Contents