Operating Control System; Control Head; 5-1.1 Cap Assembly Removal; 5-1.2 Cap Assembly Installation - Big Joe PDSR 30 Installation, Operation, Maintenance & Repair Parts

5-1. CONTROL HEAD

5-1.1 Cap Assembly Removal

1. Engage the emergency stop switch and turn off
key switch.
2. Remove four screws, lift up cap and disconnect
harness from harness.

5-1.2 Cap Assembly Installation

1. Hold up cap in place and connect harness to har-
ness.
2. Position up cap on control head and secure with
four screws.
3. Disengage the emergency stop switch and turn
on key switch.

5-1.3 Control Head Removal

1. Remove the up cap as described in paragraph
5-1.1.
2. Disconnect harness from potentiometer and
switch.
3. Remove three screws, three lock washers and
three flat washers.
WARNING: When removing the control head in the
following steps, be sure to hold it in place
until the control harness is disconnected.
4. Remove the control head and handle.

5-1.4 Control Head Installation

1. Hold control head and handle in place and install
three screws, three washers and three flat wash-
ers.
2. Reconnect harness to potentiometer and switch .
3. Install the cap assembly as described in para-
graph 5-1.2.
5-1.5 Potentiometer Replacement
1. Remove the cap assembly as described in para-
graph 5-1.1.
2. Disconnect harness from potentiometer.
3. Remove screw, washer and control knob from
potentiometer.
BL-PDSR 30-0319 - 03-07-2019
SECTION 5

OPERATING CONTROL SYSTEM

4. Remove screw, washer and control knob from
other side of potentiometer.
5. Remove potentiometer from cover.
6. Position new potentiometer in cover.
7. Install control knob on potentiometer and secure
with screw, and washer.
8. Install control knob on the other side of poten-
tiometer and secure with screw and washer.
9. Connect harness to potentiometer.
10. Install the up cap as described in paragraph 5-1.2.
5-1.6

Belly-Button Switch Replacement

1. Remove the up cap as described in paragraph
5-1.1.
2. Disconnect harness from reversing switch wiring.
3. Remove reversing switch from potentiometer.
4. Position the new reversing switch in potentiome-
ter.
5. Reconnect harness to reversing switch wiring.
6. Install the up cap as described in paragraph
5-1.2.
5-1