Loader Bobcat 773. Manual - part 117

–10–32–

Service Manual

773 BICS Loader

CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC) (W/PUSH BUTTON FLOAT)(Cont’d)

Controller Connector And Wire Identification

Revised June 01

P/N

PIN

DESCRIPTION

C–430

CONNECTOR, METRI–PACK

Orange/White

  A

SWITCHED BATTERY POWER

Black

  B

GROUND

C–431

MALE, 10–WAY

Brown/Dk. Green

  A

SIGNAL FROM LIFT CONTROL

  HANDLE INPUT

Purple/Yellow

  B

FLOAT SWITCH ON/OFF

Pink/Dk. Green   C

SIGNAL FROM TILT CONTROL

  HANDLE INPUT

Dk. Blue

  D

TILT HIGH REFERENCE TO

  RESISTIVE INPUTS

Dk.Blue/White

  E

TILT LOW REFERENCE TO

  RESISTIVE INPUTS

Dk.Blue/White

  F

LIFT LOW REFERENCE TO

  RESISTIVE INPUTS

Dk. Blue

  G

LIFT HIGH REFERENCE TO

  RESISTIVE INPUTS

Purple/White

  H

BICS INPUT STATUS

Purple/Red

  J

AHC STATUS OUTPUT

  K

OPEN

P/N

PIN

DESCRIPTION

C–428

CONNECTOR, 8 WAY PLUG (LIFT) (TOP

  ACTUATOR)

Dk.Blue/White

  1

LOW REFERENCE TO RESISTIVE INPUTS

Lt. Green/White   2

SIGNAL FROM LIFT ACTUATOR

Dk. Blue

  3

HIGH REFERENCE TO RESISTIVE INPUTS

  4

OPEN

Brown/White

  5

LIFT SPOOL ACTUATOR MOTOR (–)

  6

OPEN

  7

OPEN

Brown/Yellow

  8

LIFT SPOOL ACTUATOR MOTOR (+)

C–429

CONNECTOR, 8 WAY PLUG (TILT) (BOTTOM

  ACTUATOR)

Dk. Blue/White

  1

LOW REFERENCE TO RESISTIVE INPUTS

Lt. Blue/White

  2

SIGNAL FROM TILT ACTUATOR

Dk. Blue

  3

HIGH REFERENCE TO RESISTIVE INPUTS

  4

OPEN

Pink/White

  5

TILT SPOOL ACTUATOR MOTOR (–)

  6

OPEN

  7

OPEN

Pink/Yellow

  8

TILT SPOOL ACTUATOR MOTOR (+)

C–428

C–430

C–429

C–431

CONTROL HANDLE (ADVANCED HAND CONTROL)
(AHC) (W/PUSH BUTTON FLOAT) (Cont’d)

AHC/PWM Controller Removal And Installation

Raise the operator cab. (See Page 1–1.)

Remove the four mounting bolts (Item 1) [A] from the
controller.

Disconnect the wiring harness connectors (Item 2) [A]
from the controller.

Remove the controller from the loader.

Test

•

The wiring harness connectors must be connected to
the controller [A].

•

Take voltage measurements by probing into wires near
the controller shown in figure [A]. All connectors must
remain plugged into their respectful harness.

•

Turn the key to the ON position (Item 1) [B] with the
engine OFF.

•

Turn the switches ON to get their appropriate readings.
(See chart listed below for switch locations.)

•

Press the auxiliary hydraulic switch (Item 2) [B] twice.
Both Green lights will be ON. 

•

For individual voltage readings see Page 10–16.

Key Switch

Item 1 [B]

Auxiliary Hydraulic Switch

Item 2 [B]

Momentary Light

Item 3 [B]

Detent Light

Item 4 [B]

High Flow Switch

Item 5 [B]

Proportional Flow Switch 

Item 1 [C]

Detent Switch

Item 2 [C]

Rear Aux. Switch (Base & Rod)

Item 3 [C]

A

N–17777

1

1

2

B

P–10466

N–17919

1

2

4

5

3

C

P–13254

Left

Right

Steering

Lever

Steering

Lever

Control

Control

P–13255

3

2

1

Service Manual

–10–33–

773 BICS Loader

Revised Nov. 01

1

C

N–22803

2

1

1

D

N–22790

A

P–16581

1

–10–34–

Service Manual

773 BICS Loader

CONTROL HANDLE

 

(ADVANCED HAND CONTROL)

(AHC) W/PUSH BUTTON FLOAT (Cont’d)

Handle Sensor Removal And Installation

To remove the handle sensor, slide the rubber handle cover
(Item 1) [A] up the handle.

Disconnect the loader control harness (Item 1) [B] from the
handle control harness.

Using a small screwdriver remove the handle control
electrical connector from the clip (Item 1) [C] by pushing
the connector down out of the connector clip (Item 2) [C].

Using an allen wrench, remove one of the two mounting
screws (Item 1) [D] from the handle sensor.

Installation: Tighten the handle sensor mounting screws
to 85 in.–lbs. (9,6 Nm) torque.

Revised June 01

B

N–22797

1

A

N–22793

2

P–16580

1

3

3

3

1

2

C

P–16576

D

N–22799

1

Service Manual

–10–35–

773 BICS Loader

CONTROL HANDLE

 

(ADVANCED HAND CONTROL)

(AHC) W/PUSH BUTTON FLOAT (Cont’d)

Handle Sensor Removal And Installation (Cont’d)

Remove the two plastic spacers (Item 1) [A] and the metal
spacer (Item 2) [A] from the handle sensor.

Remove the top mounting bolt (Item 1) [B] from the handle
sensor.

Remove the handle sensor (Item 1) [C] from the handle
assembly.

NOTE: The sensor (Item 1) [C] can only be replaced as

a complete assembly.

Check the spacers (Item 2) [C] and screws (Item 3) [C] and
replace as needed.

Installation: When installing the handle sensor into the
control handle, check the routing of the switch handle wire
harness (Item 1) [D] to assure proper return of the control
handle to neutral and minimize harness movement.

Revised June 01

B

P–16574

1