Loader Bobcat 773. Instruction - page 80

FRONT LIGHTS

Removal And Installation

The front lights are mounted in the upper corners of the
operator cab [A].

Pry the rubber light mount free from the operator cab [B].

Pull the light down and remove the three mounting bolts
(Item 1) [C] from the instrument panel.

Disconnect the front light connector from the instrument
panel. Remove the front light from the operator cab.

Reverse the removal procedure to install the front light.

A

P–03956

C

P–03955

1

1

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773 BICS Loader

Service Manual

B

P–03995

RELAY SWITCHES

Location

The loader engine harness has relay switches switches
located beneath the engine air cleaner [A] & [B].

There are five switches (Item 1) [A] on the BOSS

®

equipped loader.

The switches are for the starter, switch power, glow plug,
brake and shutdown.

There are four switches (Item 1) [B] on the Standard
equipped loader.

The switches are for the starter, switch power, glow plug
and brake.

Remove the screw (Item 2) [A] & [B] from the mounting
tab on the switch and replace if the switch malfunctions.

A

P–03886

1

2

773 BICS Loader

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Service Manual

B

P–03884

1

2

ENGINE
SERVICE

773 BICS Loader

–7–1–

Service Manual

ENGINE SERVICE

AIR CLEANER

Removal And Installation

7–28

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

BLOWER HOUSING/FAN GEARBOX

Blower Fan Disassembly And Assembly

7–12

. . . . . . . . . . . . . . . . . . . . . . . . . .

Removal And Installation

7–8

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tension Pulley Removal And Installation

7–11

. . . . . . . . . . . . . . . . . . . . . . . . .

CRANKSHAFT AND BEARINGS

Removal And Installation

7–67

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Servicing The Crankshaft And Bearings

7–68

. . . . . . . . . . . . . . . . . . . . . . . . . .

CRANKSHAFT GEAR

Removal And Installation

7–61

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CYLINDER BORE

Checking The Cylinder Bore

7–72

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CYLINDER HEAD

Disassembly And Assembly

7–48

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal And Installation

7–47

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Servicing The Cylinder Head

7–59

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Top Clearance

7–59

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ENGINE

Engine Mount Replacement

7–34

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal And Installation

7–29

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ENGINE COMPRESSION

Checking

7–36

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ENGINE MUFFLER

Removal And Installation

7–5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ENGINE SPEED CONTROL

Removal And Installation

7–4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disassembly

7–4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FAN GEARBOX

Assembly

7–20

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Checking Backlash

7–25

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disassembly

7–15

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Identification

7–14

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FLYWHEEL

Flywheel Ring Gear

7–35

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal And Installation

7–35

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FUEL CAMSHAFT

Governor

7–60

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal And Installation

7–60

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page

Number

Continued On Next Page

Revised Jan. 99

–7–2–

773 BICS Loader

Service Manual

ENGINE SERVICE (Cont’d)

FUEL INJECTION NOZZLES

Checking The Injector Nozzle

7–46

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal And Installation

7–44

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FUEL INJECTION PUMP

Adjusting Shut–off Linkage

7–39

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Checking The Injection Pump

7–39

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal And Installation

7–40

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Timing The Injection Pump

7–43

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GLOW PLUGS

Checking The Glow Plugs

7–37

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal And Installation

7–38

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IDLER GEAR AND CAMSHAFT

Removal And Installation

7–56

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Servicing The Camshaft

7–57

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Servicing The Idler Gear And Shaft

7–58

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OIL PUMP

Checking Engine Oil Pressure

7–62

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Oil Pump Service

7–61

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal And Installation

7–61

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Relief Valve

7–60

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PISTON AND CONNECTING ROD

Connecting Rod Alignment

7–66

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal And Installation

7–63

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Servicing The Piston And Connecting Rod

7–64

. . . . . . . . . . . . . . . . . . . . . . . .

RADIATOR

Removal And Installation

7–6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ROCKER ARM AND SHAFT

Checking

7–53

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TIMING GEARS

Checking Backlash

7–59

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TIMING GEARCASE COVER

Removal And Installation

7–54

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TROUBLESHOOTING

Chart

7–3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VALVE CLEARANCE

Adjustment

7–53

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VALVE, VALVE SEAT AND GUIDE

Checking The Valve Guide

7–50

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reconditioning The Valve And Valve Seat

7–51

. . . . . . . . . . . . . . . . . . . . . . . .

Valve Spring

7–52

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

WATER PUMP

Disassembly And Assembly

7–73

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page

Number

Revised June 01

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