Content .. 78 79 80 81 ..

Loader Bobcat 773. Manual - part 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.

P–03956

P–03955

–6–36–

773 BICS Loader

Service Manual

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.

P–03886

773 BICS Loader

–6–37–

Service Manual

P–03884

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

Content .. 78 79 80 81 ..