Loader Bobcat 773. Manual — part 2
P–10650
A
vi
773 BICS Loader
Service Manual
FIRE PREVENTION
The loader has several components that are at high temperature under normal operating conditions. The primary source of
high temperatures is the engine and exhaust system. The electrical system, if damaged or incorrectly maintained, can be a
source of arcs or sparks.
Flammable debris (leaves, straw, etc.) must be removed regularly. If flammable debris is allowed to accumulate, it will increase
the fire hazard. The loader must be cleaned as often as necessary to avoid this accumulation. Flammable debris in the engine
compartment is a fire hazard when the loader is parked with a hot engine.
The spark arrestor muffler is designed to control the emission of hot particles from the engine and exhaust system, but the
muffler and the exhaust gases are still hot.
•
Do not use the Bobcat loader where exhaust, arcs, sparks or hot components can contact flammable material, explosive
dust or gases.
•
The engine compartment and engine cooling system must be inspected every day and cleaned if necessary to prevent fire
hazard and overheating.
•
Check all electrical wiring and connections for damage. Keep the battery terminals clean and tight. Repair or replace any
damaged part.
•
Check fuel and hydraulic tubes, hoses and fittings for damage and leakage. Never use open flame or bare skin to check
for leaks. Tighten or replace any parts that show leakage. Always clean fluid spills. Do not use gasoline or diesel fuel for
cleaning parts. Use commercial nonflammable solvents.
•
Do not use ether or starting fluids on this engine. It has glow plugs. These starting aids can cause explosion and injure you
or bystanders.
•
Always clean the loader and disconnect the battery before doing any welding. Cover rubber hoses, battery and all other
flammable parts. Keep a fire extinguisher near the loader when welding. Have good ventilation when grinding or welding
painted parts. Wear dust mask when grinding painted parts. Toxic dust or gas can be produced.
•
Stop the engine and let it cool before adding fuel. No smoking!
•
Use the procedure in the Operation & Maintenance Manual for connecting the battery.
•
Use the procedure in the Operation & Maintenance Manual for cleaning the spark arrestor muffler.
•
Know where fire extinguishers and first aid kits are located and how to use them.
A fire extinguisher is available from your Bobcat dealer. The fire extinguisher can be installed in the location shown [A].
SI06–0301
C
SERIAL NUMBER LOCATIONS
Always use the serial number of the loader when
requesting service information or when ordering parts.
Early or later models (identification made by serial
number) may use different parts, or it may be necessary
to use a different procedure in doing a specific service
operation.
LOADER SERIAL NUMBER
The loader serial number plate is located on the inside of
the left upright, above the grill [A].
Explanation of loader Serial Number:
XXXX
XXXXX
Production Sequence
(Series)
Model/Engine Version
The four digit Model/Engine Combination module number
identifies the model number and engine combination.
The five digit Production Sequence Number identifies the
order which the loader is produced.
ENGINE SERIAL NUMBER
The serial number (Item 1) [B] is located on the engine
block between engine oil fill and the injection pump.
DELIVERY REPORT
The Delivery Report must be filled out by the dealer and
signed by the owner or operator when the Bobcat loader
is delivered. The form contents must be explained to the
owner. Make sure it is filled out completely [C].
A
N–15176
773 BICS Loader
vii
Service Manual
B
P–04314
TIRES – The Bobcat loader is factory equipped with heavy duty flotation tires. See 773 Series Equipment for
available optional tires.
BUCKET – Several different buckets and other attachments are available for the Bobcat loader.
ROPS, FOPS – Roll Over Protective Structure per SAE J1040 and ISO 3471, and Falling Object Protective
Structure per SAE J1043 and ISO 3449, Level I. Level II is available. The Bobcat loader is base–equipped with
a standard operator cab as shown. Extra insulated cab is available as an option (Reduced noise level).
B–13544
BOBCAT LOADER IDENTIFICATION
B–13545
OPERATOR SEAT
FRONT LIGHTS
(OPTIONAL)
GRAB HANDLES
TILT CYLINDER
BUCKET
SAFETY TREAD
FRONT AUXILIARY
QUICK COUPLERS
(OPTIONAL)
BUCKET STEPS
SEAT BELT
REAR AUXILIARY
QUICK COUPLERS
(OPTIONAL)
STEERING LEVERS
REAR WINDOW
(OPTIONAL)
REAR GRILL
TAIL LIGHTS
(OPTIONAL)
REAR LIGHTS
(OPTIONAL)
REAR DOOR
OPERATOR CAB
(ROPS & FOPS)
LIFT ARM LINK
LIFT ARM
LIFT CYLINDER
TIRES*
STABILIZER
ROD
*
SEAT BAR
LIFT ARM
SUPPORT DEVICE
viii
773 BICS Loader
Service Manual
773
Service
Manual
#6900092–Contents
Section
PREVENTIVE
MAINTENANCE
773 BICS Loader
–1–1–
Service Manual
PREVENTIVE MAINTENANCE
AIR CLEANER SERVICE
Replacing Filter Element
1–14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ALTERNATOR BELT
Adjustment
1–22
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BOB–TACH
Inspection And Maintenance
1–36
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DRIVE BELT
Adjusting The Drive Belt Equipped With The Fixed Drive Idler
1–29
. . . . . . .
Adjusting The Drive Belt Equipped With The Spring Loaded Drive Idler 1–31
Drive Belt Replacement
1–32
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE COOLING SYSTEM
Cleaning The Cooling System
1–20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking The Coolant Level
1–20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing The Coolant
1–21
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE LUBRICATION SYSTEM
Checking Engine Oil
1–18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Oil And Filter
1–18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FAN GEARBOX
Checking And Maintaining
1–22
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FINAL DRIVE TRANSMISSION (CHAINCASE)
Checking And Adding Oil
1–28
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing Oil From The Chaincase
1–28
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL SYSTEM
Filling The Fuel Tank
1–16
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Filter
1–16
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Specifications
1–16
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing Air From The Fuel System
1–17
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
HYDRAULIC/HYDROSTATIC SYSTEM
Breather Cap
1–25
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking And Adding Fluid
1–23
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Hydraulic/Hydrostatic Filter
1–23
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Hydraulic Fluid
1–24
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LIFT ARM SUPPORT DEVICE
Installing Lift Arm Support Device
1–7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing Lift Arm Support Device
1–7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LIFTING AND BLOCKING THE LOADER
Procedure
1–4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LIFTING THE LOADER
Single Point Lift
1–6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LUBRICATION OF THE BOBCAT LOADER
Procedure
1–33
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page
Number
Continued On Next Page
Revised Jan. 99
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