Loader Bobcat 773. Manual — part 83

NOTE: When making any repairs, replace the bronze

bushing (Item 5) [D] with a new style nylon
bushing. Clean all parts and assemble dry.
Do not lubricate. (See Parts Manual for
correct part numbers.)

BLOWER HOUSING/FAN GEARBOX (Cont’d)

Tension Pulley Removal And Installation

Loosen the idler pulley bolt [A].

Installation: Install the retainer bracket (Item 1) [A] for
the fan belt at the 3 o’clock position.

Remove the spacers, bolt and washer from the arm [B].

Installation: Put a small amount of grease around the
outside edge (Item 1) [C] on the grease rings.

Remove the bolt (Item 1) [B] & [D] from the idler pulley
pivot arm (Item 6) [D].

Remove the thrust washer (Item 2) [D], O–rings (Item 3)
[D] and spring (Item 4) [D].

Check all parts for damage or wear and replace them as
needed.

Reverse the removal procedure to install the tension
pulley.

Revised Jan. 99

A

P–00585

P–00580

1

C

P–00581

1

D

N–00303

3

3

1

2

5

4

6

773 BICS Loader

–7–11–

Service Manual

B

P–00582

1

BLOWER HOUSING/FAN GEARBOX (Cont’d)

Blower Fan Disassembly And Assembly

Remove the lock nut and spacer [A].

Installation: Tighten the nut to 45–55 ft.–lbs. (61–75 Nm)
torque.

Use the following procedure to remove the fan from the
shaft.

Install the nut (Item 1) [B] on the tapered shaft to protect
the shaft and threads.

Install the puller on the fan as shown [B].

As the center bolt (Item 2) [B] is tightened, periodically
strike the bolt head to loosen the fan from the shaft .

Remove the fan from the tapered shaft [C].

To remove the blower housing mounting plate, remove
the six bolts (Item 1) [D].

Wear safety goggles to prevent eye injury
when drilling or grinding.

W–2108–1186

AVOID INJURY OR DEATH

A

CD–09952

C

CD–09953

D

CD–09954

1

1

1

–7–12–

773 BICS Loader

Service Manual

B

P–03006

2

1

BLOWER HOUSING/FAN GEARBOX (Cont’d)

Blower Fan Disassembly And Assembly (Cont’d)

Installation: Clean the surface where the blower housing
contacts the loader frame. Put a bead of R.T.V. sealant on
the blower housing [A].

A

CD–08954

773 BICS Loader

–7–13–

Service Manual

1.

Seal

2.

Snap Ring (Small)

3.

Shims (1.0 inch O.D.)

4.

Bearing

5.

Shaft (Long)

6.

Shims (2.0 inch O.D.)

7.

Long Key

8.

Shaft (Short)

9.

Short Key

10.

Long Housing

11.

Nut

12.

Gear

13.

Washer

14.

Screw

15.

Square Shim

16.

Short Housing

17.

Bolt

18.

Snap Ring (Large)

19.

Cap

20.

Long Housing Assy.

21.

Short Housing Assy.

22.

Fill Plug

TS–01002

FAN GEARBOX

Identification

1

18

6

4

8

*16

12

4

13

14

18

19

1

2

4

4

13

14

11

15

3

12

20

3

5

2

7

10

12

20

17

9

21

* Individual Part not available. (See Note Page 7–15.)

22

*

Revised June 01

–7–14–

773 BICS Loader

Service Manual