Loader Bobcat 773. Manual - part 39

STEERING LINKAGE

Removal And Installation

Remove the nut (Item 1) [A] from the end of the centering
spring shoulder bolt (Item 2) [A].

Remove the shoulder bolt/spring assembly.

Installation: Tighten the centering spring shoulder bolt
and a NEW lock nut to 25–28 ft.–lbs. (34–38 Nm) torque.

Slide the plate (Item 1) [B] to the right and remove it from
the two guide pins (Item 2) [B].

NOTE: The two guide bushings (Item 3) [B] will be

loose and can fall out of the plate (Item 1) [B]
as soon as it is removed from the guide pins
(Item 2) [B].

The centering plate/centering spring assembly consists
of the following parts; shoulder bolt (Item 1), [C], shoulder
bushings (Item 2) [C], spring (Item 3) [C], lock nut (Item
4) [C], centering plate (Item 5) [C] and guide bushings
(Item 6) [C].

Earlier Models:

When servicing early model machines, order and install
new parts to include a bolt (Item 1) [D], washer (Item 2)
[D], spacer tube (Item 3) [D], nut (Item 4) [D] and
bushings (Item 5) [D], See parts manual for correct part
numbers.

Revised May 98

A

P–03729

2

1

C

P–03735

2

3

2

6

5

4

1

EARLY MODELS

D

N–16758

LATER MODELS

1

2

3

4

5

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773 BICS Loader

Service Manual

B

P–03736

3

2

2

1

1

D

P–04069

1

1

3

2

STEERING LINKAGE (Cont’d)

Removal And Installation (Cont’d)

If the surface of any of the four pintle cams (Item 1) [A]
are worn, loosen the bolt (Item 2) [A] and rotate the cams
1/4 turn.

Tighten the bolts to 45–50 ft.–lbs. (62–68 Nm) torque.

NOTE: When replacing the old style pintle levers

(Item 3) [A], wear cams (Item 1) [A] and cam
bolts (Item 2) [A]; order and install the latest
style parts. See the parts manual for correct
part numbers.

Revised May 98

Remove the nut (Item 1) [B] from the torsion
bushing/linkage bar. The bolts is threaded into the linkage
bar, remove the bolt from underneath the pintle lever.

Installation:  Tighten the bolt to 11–13 ft.–lbs. (21–25
Nm) torque, then tighten the nut to 21–25 ft.–lbs. (28–33
Nm) torque.

Remove the linkage bar (Item 1) [C] and remove the
torson bushing (Item 2) [C].

Remove the nuts (Item 1) [D] from both shock absorber
ball joint ends.

Remove the shock absorbers.

Installation:  Tighten the nuts to 25–28 ft.–lbs. (34–38
Nm) torque.

Remove the nuts (Item 2) [D] from the linkage bar
mounting bolt. The bolts (Item 3) [D] are threaded into the
linkage bars, remove the bolts (Item 3) [D].

NOTE: Photo’s may appear different but the

procedure is the same.

The torsion bushings can now be removed from the
steering bell cranks.

Installation: Tighten the bolts to 11–13 ft.–lbs. (21–25
Nm) torque, then tighten the nuts to 21–25 ft.–lbs. (28–33
Nm) torque.

The linkage and the centering plate must be readjusted
for neutral after the components have been reassembled.
See Page 3–12 for the neutral adjustment procedure.

A

P–03733

1

2

2

1

3

1

2

C

P–03734

773 BICS Loader

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B

P–03733

1

STEERING LINKAGE (Cont’d)

Steering Linkage Adjustment

Put jackstands under the front axles and rear
corners of the frame before running the engine
for service. Failure to use jackstands can allow
the machine to fall or move and cause injury or
death.

W–2017–0286

Lift and block the loader. (See Page 1–1.)

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

Connect the remote start switch (MEL1429). (See Page
1–1.)

Pre–load tension in the torsion bushings must be
removed before adjusting the steering linkage.

Loosen the nut (Item 1) [A] 3 to 4 turns, then loosen the
bolt (Item 2) [A]. The bolt (Item 2) [A] is threaded into the
linkage bar (Item 3) [A]. The bolt (Item 2) [A] must be
loosened enough to allow the torsion bushing to turn
freely between the steering bellcrank and the linkage bar.

Loosen the nut (Item 1) [B] 3 to 4 turns, then loosen the
bolt (Item 2) [B]. The bolt (Item 2) [B] is threaded into the
linkage bar (Item 3) [B]. The bolt (Item 2) [B] must be
loosened enough to allow the torsion bushing to turn
freely between the pintle arm and the linkage bar.

Move the right side steering lever to the rear and install
a 3/8 inch (10 mm) thick spacer (Item 1) [C] between the
pintle arm cam (Item 2) [C] and the centering block (Item
3) [C].

Move the right side steering lever forward and install a
15/16 inch (24 mm) thick spacer (Item 1) [D] between the
center plate (Item 2) [D] and the mounting plate (Item 3)
[D].

This will allow the pintle arms to move freely while
adjusting the steering linkage for full forward travel speed.

Remove the 3/8 inch (10 mm) thick spacer (Item 1) [C].

Revised Jan. 99

Raise the lift arms and install an approved lift arm support
device. (See Page 1–1.)

Never work on a machine with the lift arms up
unless the lift arms are secured by an approved
lift arm support device. Failure to use an
approved lift arm support device can allow the
lift arms or attachment to fall and cause injury
or death.

W–2059–0598

A

P–04069

1

3

2

2

1

C

P–03724

3

1

2

D

P–03723

2

1

3

–3–10–

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Service Manual

B

P–03726

3

2

1

4

STEERING LINKAGE (Cont’d)

Steering Linkage Adjustment (Cont’d)

Before adjusting the linkage, check that the pintle arm
mounting bolt (Item 1) [A] is tight, 25–28 ft.–lbs. (34–38
Nm) torque and that there is no play between the pintle
arm (Item 2) [A] and the square pump shaft (Item 3) [A].
Also check that the cam mounting bolts (Item 4) [A] are
tight, 45–50 ft.–lbs. (62–68 Nm) torque.

Loosen the two bolts and nuts (Item 1) [B] on each
steering linkage bar.

Move the left hand steering lever to the full forward
position (until the lever hits the stop), then pull forward on
the left hand rear linkage bar until the pintle arm is rotated
to the front as far as possible [C]. Use a locking plier and
clamp the two linkage bars together.

Tighten the nuts and bolts to 25–28 ft.–lbs. (34–38 Nm)
torque.

Check the lever movement to make sure that the pintle
arm and the steering lever are both at full stroke at the
same time. This will allow for maximum forward speed.

Repeat the procedure for the right hand side linkage.

After both sides of the linkage have been adjusted, the
feel of both levers at full stroke should be the same.
Readjust the linkage if necessary.

Remove the spacer (Item 1) [D].

A

P–03730

4

2

1

3

4

C

P–03728

D

P–03723

2

1

3

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B

P–03727

1