Loader Bobcat 853, 853H. Manual - part 15

LIFT CYLINDER(S)

Checking The Lift Cylinder

Lower the lift arms. Stop the engine. Raise the seat bar.

Check only one cylinder at a time. Disconnect the hose
(Item 1) [A] which goes to the base end of the lift cylinder.

Install a plug (Item1) [B] in the hose and tighten.

Engage the parking brake. Lower the seat bar. Start the
engine and push the top (toe) of the lift pedal.

If there is any leakage from the open port, remove the lift
cylinder for repair. Repeat the procedure to check the
other lift cylinder.

Removal And Installation

Engage the parking brake.

Raise the lift arms so the rod end retaining pin will clear
the loader frame for removal.

Have a second person put jackstands under the
Bob–Tach to support the lift arms [C]. Stop the engine.

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

Remove the retaining bolt and nut (Item 1) [D] from the
retaining pin on the rod end of the cylinder.

Installation: Tighten the retainer bolt and nut to 18–20
ft.–lbs. (24–27 Nm) torque.

Remove the retaining pin from the rod end of the cylinder.

Diesel fuel or hydraulic fluid under pressure
can penetrate skin or eyes, causing serious
injury or death. Fluid leaks under pressure may
not be visible. Use a piece or cardboard or
wood to find leaks. Do not use your bare hand.
Wear safety goggles. If fluid enters skin or eyes,
get immediate medical attention from a
physician familiar with this injury.

W–2072–0496

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CD–15067

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C

CD–15066

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CD–15069

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LIFT CYLINDER(S) (Cont’d)

Removal And Installation (Cont’d)

Remove the retaining bolt and nut (Item 1) [A] from the
retaining pin on the base end of the cylinder.

Installation: Tighten the retainer bolt and nut to 18–20
ft.–lbs. (24–27 Nm) torque.

Remove the retaining pin from the base end of the
cylinder [B].

Slide the cylinder forward for clearance to disconnect the
hoses.

Mark the hoses for correct installation.

Disconnect the two hoses (Item 1) [C] from the lift
cylinder.

Remove the lift cylinder.

Always clean up spilled fuel or oil. Keep heat,
flames, sparks or lighted tobacco away from
fuel and oil. Failure to use care around
combustibles can cause explosion or fire
which can result in injury or death.

W–2103–1285

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CD–15070

1

C

CD–15073

1

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CD–15072

Disconnect the hose (Item 1) [A] which goes to the base
end of the tilt cylinder.

Put a plug in the hose and tighten.

Connect a hose between cylinder port and into a drain
pan.

Engage the parking brake. Lower the seat bar. Start the
engine and push the bottom (heel) of the tilt pedal. If there
is leakage from the open port, remove the tilt cylinder for
repair.

Removal And Installation

Remove the attachment. Roll the Bob–Tach fully forward
[B].

Stop the engine. Raise the seat bar.

Disconnect both hydraulic hoses (Items 1 & 2) [A].

Remove the retainer bolt and nut (Item 1) [C] from the rod
end pivot pin.

Installation:  Tighten the retainer nut to 18–20 ft.–lbs.
(24–27 Nm) torque.

Remove the grease fitting from the rod end pivot pin.

Remove the rod end pivot pin (Item 1) [D].

TILT CYLINDER

Checking The Tilt Cylinder

Remove the attachment. Roll the Bob–Tach fully back.
Stop the engine. Raise the seat bar.

Diesel fuel or hydraulic fluid under pressure
can penetrate skin or eyes, causing serious
injury or death. Fluid leaks under pressure may
not be visible. Use a piece or cardboard or
wood to find leaks. Do not use your bare hand.
Wear safety goggles. If fluid enters skin or eyes,
get immediate medical attention from a
physician familiar with this injury.

W–2072–0496

A

CD–15074

1

2

C

CD–15076

1

D

P–03904

1

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CD–15075

TILT CYLINDER (Cont’d)

Removal And Installation (Cont’d)

Remove the retainer bolt and nut (Item 1) [A] from the
base end pivot pin.

Installation: Tighten the retainer nut and bolt to 18–20
ft.–lbs. (24–27 Nm) torque.

W–2103–1285

Always clean up spilled fuel or oil. Keep heat,
flames, sparks or lighted tobacco away from
fuel and oil. Failure to use care around
combustibles can cause explosion or fire
which can result in injury or death.

Remove the base end pivot pin (Item 1) [B].

Remove the tilt cylinder from the loader.

Rod End Seal

Remove the old seal (both sides) from the rod end of the
tilt cylinder.

Install the new seals with the lip facing out [C].

Use two pieces of shim stock to protect the new seals
during installation.

Install the rod end of the tilt cylinder into the Bob–Tach
[D].

Be careful not to damage the new seals during
installation.

A

CD–15077

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C

P–03911

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P–03910

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CD–15078

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