Bleeding Telescoping Cylinders

IMPORTANT: Bleeding the telescoping cylinders can only be accomplished when the front cylinder is allowed to reach full extension of the piston rod. Cylinders left un-bled can cause basket to come down causing basket damage.

NOTE: If basket extension is pinned in the intermediate field position, complete Steps 1 and 3. If machine does not have intermediate field position, proceed to Step 4.

1. Disconnect front and rear upper arm assemblies (A) from lid lift frame (B) by removing screw (C).


A-Rear Upper Arm Assemblies
B-Lid Lift Frame
C-Screw

N42138HE

OUO6043,0001528 -19-25OCT01-1/6

2. Remove front and rear lid lift frames (A).


A-Lid Lift Frames

N89165G1

Rear Lid Lift Frame

OUO6043,0001528 -19-25OCT01-2/6

3. Unpin telescoping cylinder at top by removing cotter pin (A) and round head pin (B).


A-Cotter Pin
B-Round Head Pin

N89114J1

OUO6043,0001528 -19-25OCT01-3/6

4. Loosen bleed screw (A) on rear cylinder 1/4 to 1/2 turn.

5. Start engine and operate at slow idle.

IMPORTANT: If basket extension is pinned in intermediate position, hold the cylinder piston rods out from basket extension to prevent them from contacting top of extension when raising.

6. Slowly extend the telescoping cylinders using basket extension switch (B).

7. Continue to press basket extension switch until front cylinder is fully extended and a solid flow of oil (without bubbles) is present at bleed screw.

8. Tighten bleed screw.


A-Bleed Screw
B-Basket Extension Switch

N90136D1
N42167OL

OUO6043,0001528 -19-25OCT01-4/6

9. Pin cylinders (front and rear) to extension using round head pin (B) and cotter pin (A).

NOTE: On baskets with extension in intermediate position 3 people will be needed to perform this task. One person in operator's station holding basket telescoping switch. One person at each cylinder, pushing down on rod until it can be pinned in position.


A-Cotter Pin
B-Round Head Pin

N89114J1

OUO6043,0001528 -19-25OCT01-5/6

NOTE: On baskets with extensions in intermediate position, complete Steps 10 and 11.

10. Install front and rear lift frames.

11. Insert upper arm assembly (A) into lid lift frame (B). Reinstall screw (C) and lock nut. Tighten nut just enough to retain nut on screw but still allow parts to rotate on screw. DO NOT OVERTIGHTEN. Upper arm MUST pivot freely.


A-Upper Arm Assembly
B-Lid Lift Frame
C-Screw

N42138HE

OUO6043,0001528 -19-25OCT01-6/6