Usage:
1. Turn the machine all of the way to the left.
2. Lower the bucket to the ground and put blocks in front and behind the wheels.
3. Remove the bolt and washer from pin (1). Remove pin (1) from the top of the frame.
4. Turn the steering wheel to the right several turns to pull rod (2) into the steering cylinder.
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Keep hands away from the brake chamber area until the emergency brake has been released. |
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5. Push the emergency brake control (found on the dash) to release the emergency brake.
NOTE: Shop air pressure of 70 psi (4.9 kg/cm2) or (480 kPa) can be used to activate the parking brake chamber.
6. Remove the cotter pin and pin (3).
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Open the drain valve on the air tank and remove the air pressure from the system before any air lines are disconnected. |
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7. Disconnect air line (7) for the brake chamber at tube connection (6). Remove air line (7) from the brake chamber.
8. Remove bolts (4) that hold bracket (5) in position.
9. Disconnect bracket (5) from brake chamber (8) and remove the air chamber and bracket from the machine.
10. Put brake chamber (8) in position between the frame and transmission. Connect bracket (5) to the brake chamber.
11. Install bolts (4) to hold bracket (5) in position.
12. Connect air line (7) to the brake chamber and tube connection (6).
13. Close the drain valve on the air tank. Start the engine to increase the pressure in the air system. Stop the engine.
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Keep hands away from the brake chamber area until the rod is in position. |
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14. Pull the emergency brake control (found on the dash) to push the rod into position. Install pin (3) and the cotter pin.
15. Turn the steering wheel several turns to move rod (2) into position. Make sure the washers are installed on both sides of the rod. Install pin (1) and the bolt and washer that hold the pin.
16. Make an adjustment of the emergency brake. See EMERGENCY AND PARKING BRAKE ADJUSTMENT in TESTING AND ADJUSTMENT in TESTING AND ADJUSTING for this procedure.
Disassemble Emergency And Parking Brake Chamber
start by:
a) remove emergency and parking brake chamber
1. Remove yoke (1) and two adjusting nuts (2) from the rod.
2. Remove two bolts (3) one on each side of chamber. Remove retaining ring (4) from the rubber boot.
3. Install the chamber in tooling (A). Put force down on the top of the chamber with thelpuller screw. Remove the remainder of bolts (5) around the base of the chamber.
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The large spring inside of chamber is under 900 lb. (4000 N) force. |
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4. Gradually release spring (6) as the puller screw is turned counterclockwise until all spring force is gone. Remove the chamber from tooling (A).
5. Remove base assembly (7), the spring and rod assembly (8) from cylinder (9).
6. Remove large and small springs (10) from the rod. Remove felt and rubber seals (11) from the bases of the rod. Inspect the two seals and make replacements if necessary.
7. Remove rubber boot (13) and O-ring seal (12) from the base assembly. Check the condition of the seal. If the seal has damage, use new parts for replacement.
Assemble Emergency And Parking Brake Chamber
1. Install a new O-ring seal (1) on base assembly. Install rubber boot (2) on base assembly.
2. Install a new rubber and felt seal (4) on base of the rod. Install small and large springs (3) on the rod.
3. Install base assembly (5), spring and rod assembly (6) into cylinder (7).
4. Put chamber into position in tooling (A) and put it under compression. Install all but two of the bolts (8). Remove chamber from tooling (A).
5. Install the other two bolts (10) on each side of chamber. Install retaining ring (9) on the rubber boot.
6. Install two adjusting nuts (12). Install yoke (11) on the rod.
end by:
a) install emergency and parking brake chamber