SEAL-O-RING 0975345 - Caterpillar

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Check the height of the sprockets in order to make sure that there is enough tension on the chains. The proper tension will ensure that the counterweight is securely supported. The height of dimension (C) should be 813 mm (32 inch).
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Remove seven bolts from the cover (6) .
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Open cover (6) and lock the cover into the OPEN position. Use bar (7) in order to support the cover while the cover is in the OPEN position.
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Remove six counterweight mounting bolts and washers.
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(8) Counterweight (9) Retaining pin
Move control lever (4) upward in order to raise the counterweight (8) until access to the retaining pins (9) can be gained.
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(9) Retaining pin (10) Extension
Use a ratchet wrench and an extension (10) in order to rotate each retaining pin (9). Retaining pins (9) require ninety degrees of rotation. The retaining pins (9) are now in the UNLOCKED position.
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(8) Counterweight
When the removal cylinder is used to lower the counterweight, the counterweight can wedge against the machine frame which stops the downward movement of the counterweight. Since the removal cylinder continues to retract and the counterweight stopped, slack in the chain for the removal cylinder occurs.The counterweight can suddenly fall due to the slack in the chain which could result in personal injury or death.Monitor the lowering of the counterweight when the counterweight is being lowered with the removal cylinder. If the removal cylinder is retracted and the downward movement of the counterweight stops, stop the lowering procedure and correct the wedging of the counterweight against the machine frame.
Move control lever (4) downward in order to lower counterweight (8) onto supports on the ground.
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(8) Counterweight (11) Chains (12) Pins (13) Nuts (14) Cotter pins
Remove cotter pins (14). Loosen nuts (13) .
Remove pins (12) in order to disconnect chains (11) from counterweight (8) .
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(11) Chain (15) Bracket (16) Washer (17) Bolt (18) Pin (19) Bolt (20) Washer
Pin (18) should be located in the storage box. Remove pin (18) from the storage box.
Install pin (18) into chains (11) .
Install bolts (19) and washers (20) in order to attach pin (18) to bracket (15) .
At the end of pin (18), install washer (16) and bolt (17) .
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Fasten a proper rated cable with shackles to the lifting eyes on the counterweight.
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Use an appropriate lifting device in order to put the counterweight on suitable supports.Counterweight Installation
Perform the installation procedure in reverse order.Note: Make sure that you remove pin (18), bolt (17), washer (16), bolt (19), and washer (20). Return these parts to the storage box.Note: Before you install the counterweight mounting bolts, make sure that the retaining pins are in the LOCKED position and that the counterweight is securely held on the retaining pins. There should be a slight amount of slack on the chains.Tighten the counterweight mounting bolts to a torque of 2700 300 N m (1990 220 lb ft).