CONTROL-VALVE 2854626 - Caterpillar

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Remove cotter pins (7), nuts (8), and bolts (10) in order to disconnect chain assemblies (9) from the counterweight.
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Use two people to remove support blocks (5). The weight of each support block is approximately 25 kg (55 lb). Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
A 4C-8217 55 mm Socket 1
6Y-6080 Torque Multiplier 1
8T-9293 Torque Wrench 1
Reaction Bar 1
Unexpected machine movement can cause injury or death.To avoid possible machine movement, place the hydraulic activation control lever to the locked position and attach a Special Instruction, SEHS7332, "Do Not Operate" or similar warning tag to the control lever.
Personal injury or death can occur from a counterweight falling during removal or installation.Do not allow personnel under or around the counterweight during removal or installation.Make sure that the lifting device is in good condition and is capable of handling the weight of the counterweight.
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Use two people to install support blocks (5). Place the support blocks in a vertical position. The weight of each support block is approximately 25 kg (55 lb).
Start the machine. Back up the machine against the counterweight. Align both support blocks with the grooves in the counterweight. The weight of the counterweight is approximately 11,612 kg (25,600 lb).
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Position chain assemblies (9) and install bolts (10). Install nut (8) and tighten the nut to a torque of 15 3 N m (11 2 lb ft). Install cotter pins (7).
Start the engine. Adjust the engine speed to one-third of full throttle engine speed.
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(3) Stop valves
(A) CLOSED position
(B) OPEN position
Move switch (1) upward to the ON position.
Place stop valves (3) in OPEN position (B).
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Move control lever (2) upward in order to raise the counterweight until access to the support blocks (5) can be gained. Rotate each support block (5) to the horizontal position, as shown.
Move control lever (2) downward in order to slowly lower the counterweight onto the support blocks.
Illustration 14 g00857982Note: In order to align the counterweight, it may be necessary to move the counterweight up and down.
Install bolts (4) that hold the counterweight to the frame of the machine. First, tighten the bolts by hand until the washers make contact with the counterweight. Move control lever (2) downward in order to allow the counterweight to settle on the support blocks. Use Tooling (A) to tighten bolts (4) to a torque of 2700 300 N m (2000 220 lb ft).
Place stop valves (3) in CLOSED position (B).
Move switch (1) downward to the OFF position.
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Close the right rear access door.