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BLADE AS-U 4Z8851 - Caterpillar

4Z8851 BLADE AS-U Caterpillar parts BLADE
Alternative (cross code) number:
Caterpillar 4Z8851 BLADE AS-U
Weight: 0.42 pounds 0 kg.

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Disconnect delivery line (4) from the drive pump.
Install seal (11), half flanges (10), and blocking cover (D18) to the end of the delivery line with bolts (8) and washers (9).
Assemble and install seal (D17), adapter (D16), seals (D4), fitting (D12), seal (D11), plug (D10) and fitting (D5) on the drive pump by using half flanges (D15), bolts (D13) and washers (D14).
Illustration 8 g03656682
Swing motor (top view) (Typical Example)
(12) Makeup line
(13) Seal
(14) Adaptor
Disconnect makeup line (12) from adaptor (14) at the swing motor.
Assemble and install seals (D20), tee (D21), adapter (D19), seal (D4), and fitting (D5) to adaptor (14) at the swing motor.
Connect seal (13) and makeup line (12) to tee (D21).
Connect portable hydraulic tester (D) and test hoses between coupling assembly at the drive pump and coupling assembly at the swing motor.
Attach a 6000 kPa (870 psi) pressure gauge to pressure tap (15) to monitor negative flow control pressure for the drive pump.
Remove 311-1362 Vacuum Cap and install the filler plug for the hydraulic tank.
Attach a 41,368 kPa (6,000 psi) pressure sensor to pressure tap (1)

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