789B Off-Highway Truck Air System and Brakes Caterpillar


Electric Drive Pump (Parking and Secondary Brake Release)

Usage:

789B 7EK



Illustration 1g00103607



Illustration 2g00290972

View A-A

Rotation of the pump is clockwise when the pump is viewed from the drive end.

Type of pump: Gear

Bench test requirements: SAE 10W oil must be stabilized at 65°C (150°F) before the test is performed.

Test information at 24 V:

Output ... 2.1 L/min (0.55 US gpm)
Test pressure ... 3792 kPa (550 psi)
Current draw ... 18 Amperes max

(1) Internal relief valve pressure setting ... 4481 kPa (650 psi)

(2) Torque for eight bolts ... 13.56 ± 0.68 N·m (10.001 ± 0.502 lb ft)

Caterpillar Information System:

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