953C TRACK-TYPE LOADER HYDRAULICS Caterpillar


Hydraulic Pump

Usage:

Rotation is clockwise when seen from drive end.

Type of pump: Vane

For test, use SAE 10W oil at 65°C (150°F).

NOTE: Values used for test are less than for a new pump to account for normal wear.

Test at Full Speed

Output ... 130 liter/min (34 U.S. gpm)

At a pressure of ... 690 kPa (100 psi)

With pump at ... 2200 rpm

With engine at ... 2200 rpm

Output ... 117 liter/min (31 U.S. gpm)

At a pressure of ... 6900 kPa (1000 psi)

With pump at ... 2200 rpm

With engine at ... 2200 rpm

Test at Half Speed

Output ... 60 liter/min (16 U.S. gpm)

At a pressure of ... 690 kPa (100 psi)

With pump at ... 1100 rpm

With engine at ... 1100 rpm

Output ... 54 liter/min (14 U.S. gpm)

At a pressure of ... 6900 kPa (1000 psi)

With pump at ... 1100 rpm

With engine at ... 1100 rpm

(1) Torque for four bolts ... 53 ± 5 N·m (39 ± 4 lb ft)

(2) Torque for four bolts ... 229 ± 23 N·m (168 ± 17 lb ft)

Caterpillar Information System:

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