216, 226 and 228 Skid Steer Loaders Machine Systems Caterpillar

Piston Pump (Work Tool)

Illustration 1	g00654784
(1) The 142-8918 Piston Pump

(1) Piston Pump (Work Tool)

Type of pump ... Variable displacement

Maximum displacement ... 40.5 cc (2.47 in³/rev)

Flow rate at HIGH idle ... 111 ± 10 L/min (29.3 ± 2.6 US gpm)

Standby pressure ... 2900 ± 300 kPa (420.6 ± 43.5 psi)

Margin pressure ... 2400 ± 200 kPa (348.1 ± 29.0 psi)

Cut off pressure ... 26000 kPa (3771 psi)

Hydrostatic Piston Pump

The Hydrostatic Piston Pump

Type of pump ... Variable Displacement

Maximum displacement ... 35 cc/rev (2.1 in³/rev)

Flow at HIGH idle ... 98.7 L/min (26.07 US gpm)

Cross Over Relief Valve Settings ... 38300 kPa (5555.0 psi)

The setting for the pump charge relief valve with a flow rate of 40 L/min (10.6 US gpm) ... 3300 ± 100 kPa (478.6 ± 14.5 psi)

The setting for the speed sensing valve with a 7.7 mm (0.30 inch) orifice and a flow rate of 40 L/min (10.6 US gpm) ... 1600 kPa (232.1 psi)

The rotation of the pump is clockwise when you view the pump from the shaft end.