938G Series II Wheel Loader and IT38G Series II Integrated Toolcarrier Braking System Vane Pump (Braking) Caterpillar


Vane Pump (Braking)
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938G Series II Wheel Loader and IT38G Series II <BR>Integrated Toolcarrier Braking System [RENR6073]
BRAKING SYSTEM
PUMP GP
938G Series II Wheel Loader and IT38G Series II Integrated Toolcarrier Braking System Vane Pump (Braking)



Illustration 1g00274353

(1) Section for Steering System (Shaft End). (2) Section for Hydraulic System (Center Section). (3) Section for Brake System (Cover End).




Illustration 2g00274354

Brake Pump

The rotation of the shaft is counterclockwise when the pump is viewed from the drive end.

This brake pump is a vane type pump.

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

Test At Full Speed

Output ... 22 L/min (5.8 US gpm)
Pressure ... 690 kPa (100 psi)
Pump speed ... 2600 rpm
Engine speed ... 2390 rpm
Output ... 19 L/min (5 US gpm)
Pressure ... 6900 kPa (1000 psi)
Pump speed ... 2600 rpm
Engine speed ... 2390 rpm

Test At Half Speed

Output ... 10 L/min (2.6 US gpm)
Pressure ... 690 kPa (100 psi)
Pump speed ... 1300 rpm
Engine speed ... 1195 rpm
Output ... 9 L/min (2.4 US gpm)
Pressure ... 6900 kPa (1000 psi)
Pump speed ... 1300 rpm
Engine speed ... 1195 rpm

(4) Torque for the two bolts ... 34 ± 3 N·m (25 ± 2 lb ft)

(5) Torque for the four bolts ... 54 ± 7 N·m (40 ± 5 lb ft)

(6) 1U-2816 Spring

Length under test force ... 14.7 mm (.58 inch)
Test force ... 192 ± 14 N (43 ± 3 lb)
Free length after test ... 29.7 mm (1.17 inch)
Outside diameter ... 29.65 ± 0.52 mm (1.167 ± .020 inch)

Reference: For the specifications for the steering pump, refer to Specifications, RENR6070, "938G II Wheel Loader and IT38G II Integrated Toolcarrier Steering System".

Reference: For the specifications for the implement hydraulic pump, refer to Specifications, RENR6076, "938G II Wheel Loader and IT38G II Integrated Toolcarrier Hydraulic System".

Information System:

938G Series II Wheel Loader and IT38G Series II Integrated Toolcarrier Hydraulic System Hydraulic Fan System
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