2004/08/02 Caterpillar

Underground Articulated Truck:

AD30 (S/N: CXR1-UP)

Specifications, RENR6916, "AD30 Underground Articulated Truck Hydraulic System". This module is part of Service Manual, RENR4778 Volume 2.

Corrections have been made to the specifications for the gear pump. The information for the "Cover End Section (Brake and Pilot)", and the information for the "Drive End Section (Hoist and Brake Cooling)" is incorrect. Replace the information with the following correct information:

Cover End Section (Brake and Pilot)

Test at Full Speed:

Output ... 39.7 L/min (10.50 US gpm)

Pressure ... 690 kPa (100 psi)

Pump speed ... 2000 rpm

Engine speed ... 2000 rpm

Output ... 39.7 L/min (10.50 US gpm)

Pressure ... 6900 kPa (1000 psi)

Pump speed ... 2000 rpm

Engine speed ... 2000 rpm

Test at Half Speed:

Output ... 19.8 L/min (5.23 US gpm)

Pressure ... 690 kPa (100 psi)

Pump speed ... 1000 rpm

Engine speed ... 1000 rpm

Output ... 19.5 L/min (5.15 US gpm)

Pressure ... 6900 kPa (1000 psi)

Pump speed ... 1000 rpm

Engine speed ... 1000 rpm

Drive End Section (Hoist and Brake Cooling)

Test at Full Speed:

Output ... 354 L/min (93.5 US gpm)

Pressure ... 689 kPa (100 psi)

Pump speed ... 2000 rpm

Engine speed ... 2000 rpm

Output ... 352 L/min (93 US gpm)

Pressure ... 6900 kPa (1000 psi)

Pump speed ... 2000 rpm

Engine speed ... 2000 rpm

Test at Half Speed:

Output ... 177 L/min (46.7 US gpm)

Pressure ... 690 kPa (100 psi)

Pump speed ... 1000 rpm

Engine speed ... 1000 rpm

Output ... 170 L/min (45 US gpm)

Pressure ... 6900 kPa (1000 psi)

Pump speed ... 1000 rpm

Engine speed ... 1000 rpm