05-25-2026, 07:26 AM
In my case, my Cat-13 is much different than other engines. The hydraulic system is a carry over from pre-ZF suspensions. “I am of the mindset” that when the move away from DD60 warranted a new hydraulic system mindset.
My 38” Multi-Wing Cooling Fan set at the minimum pitch of 20° is insufficient to provide airflow for the Cat-13 engine. Why only 20° pitch?
More than 20° of pitch and the V20 pump specifications are exceeded.
As far as your rig is concerned, sounds like you might need a new hydraulic pump/lines and good advice from someone with your era Newell.
Hang in there, you’ll get it figured out with the information and guidance from the most experienced owners anywhere.
JK
My 38” Multi-Wing Cooling Fan set at the minimum pitch of 20° is insufficient to provide airflow for the Cat-13 engine. Why only 20° pitch?
More than 20° of pitch and the V20 pump specifications are exceeded.
As far as your rig is concerned, sounds like you might need a new hydraulic pump/lines and good advice from someone with your era Newell.
Hang in there, you’ll get it figured out with the information and guidance from the most experienced owners anywhere.
JK
Kristi & Jeff King
Bentonville, Arkansas
#744 2005 45’ Newell Coach
ZF Suspension/Rear Axle Steering
CAT-13 ACERT KCB Engine 525HP 1642 ftlbs Torque Cat Compound Turbocharger System Producing 49 psi
Allison HD4000MH Transmission with PTO drive for Second Hydraulic Pump.