TM 5-2420-230-24-1
OIL FLOW AND PRESSURE RECOMMENDATIONS
The Sheppard M-Series power steering gears are designed to operate at a maximum pressure of 2175 PSI. Each
vehicle manufacturer specifies the maximum operating pressure at which their various steering installations are
to be operated. Always refer to you Vehicle Manufacturer's specifications for the correct pump relief settings for
the vehicle you are working on.
WARNING
DO NOT INCREASE THE MAXIMUM OPERATING PRESSURE WITHOUT
CONSULTING THE VEHICLE MANUFACTURER OR SERIOUS DAMAGES
MAY OCCUR.
Oil flow and pressure for the Sheppard M-Series steering gears are outlined below by model number. Refer to the
gear identification section of this manual to determine the model of steering gear you are working on. Oil flow
requirements remain the same for all similar models and do not change from installation to installation. Follow the
Vehicle Manufacturer's recommendation.
M-SERIES STEERING GEARS
M80PI
M90PI
M100PI
M110P1+P2
RATED PRESSURE
2175 PSI
2175 PSI
2175 PSI
2175 PSI
MIN. PUMP FLOW (SINGLE)
2.1 GPM
2.5 GPM
3.0 GPM
3.5 GPM
PUMP FLOW RANGE (SINGLE)
2.1 -6.0 GPM
2.5-6.0 GPM
3.0-6.0 GPM
3.5-6.0GPM
PUMP FLOW RANGE (DUAL SYSTEM)
N/A
4.6-6.0 GPM
5.1-6.0 GPM
5.6-6.0 GPM
RATIO
16.8-1
18.9-1
18.9-1
23-1
OUTPUT SHAFT DIAMETER
1.75 IN.
2.0 IN.
2.0 IN.
2.25 IN.
Before any steering gear repairs are made complete the entire troubleshooting checklist provided in this manual.
Many times steering gears are removed or replaced needlessly. Remember, once the steering gear is removed
there is only one thing that can be determined - its weight!!!
If you have completed the troubleshooting checklist and are unsure of your diagnosis, contact your Vehicle
Manufacturer representative, or the Field Service Department of the R. H. Sheppard Co., Inc. at 717-633-4111.
K-20