Sheppard® Service Bulletins and Manuals

Service Manual (PDF Links)

M Series Manual

D Series Manual

92 Series Service Manual

Service Bulletin (PDF LINKS)

Troubleshooting Checklist

Approved Fluid List

Seal Kit List (July 2020)

Parts Order Form

Preventative Maintenance Instructions

Seal Kit Installation Instructions

Power Steering Internal Leakage Test Procedure

Instructions for Installing Steering Gears

Kenworth Medium Duty Bleeding Procedure

Troubleshooting Checklist

Chock the vehicle before beginning any work. Adhere to all safety guidelines outlined in the steering gear service manuals or from your vehicle manufacturer. Before proceeding with the following tests, check all mechanical and external conditions before hydraulic testing. Do not remove the steering gear or pump until hydraulic tests are completed and an authorized number has been received from Sheppard.
Sheppard Returned Goods Authorization Number
Date
Date Format: MM slash DD slash YYYY
Dealer Name & Location
Dealer Contact Name
Contact Phone Number
Servicing Tech Name
Email Address
Description of Steering Complaint
Vehicle Model
Mileage
VIN
Engine Model
Vehicle Application
Steering Gear Model
Serial No.
Slave Gear Model (if equipped)
Serial No.
Pump Manufacturer
Pump Part #
Front Axle Weight Rating
Front Axle Manufacturer
HYDRAULIC TESTS:

Refer to RH Sheppard service information available on line and in the Sheppard® steering gear Service Manuals. Do not remove the steering gear! Install a pressure and flow tester in the pressure line from the pump to the gear as outlined in the Diagnosis and Troubleshooting Section. Record the following information:
Engine Idle RPM
Engine Max RPM
Oil Temperature
Degrees F (Tests should be run at about 180F)
System Backpressure @ Idle
PSI
Backpressure @ Max RPM
PSI
Maximum System Pressure (Pump Relief Setting) at idle
PSI
at Max RPM
PSI
Flow @ Idle with Backpressure Only
GPM
Flow @ Max RPM Backpressure Only
GPM
Flow @ Idle With 1500 PSI Load Applied
GPM
Flow @ Max RPM With 1500 PSI Load Applied
GPM
Does Steering Gear Stay in Pressure when the Steering Wheel is released?
- YES
- NO
Static Steer Turning Pressure RIGHT Turn
PSI
LEFT Turn
PSI
Relief Plunger Trip Pressure RIGHT Turn
PSI
Pressure Drops Down to
PSI
Relief Plunger Trip Pressure LEFT Turn
PSI
Pressure Drops Down to
PSI
Steering Gear Internal Leakage RIGHT Turn
PSI
GPM
Steering Gear Internal Leakage LEFT Turn
PSI
GPM
Static Steer Turning Input Effort RIGHT Turn
In. Lbs
LEFT Turn
In. Lbs

Sheppard® Service Bulletins and Manuals

Troubleshooting Checklist

HYDRAULIC TESTS: