TM 5-2420-230-24-1
Symptom
Possible cause
Remedy
Worn universal joint
Check and replace as
Steering input not smooth
required
Lack of lubrication
Lubricate per vehicle
manufacturer's
recommendations
Universal joints not phased
Re-phase columns*
properly
Low oil flow
Idle speed too slow
Drive belts slipping
Supply pump not to
specifications
Pump cavitating
Correct pump supply
Overheating
Correct cause of overheating
NOTE: Universal Joints
Universal joints are designed to operate best when the angle between the drive and driven
shaft is a maximum of 20 to 25 degrees. Angles greater than this may upset steering
performance.
IMPORTANT:
Actuating shaft thread wear generally comes from improper lubrication or excessive man-
ual steering. Manual steering results from low pump pressure or flow or an overloaded
front axle.
*To check phasing of the universal joints in the steering column, use an inch-pound graduated dial type torque
wrench. With a socket on the steering wheel retaining nut, read the difference in the torque while steering from
lock-to-lock. Variation of more than 15 in.-lb. means improper phasing. Take the reading with the vehicle sta-
tionary and the engine running at idle.
Phasing can usually be corrected by rotating the two-piece intermediate shaft one spline at a time until the
torque reading remains the same throughout the 360 degree rotation of the steering wheel.
K-25