Posted 4/23/2017 05:34 (#5977633 - in reply to #5977109) Subject: RE: NH 1431 new to me!
Lincoln County. NC
Shock pro on a 1431 would be a retrofit, might be there, might not. Converted modules SHOULD have two washers above the drive hub and below the 12 point bolt head.
Jack up the bar at one of the attachment points to check slop in the bolts and spherical bearings fastening the bar to the trailframe. Replace all if there is appreciable wear. Grease the bolts regularly.