Module 2: No-Slack® rebuild
Rebuild: Assembly
Clean the fifth wheel before assembly.
Check to make sure that there are no cracks in the cross members or other components. Also check bracket pin holes to ensure they are not worn oversize (pins should fit snugly). Under no circumstances should a fifth wheel be repaired or used if any component (cross member, saddle bearing, etc.) is cracked. Clean the area that houses the jaw and wedge, check for nicks and burrs and smooth if needed. Finally lubricate this area.
1. Always assemble parts around a 2" kingpin tool. Thoroughly grease the jaw and wedge and insert as shown.
Fontaine suggests the use of a Moly based lubricant such as Mobilgrease XHP320 or equivalent when applying lubricant to the locking jaw and wedge. Also, grease all other mating surfaces prior to assembly.
