20
PI-190
June 2019
Section 7: Troubleshooting
7.0 4” J-FORCE GEN II TROUBLESHOOTING
Problem
Possible Cause
Remedy
Will not spin
Nozzles worn, plugged,
or wrong size
Replace nozzles
O-ring / backup ring
failure
Replace o-rings /
backup rings
Galling between mandrel
and flange bushing
Replace damaged com-
ponents (rebuild kit)
Debris
Clean*
Spins slowly
Incorrect nozzle size or
worn nozzles
Replace nozzles
Debris
Clean*
Low pressure
Nozzles worn, plugged,
or wrong size
Replace nozzles
O-ring / backup ring
failure
Replace o-rings /
backup rings
Connections not tight,
leak
Find and repair leak
Low Pull
Nozzles worn, plugged,
or wrong size
Replace Nozzles
Type M Adapter
stuck in hose end
--
See Section 5.3
* To clean the J-Force follow 6.1 DISASSEMBLY FOR MAINTENANCE.
If the mandrel and bushing surfaces are free from high spots and major
scratches during inspection and cleaning, and the problem is not resolved,
the parts must be replaced. Reassemble according to 6.2 ASSEMBLY.