Jet 505921, Operations & Parts Manual

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10 JAT-920 Pneumatic Riveter
Troubleshooting JAT-920 Pneumatic Riveter
Any disassembly of the tool should be done by qualified service personnel. For problems not addressed
below, contact JET technical service at 800-274-6846.
Problem Possible cause Remedy
Riveting force insufficient. Air valve obstructed. Clear any obstructions.
Low air pressure. Verify compressor has proper CFM
rating for tool.
Check compressor regulator
setting; set air pressure to 90 psi.
Check for loose connections.
Dirt or gum deposits on
components. Flush tool with gum solvent.
If problem persists, disassemble,
clean and lubricate internal parts.
Internal components are worn. Replace worn components.
Trigger or trigger lever is
malfunctioning. Inspect and repair trigger and/or
trigger lever.
Riveter stops operating. No air pressure. Check air compressor and hoses.
Make sure compressor is set at
90psi, and air lines are not twisted.
Trigger or trigger lever is
malfunctioning. Inspect and repair trigger and/or
trigger lever.
Insufficient pulling action. Air valve obstructed. Clear any obstructions.
Low air pressure. Verify compressor has proper CFM
rating for tool.
Check compressor regulator
setting; set air pressure to 90 psi.
Check for loose connections.
Dirt or gum deposits on
components. Flush tool with gum solvent.
If problem persists, disassemble,
clean and lubricate internal parts.
Jaws slipping. Obstruction in jaw area. Clean jaw parts.
Worn jaws or jaw spring. Replace parts as needed.
Loose jaw case. Tighten.
Short stroke. Incorrect size rivet. Use proper rivet for hole.
Insufficient lubrication. Lubricate according to instructions.
Jaws will not open. Dirty jaws or loose nosepiece. Clean or tighten as needed.
Slow piston return. Obstruction in cylinder. Disassemble and clean cylinder.
Fires immediately as soon
as air is connected. Trigger or trigger lever is
malfunctioning. Inspect and repair trigger and/or
trigger lever.
Severe air leakage.
(Note: Minimal escape of
air is often normal for air
tools.) Air valve obstructed or damaged. Clean or replace.
O-rings damaged. Replace 0-rings
Housing loose or damaged. Tighten or replace as needed.