Jet JCT-1600 Operations & Parts Manual page 10

Troubleshooting JCT-1600 series Sand Rammers
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
Tool will not start.
Starts immediately as soon
as air is connected without
lever being pressed.
Excessive or abnormal
vibration.
Loss of power; erratic
action.
Severe air leakage.
(Note: Minimal escape of
air is often normal for air
tools.)
Excessive heat develops
in tool.
10 JCT-1600 series Sand Rammers
Possible cause
Air valve closed or obstructed.
Dirt or gum deposits on
components.
Throttle lever malfunction.
Throttle valve malfunction.
Improper lubrication.
Low air pressure.
Moisture or obstruction in air
hose.
Improper size of air transmission
lines, hoses, fittings, or
couplings.
Dirt or gum deposits on
components.
Air valve obstructed or damaged.
Housing loose or damaged.
Improper lubrication.
Worn internal parts.
Remedy
Open valve; clear any obstructions.
Flush tool with gum solvent.
If problem persists, disassemble,
clean and lubricate internal parts.
Clean throttle lever mechanism to
ensure free movement. Replace
mechanism if needed.
Inspect and repair throttle valve.
Lubricate properly according to
instructions in this manual.
Verify compressor has proper CFM
rating for tool.
Check compressor regulator
setting; set air pressure to 90 psi.
Check for loose connections at air
inlet, o-rings, etc.
Air supply must be clean and dry.
Clean out air hose(s) and remove
any kinks or bends.
Use appropriate-sized air lines/
hoses. Verify proper fittings/
couplings.
Flush tool with gum solvent.
Check and clean air filter on
compressor.
Clean external areas of tool. If
problem persists, disassemble,
clean and lubricate internal parts.
Clean or replace.
Tighten or replace as needed.
Lubricate properly according to
instructions in this manual.
Inspect and replace as needed.