Stanley Black & Decker SK58 user manual Troubleshooting, Problem Cause Remedy

Page 13

TROUBLESHOOTING

PROBLEM

CAUSE

REMEDY

Tool does not run.

Power unit not functioning.

Check power unit for proper flow and pressure

 

 

(7–9 gpm/26–34 lpm, 1500–2000 psi/105–140 bar.

 

Couplers or hoses blocked.

Remove restriction.

 

Pressure and return line hoses

Be sure hoses are connected to their proper ports.

 

reversed at ports.

 

 

Mechanical failure of piston or

Disassemble breaker and inspect for damaged

 

automatic valve.

parts.

Tool does not drill effectively.

Power unit not functioning.

Check power unit for proper flow and pressure

 

 

(7-9 gpm/26-34 lpm, 1500-2000 psi/105-140 bar.

 

Couplers or hoses blocked.

Remove restriction.

 

Low accumulator charge (pressure

Recharge accumulator. Replace diaphragm if

 

hose will pulse more than normal).

charge loss continues.

 

Fluid too hot (above 140.°F/60.°C).

Provide cooler to maintain proper fluid

 

 

temperature (130 °F/55 °C).

 

Insufficient air or water.

20 cfm minimum.

Tool operates slow.

Low gpm supply from power unit.

Check power unit for proper flow (7–9 gpm/26–34

 

 

lpm).

 

High back-pressure.

Check hydraulic system for excessive back-

 

 

pressure (over 250 psi/17 bar).

 

Couplers or hoses blocked.

Remove restriction.

 

Orifice plug blocked.

Remove restriction.

 

Fluid too hot (above 140 °F/60 °C)

Check power unit for proper fluid temperature.

 

or too cold (below 60 °F/16 °C).

Bypass cooler to warm the fluid or provide cooler

 

 

to maintain proper temperature.

 

Relief valve set too low.

Adjust relief valve to 2100–2250 psi/145–155 bar.

Tool gets hot.

Hot fluid going through tool.

Check power unit. Be sure flow rate is not too

 

 

high causing part of the fluid to go through the

 

 

relief valve. Provide cooler to maintain proper fluid

 

 

temperature (140 °F/60 °C max).

 

 

Check the relief valve setting.

Fluid leakage on drill steel.

Lower piston or drive hex seal

Replace seals.

 

failure.

 

Fluid leakage through charge

Upper piston seal failure or

Replace seals, recharge or replace accumulator

valve cap.

accumulator O-ring failure or

diaphragm.

 

accumulator charge loss or failure.

 

Fluid leakage around trigger.

Valve spool seal failure.

Replace seals.

Low rotation torque.

Motor not completely broken in.

Continue operation to break in motor.

 

Excessive oil temperature causes

Provide cooler to maintain oil temperature (under

 

operating pressure loss.

140 °F).

 

Damage to motor clearances.

Repair as required.

 

Insufficient air or water.

20 cfm minimum.

 

Mechanical binding during drilling.

Take care to guide drill straight.

SK58 User Manual ◄ 13

Image 13
Contents Hydraulic Sinker Drill Page Table of Contents Local Safety Regulations Safety SymbolsSafety Precautions N G E R Tool Stickers & TagsHose Types Hose Safety TagsTool to Hydraulic Circuit Hose Recommendations Hose RecommendationsHtma / Ehtma Requirements Htma / Ehtma RequirementsOperation Procedures PRE-OPERATION ProceduresOperation Cold Weather Operation Tool Protection & Care Problem Cause Remedy TroubleshootingGeneral Service Notes Accumulator Testing ProcedureCharging the Accumulator Accumulator ChargingCharging the Accumulator Accessories SpecificationsService Tools SK58 Parts Illustration Part QTY Description SK58 Parts ListUSE Part Number and Part Name When or Dering Underwater Models only Underwater Tools Depth Guideline