Graco 3A1334E important safety instructions Replace gasket

Page 24

Troubleshooting

Problem

Cause

Solution

 

 

 

 

 

Replace gasket.

 

Gasket is leaking

 

Intermittent air leakage coming from

Lower air pressure to prevent reoc-

 

 

currence.

behind the air manifold. Pump con-

 

 

 

tinues to function normally.

 

Clear obstruction.

 

 

 

Thermal relief inlet check relief pas-

 

 

sage in inlet housing is plugged

 

 

 

Replace inlet filter.

 

 

 

 

Worn or damaged piston o-ring or

Service air motor / valve

 

valve cup.

 

 

 

 

 

Continuous air exhaust

 

Replace valve gasket.

 

Damaged valve gasket

 

 

Lower air pressure to prevent reoc-

 

 

 

 

currence.

 

 

 

 

Held open or worn intake valve

Clear; service.

 

 

 

 

Held open or worn pump piston

Clear; service.

 

packings

 

 

 

 

 

 

The muffler is partially blocked

Clear muffler.

 

 

 

 

The inlet filter is partially blocked

Clear the filter.

Pump operates but output is low

 

 

Inadequate air supply pressure or

Increase air supply; clear restric-

 

 

restricted air lines

tions.

 

 

 

 

Partially closed or clogged pilot

Open valves. Clear clog as neces-

 

valves

sary.

 

 

 

 

Partially clogged fluid line, hose,

Clear clog as necessary.

 

valves, etc.

 

 

 

 

 

Oil leakage through air exhausts

Throat seal is damaged

Replace throat seal (u-cup).

 

 

 

24

3A1334E

Image 24
Contents Important Safety Instructions Related Translated ManualsManual Number Language Oil Pump Models PumpsGrease Pump Models Skin Injection Hazard Equipment Misuse Hazard Installation GroundingTypical Installation Stationary MountingsKey FIG Installation Guidelines Installing Outlet Hose FIGStationary Mounting Layout Pump MountingAir Line and Accessories Follow Plate Grease Models OnlyOperation Thermal Induced Pressure Relief Oil pumps onlyThermal Relief Theory of Operation Pressure Relief Procedure Determining Output Pressure Using the Air RegulatorStart-up Is for Oil Pumps Only Relieve pressure,Operation Repair Replacing Pilot ValvesParts Description QtyThroat and Piston Seal Replacement Kit 24H853 FIG Related Oil Pump KitsKit No Description Qty Kits 21 20Grease Pump Models 24G600 24G608 MUFFLER, 3/8Throat and Piston Seal Replacement Kit 24H854 FIG Ring and Seal Replacement Kit 24H856 FIGRelated Grease Pump Kits Kits, Oil or Grease Pump Air Valve Repair and Replacement Kits Replace Seals or Rebuild Air Valve KitsAir Valve Seal Kit 24H851 Air Valve Repair Kit 24H798Pilot Valve Replacement Kit 24H749 Troubleshooting Problem Cause SolutionOil Models Replace gasket Grease Models Relieve pressureTechnical Data 31 or 51 Oil ModelsDimensions Performance Curve Oil ModelsGrease Models Performance Curve Tested with ISO 46 Hyd OilDimensions 3A1334E Graco Standard Warranty Graco Information