DeVillbiss Air Power Company SP-100-F Troubleshooting Guide download pdf (Page 19)

6. Reinstallthecheckvalve.DONOTOVER-

TIGHTEN.

SERVICINGINTAKEANDEXHAUSTVALVES

Theintakeandexhaustvalvesaswellasthevalve

platesandcylinderheadwill,overaperiodoftime

accumulateresidue of carbon-like materialon their

surfaces. The material will decrease the efficiency

of the compressor.These componentsshouldbe

inspected,whenever a problemis suspected,and

cleaned or replacedwith new parts.Use the follow-

ing procedureto inspectthe parts.

1.

2.

During service or repair activities

always disconnect the spark plug wire

before attempting repair maintenance

on compressor outfit. Make sure the

pressure is released from the air tank.

Disconnect the sparkplugwire and drain

all air pressure fromthe air tank.

Service two stage compressor valves

as follows:

a. Remove the screws securingthe

intercoolerto the cylinder head and

removethe intercooler.

b. Disconnect the outletlinefrom the

aftercooler.

c. Remove the screws securingthe

aftercooler to the cylinder head and

remove the aftercooler.

d. Removethe hardware securingthe

cylinderhead and remove the

cylinderhead and valve plate.

Many solvents are highly flammable

and a health hazard if inhaled. Always

observe the solvent manufacturers

safety instructions and warning.

e.

Clean carbon deposits in head cavitiesand

valves plates with lacquer thinner or

other suitablesolvent.

f. Remove the intakeand exhaust valve

assemblies fromthe valve plate. Clean and

inspect the valves, and valve retainers.

Replace any defective componentsas

necessary.

g. Reassemble the intake and exhaust

valves.

NOTE

Do not use gasket cement on any

gasket surface as this may clog the

compressor valve cavities and flow

areas.

h. Reinstallthe valve plate,Use a new

valve plategasket.

Install the cylinder head. Use a new

head gasket. Snug the mountingscrews

tight then torque to 35 foot-pounds

usinga cdss crosspattern when torquing.

j. Installa new after cooler gasket. Secure

the aftercoolerwiththe mountingscrews

removed.

k. Connectthe outlet line to the aftercooler.

I. Installnew intercoolergasketsand

securethe intercoolerwith the mounting

screwsremoved.

4. Connect the sparkplug wire.

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