9727 datasheet(16/26 Pages) 3M

16 / 26 page

Repair Procedures

First follow “Handle Disassembly Instructions,”

Procedure A on page 13. Then remove the two large

Phillips head screws to the rear of the wire terminals on

the right hand side of the handle. This allows the

regulator assembly to swing free, connected only by

the hose going from the brass rear of the regulator to

the loading chamber assembly, and then main hose

assembly. Remove the main hose by unscrewing the

elbow fitting from the regulator. Use a 5/16’’ wrench

to remove the loading chamber hose from the regulator.

Reassemble with a new regulator using reverse

procedure. Be sure hose fittings are quite snug. Check

for air leaks by activating the regulator. Once this is

done, reassemble the handle and heat shield.

B. Regulator Kit

Caution

Disconnect air and electrical power and make sure

applicator is at room temperature before servicing

3M™ Scotch-Weld™ Hot Melt Applicator PG II LT.

Failure to disconnect air and electrical power before

servicing may cause electrical shock or damage to the

applicator.

Caution

Contact with molten adhesive or hot applicator tip or

metal components may cause burns. Wear heat-

resistant gloves and safety glasses when operating or

repairing the 3M Scotch-Weld Hot Melt Applicator

PG II LT.

C. Valve Kit

3M Scotch-Weld Hot Melt Applicator PG II LT

must be warm prior to repairing nozzle valve.

Nozzle valve assembly consists of the nozzle tip and

the nozzle valve. Remove the old valve assembly using

a 5/8’’ open-end wrench. Replace with new assembly.

Gently snug up the valve assembly. With a 1/2’’

wrench, also snug up the new tip.

D. Hose Kit

Follow “Handle Disassembly Instructions,” Procedure

A on page 13. Remove the main hose by unscrewing

the elbow fitting from the air regulator. Cut the cable

ties holding the power cord and hose assembly

together. Remove the hose and reconnect the new hose

using reverse procedure. Add new cable ties to the hose

and power cord.

Caution

Disconnect air and electrical power and make sure

applicator is at room temperature before servicing 3M

Scotch-Weld Hot Melt Applicator PG II LT. Failure to

disconnect air and electrical power before servicing

may cause electrical shock or damage to the

applicator.

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