Repair
18
312888D
Reassembly
1.
If valving rod resilient sleeve assembly was removed
or is being replaced, use the following steps:
a.
Thread coupler onto resilient sleeve assembly
by hand as far as it will go toward sleeve. There
should be approximately 1/16 in. (1.5 mm)
clearance between coupler and valving rod.
b.
Use a 6 in. adjustable wrench and a 5/16 in. nut
driver to securely tighten coupler.
2.
Align slot on valving rod with pin in cylinder and
push valving rod assembly all the way forward then
rotate 180 degrees.
3.
Insert valving rod closure spring into cylinder and
over end of valving rod.
4.
Push valving rod retainer case over spring into cylin-
der and rotate clockwise (approximately a quarter
rotation) until retainer case snaps into position.
Coupling Block and Check
Valves
Disassembly
1.
, page 12.
2.
Use 5/16 in. nut driver to remove coupling block
mounting screw, and separate gun from coupling
block.
3.
Flush both material ports on face of coupling block
to prevent material buildup.
4.
Remove check valve gasket. Place end of coupling
block gasket removal tool into notches next to gas-
kets and pry them out.
5.
Flush open ports and check valves with gun cleaner.
6.
Remove check valves by pressing them inward and
popping them out, or by using the magnet.
There should be some resistance when pushing
valving rod assembly through throat.
Coupler
1/16 in.
Valving Rod Retainer Case
Valving Rod
Closure Spring
Valving Rod Assembly
Iso check valve is notched for identification pur-
poses.
Coupling
Block
Coupling
Block Gaskets
Check
Valves
Summary of Contents for 255828
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