Creative Engineering ROCK-A-FIRE EXPLOSION - Page 43

Problems and Repair
Step by Step Description Cont.
Step F. The Main Air lines:
1. If the line will not stay attached to the barb
connection, cut a small piece off the end
and try it again. If it still won't hold,
replace the barb fitting.
2. If an air line is split and leaking air,
DO NOT attempt to tape over the leak or use a
line splice; Replace the hose!
Step G. The "In Line Lubricators":
1. For external air leaks in lubricator replace
the gasket in question. (Seal Kit Part
No. 28-020-230)
2. Fill the lubricator by unscrewing the "Fill
Screw" on top of the lubricator. Do not remove
the bowl to fill it.
Step H. The Individual Valve (Refer to Drawing Page 3-015)
1. The most common problem is a sticking valve, so
check this first. If it is sticking there could
be water inside of the valve, check the Air
Dryer by-pass system. (See Drawing 3-013)
Another cause of a sticking valve, is the air
return line coming off the top of the valve
could be crimped, check for this first before
disassembling the valve. If a valve is sticking
or has blow by, it is in need of a internal
cleaning:
a. First pull the retaining ring (D) and
remove the cap (F), the cap extension (G),
the load spring (H) and the piston (I).
Remove the Solenoid assembly, then remove
the air chamber cap plate (J) .
b. Clean the valve using soapy water. Check
for nicks or foreign mater inside of the
valve. If the piston (I) is badly nicked,
replace it. Always make sure the problem is
un-repairable before replacing the part.
c. Replace any broken or bad parts and all
gaskets using the Mac Valve Repair Kit.
(Part # 28-080-910)
d. Allow the valve and parts to dry completely
before reassembly. Grease the piston (I),
all 0-Rings and gaskets, then reassemble.
3-006