6
SM-79D
PARTS LIST
3
SM-79D
OPERATION
Amount of oil used will vary with tool usage but daily filling of handle oil reservoir
should normally be adequate. Check that a fine mist of oil is always present in the air
which passes out through exhaust deflector holes. For continuous and heavy tool us-
age, it is preferable to use an automatic air line lubri-cator. For this purpose, the Wil-
son Air Filter-Lubricator Unit (Cat. #8596 for 3/8” lines) is recommended. This unit
combines an automatic lubricator with an efficient air filter.
Caution: To inhibit rust during tool storage be sure a liberal amount of oil has been
introduced into valve and air motor. Also be sure operat-ing air moisture content is
kept at a minimum. Compressor after coolers, air line traps, water separators and use
of rust-inhibiting lubricat-ing oil all help. Thoroughly clean or replace any rusted
parts found during service checks.
LUBRICATION
1. Make sure there is an adequate supply of clean air of 90 psi lubricated with light
machine oil of SAE 10 viscosity. This should be done before all long runs of
tube expanding and after every four hours of continuous use unless an air line
lubricator of ample capacity is used. SEE ’LUBRICATION’ SECTION BE-
LOW.
2. Always blow out air hose thoroughly before attaching it to throttle valve cap
which takes the 3/8” pipe coupling of 3/8” hose assembly supplied (No. 50007).
Always use a 3/8” I.D. or larger air line when maximum power is desired and be
sure that air pressure at the tool is at least 90 psi gauge.
3. Select required snap-on mandrel drive and attach it to tool spindle nose. Be sure
to align detents within it with drilled spots on spindle nose. (Instructions for re-
leasing detents are stamped on mandrel drive sleeves.)
4. Adjust Thrust Collar on expander and attach mandrel to snap-on mandrel drive
by engag-ing detent and circular groove on mandrel’s square shank.
5. Insert expander in tube as required.
6. Completely depress throttle valve trigger lever to find forward speed. When de-
sired expansion has been attained, release throttle valve lever .
7. Fully squeeze reverse valve trigger into reverse position (depressed). Depress
throttle valve trigger lever to reverse drive and back expander out of tube.
