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SPT-7 Six - Pak Light Commercial Trainer
Part Two: Maintenance
In this paragraph, we will discuss the inspection of the cables, pulleys and their associated components. If there ex-
ists the potential for injury to occur on a machine, it will most likely lie in the cable system. It is important to inspect
the cables frequently and let it be known to all users that it is their responsibility to report any worn-out cable to pre-
vent a sudden failure that can result in an injury. Cables are moving parts, meaning cable-wear will occur regardless
of the type or size used. In the advent of the 3/16” mill-spec cable this wear takes longer to become apparent and
this is why frequent inspections are so important.
1. Check the cable termination at the weight stack. To perform any cable tension adjustment, loosen the hex
jam nut and thread the hex tap bolt in or out to give cable the proper tension. Re-tightened the hex jam
nut when adjustment is complete and make sure the hex tap bolt is threaded 1/2” into the socket of the
selector bar top plate.
2. Check the cable as it terminates at the cam. Check the end fi tting for any signs of fraying in this area.
Inspect the bolt and nut and/or screw holding the fi tting and be sure that it is tight.
3. Check the cables as it passes over all pulley wheels. Visually inspect the cables and pulleys. A cable that
is wearing will exhibit a ballooned surface that passes over the pulley. This is and early warning sign to
replace the cable.
Part Three: Lubrication
Bearing and linear bearings systems have advanced over the years but they must be maintained on a regular basis
if you expect them to last and perform effi ciently. TuffStuff uses only the highest quality bearings and linear motion
components that are virtually trouble-free but requires the regular preventive maintenance to insure long-lasting
performance.
1. Bronze and nylon bushings, we recommend on a monthly basis to spray a tefl on-base lubricant (silicone-
free) directly onto the shaft as it passes through these bushings. Spray a small amount onto the shaft and
rotate it through its complete movement and wipe off any excess.
2. Weight stack guide rods and bushings, again use tefl on spray lubricant and this time spray onto a rag and
wipe the guide rods down with this rag on a weekly basis. Do not use WD-40 or other lubricants as they
attract dirt and will crate a mess between the weight plates and bushings.
3. Sealed bearings pivot points, as the name implies are protected from the outside environment and require
no lubrication. During the machine wipe down, wipe the external bearing surfaces with the damp rag and
dried to prevent the build up of dust and sweat.
4. Linear bearing systems are precision, high load components that require regular maintenance. Dirt and
corrosion are the major culprits in linear bearing failure. The hardened shafts must be wiped down weekly
and lubricated with a light layer of tefl on grease. We recommend a tefl on-base (silicone-free) gel/grease
for this purpose. Lack of care and maintenance will result in corrosion of the linear shaft causing the bear-
ings to clogged and jammed
.
If you religiously perform the maintenance procedures, you will increase the life of the machine and ultimately lower
your maintenance costs with fewer replaced components and downtime.
Any doubts, equipment with mechanical problems should be placed “Out-of-Service” until all problems are corrected.
If replacement parts are required or maintenance questions, please contact TuffStuff Service Department:
Phone: 909-629-1600 Fax: 909-629-4967 e-mail: [email protected]
