FMI PTW72, Manual, Page: 29 / 335

Stop Gate Arm : The arm pivots on a shaft to allow it to drop out of the way until
needed. At the pivot point there are two (2) grease fittings; one at each end of the
arm. Two (2) grease fittings should be lubricated with a good lithium base grease
approximately once every forty (40) hours of operation.
Pull Through Welder
a. Wire Drive : The Lincoln
®
brand Wire Drive Gearbox contains gears that should
be recoated with a non-fluid type lubricant (Lincoln Spec. E2322) approximately
once every two-thousand (2000) hours of operation. For access to the gears in one
chamber, remove the adapter plate and motor assembly. To lubricate the gears in
the other chamber, remove one of the pipe plugs and feed grease in contact with
the bevel gear teeth while rotating the output shaft until all teeth are lubricated.
b.
Linear Motion Bearings : Eight (8) bearings are used on the welding heads (4 per
welding head). These bearings have a grease fitting in the end that should be
greased with a (No.2) lithium type soap base grease approximately every one-
thousand (1000) hours of operation.
c.
Gear Reducer : Two (2) Winsmith
®
reducers are used on the drive roller motor.
One is located on the stationary side and one on the moveable side. Recommended
lubricants are as follows under applying working conditions:
Ambient Temp Range: 14 to 86
°
F ------ ISO Visc Grade#: 220
Ambient Temp Range: 32 to 113
°
F ---- ISO Visc Grade#: 320
Ambient Temp Range: 50 to 122
°
F ----- ISO Visc Grade#: 460
After an initial operating period of approximately 250 hours, the housing should be
drained, preferably while warm. Refill to midpoint plug level with fresh oil. Under
normal conditions, the drive should be re-lubricated at intervals of once every two-
thousand (2000) hours of operation.
d.
Roller Chain: Inspection on the drive roller chain should be made occasionally to
insure sufficient wear has not accumulated causing the chain to stretch. As the
drive chain becomes stretched, it may be adjusted by loosing the motor/reducer
mounting
bracket enough to slide the bracket back until chain is tight; then re tighten bracket
5/8-11NC hex bolts to approximately 150 ft/lbs. To reduce friction, spray chain
with light oil as needed.
e.
Moveable Arc Base : The moveable arc base contains a bronze bearing at each
corner (4 total) allowing it to slide on two (2) round tubes welded to the lift
carriage frame. The sliding base contains one grease fitting per bearing. There is
one (1) grease fitting in the pivot shaft bearing. A total of five (5) grease fittings
should be lubricated with a lithium base grease approximately once every forty
24