Tweco PWH-M 2A - Manual (Page 25)

Service 4-4 Manual 0-2005
Machine Mounted Torch
1) Unscrew the nut holding the positioning tube
to the torch assembly. Slide the positioning tube
back away from the torch.
2) Unscrew the sleeve adaptor from the torch. Slide
up the leads until the torch fittings are acces-
sible.
3) Disconnect the four hoses from the torch.
4) Remove the nut, sleeve adaptor and position-
ing tube from the old leads and install on the
new leads at the torch end in the same order as
they were on the old leads.
5) Connect the new leads to the torch making sure
the color-coded leads mate with the color-coded
torch fittings. Do not overtighten.
6) Screw the sleeve adaptor back onto the torch.
7) Slide the positioning tube over the sleeve adap-
tor and secure with the nut.
4.3 TORCH LEADS REPAIR
WARNING
Power to the system must be turned off.
If repair is needed to the console end of the leads, then
disconnect at the console. To repair the leads at the torch
end, disconnect as in the preceding steps according to
the type of torch being used, then proceed as follows:
Positive and Negative Leads (Torch End)
1) To replace the fittings at the torch end, cut the
hose (only) just behind the ferrule. Grip the fit-
ting and slide the hose back 4 to 6 inches. Clamp
the wire lead at the end of the hose to prevent
the hose from sliding back down over the fit-
ting. Cut the old fitting off where the wire lead
goes in.
2) Slide the new ferrule onto the wire lead.
3) Insert the wire lead into the small end of the
new fitting up to but not beyond the stop.
4) Crimp the wire lead into place with a 16-14
AWG crimping tool. It is important to crimp the
whole length of the solid diameter from the slot
to the end.
5) Use the same crimping tool to crimp the wire
stop in the slot out of the way. This is necessary
to insure proper coolant flow.
6) Remove the clamp from the wire lead and push
the hose over the glands onto the fitting.
7) Slide the ferrule onto the hose and fitting until
it rests over the glands. Crimp using a 5/16 di-
ameter crimping die, Scovill No. 46 or equiva-
lent.
Positive and Negative Leads (Console End)
1) To replace the fittings on the console end, cut
the hose (only) just behind the ferrule. Grip the
fitting and slide the hose back 4 to 6 inches.
Clamp the wire lead at the end of the hose to
prevent the hose from sliding back down over
the fitting. Cut the old fitting off where the wire
lead goes in.
2) Slide the new ferrule onto the wire lead and then
the nut (in the right direction).
3) Insert the wire lead into the small end of the
new fitting up to but not beyond the stop.
4) Crimp the wire lead into place with a 16-14
AWG crimping tool. It is important to crimp
the whole length of the solid diameter from the
slot to the end.
5) Use the same crimping tool to crimp the wire
stop in the slot out of the way. This is necessary
to insure proper coolant flow.
6) Slide the nut onto the fitting.
7) Remove the clamp from the wire lead and push
the hose over the glands, onto the fitting.
8) Slide the ferrule onto the hose and fitting until
it rests over the glands. Crimp using a 7/16 di-
ameter crimping die, Scovill No. 46 or equiva-
lent.