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RADIATOR REPAIR
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TM-5-4210-224-14-P 250 6PM Mini-Pumper Firefighting Truck Model No.:CM-KFT-3 Manual
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RADIATOR REPAIR - continued - TM-5-4210-224-14-P0467
TM 5-4210-224-146 P
5-6. RADIATOR REPAIR. (Continued)
c. Special Preparation.
For damaged areas that are between the cooling fins, it may be necessary to remove some of the fins. Do not
remove more fins than necessary. Usually 1/4 inch beyond the leak or damage area is enough to make an
effective repair.
d. Tube Blocking
NOTE
Do not block off more than two tubes in a radiator. Blocking off more than two tubes will reduce
the cooling capability of the system.
If a tube is severely damaged, it can be blocked. The tube should be cut off 1/4 inch (6 mm) fro header and
m the
pinched shut before it is cleaned and sealed.
e. Inlet or Outlet Tank Gasket Leak Repair.
(1) Pry open the clinch tabs except those
under the inlet, outlet, and filler necks
using a screwdriver.  Lift the tabs only
enough to allow removal.
NOTE
Care  should  be  taken  not  to
overbend the tabs.  Overbending
could result in breakage.  If there
are more than 3 tabs broken on
one side of the header, or more
than 2 adjacent tabs together, the
core must be replaced.
(2) Lift the tank (1) and lide it out from under
s
the remaining clinched tab(s) (2).  You
may-have to tap the tank(s) with your
hand to dislodge the gasket (3). Lift the
remaining tab(s) with pliers.
(4) Clean the header and gasket groove of all
dirt and old rubber.
(3) Remove and discard the gaskets (3).
(5) Clean the sealing edge of the tank(s) (1).
(6) Examine the header gasket surface and
tank flange for evidence of leakage, and
clean the surface to remove dirt, burrs,
and bumps.
5-9

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