RADIATOR CORE - Continued
(3) Lift core onto reservoir and ensure holes line up. Push four capscrews through holes to ensure alinement.
(4) Lift side member into place and aline with reservoir. Install capscrews and nuts handtight
(5) Lift second side member into place and install its capscrews and nuts handtight.
(6) Install second gasket on top of core and aline second reservoir to gasket and core.
(7) Install all capscrews and nuts handtight. Ensure the strengthening ribs are installed on the core side of the
(8) Tighten capscrews in sequenced steps around each flange until the gasket thickness reduces from its
original 0.090 in. (2.29 mm) to 0.060 in. (1.52 mm). This is equivalent to 1/2 turn of capscrew from
(9) Pressure test the radiator as detailed in REPAIR following.
(1) Determine location of leak either by inspection or by pressurizing the radiator with air and submersing radiator
(2) A leak in either the bottom or upper reservoirs can be repaired by welding (see TM 9-237).
(3) A leak in the core can be repaired either by plugging a tube or by replacing the core. For core replacement,
see REMOVAL and INSTALLATION preceding.
(4) A leak on either core to reservoir flange requires the gasket to be replaced. See REMOVAL
and INSTALLATION preceding.
(5) To plug a tube, refer to instructions following.
(6) If the tube is on the outside of the radiator, the tube should be cut out of the radiator, ensuring there is a 1 in.
(2.5 cm) stub left. Each stub should be crimped over and hard soldered (see TM 9-237).
(7) If an outside tube is leaking within 1 in. (2.5 cm) of the reservoir, or an inner tube is leaking, that tube should
be plugged with suitable pieces of copper hard soldered to each end of the tube. To do this the radiator
reservoirs must first be removed. Refer to REMOVAL following.
(8) When the tube is repaired, the radiator must be tested as in step 1 preceding.,
2-151 (2-152 Blank)