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9. Using the lift handles and the required three people, tilt and hold the heat
exchanger close to the rear door opening and align the hole in the bottom of
the heat exchanger with the hinge pin on the bottom hinge bracket. You might
have to move the heat exchanger around until the pin slides into the hole in
the bottom of the heat exchanger.
Note: There are two holes on the bottom hinge side of the heat exchanger.
Make sure that the hinge pin goes into the hole that is closest to the
outside of the heat exchanger.
Screws
Figure 59. Installing the heat exchanger door
10. While two people hold the heat exchanger steady, have a third person climb
the platform ladder, rotate the top hinge bracket, and position the top hinge
bracket pin in the hole on the top of the heat exchanger.
11. Align the two open holes in the top of the rack with the threaded holes in the
top hinge bracket and square up the heat exchanger with the rack.
12. Secure the top hinge bracket to the rack with two screws. Do not fully tighten
the screws.
13. Open and close the door one or two times to be sure that it aligns correctly,
adjusting the bracket as needed. Then, tighten all three screws.
Top hinge
bracket
Bottom hinge
pin
Chapter 5. Maintaining the heat exchanger
73
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