Coolant Heater Installation. (Refer To Figures J-12 and J-13.) Install the engine coolant heater on
the rear of the crane's left front fender as follows:
Remove the grill from the rear cowl of the diesel engine hood in accordance with the
Technical Manual, TM-5-3810-307-24-1-1.
Mark the centers in the left front fender for the four 0.38" (3/8") diameter holes and one
1.5" diameter hole in accordance with the appropriate dimensions shown on Figure J-12.
1.50" DIA. HOLE
(4) 0.38" DIA. HOLES
FOR MOUNTING BOLTS
Use a punch to create an indent in the center for each 0.38" (3/8") diameter hole (four
places) and 1.5" diameter hole (one place).
Pre-drill 0.25" hole to be used as guide for drilling the one 1.5" diameter hole with a hole
Using a 1.5" hole saw, drill the hole for the exhaust pipe of the coolant heater.
Drill the four 0.38" (3/8") diameter holes for the mounting bolts of the coolant heater.
Clean edges of all five holes using a round file.
Remove cover (1, Figure J-13) from the coolant heater (2) by removing the two
5/16"x1/2" bolts (3) securing cover to coolant heater.
ASPHYXIATION HAZARD. Ensure that exhaust fumes cannot enter the
cab. Failure to comply with this warning could result in personal injury or
death from asphyxiation.