Onan J Series User Manual

AIR DUCT
FIGURE 10. OPTIONAL AIR SHUTTER
The shutter opening temperature isn’t adjustable. The
power element plunger must contact the shutter roll
pin at room temperature. To adjust, loosen the power
element mounting screws and slide the assembly
until it touches the roll pin with the shutter closed
(Figure
11).
VERNATHERM BRACKET
ADJUSTING AND MOUNTING
SCREWS IN SLOTTED HOLES.
-
ADJUST THE VERNATHERM
POWER ELEMENT TO REST
ON THE ROLL PIN WITH
SHUTTER CLOSED AT AMBIENT
TEMPERATURE
REPAIR
If the shutter won’t open, check the powerelement for
defects or binding of the plunger. Check the shutter
for binding against the housing.
To test the power element, remove it from the
assembly and apply heat. When the element reaches
about 120°F, the plunger should start to move out.
Total movement should be at least 13/64-inch.
If the shutter won’t close, check for a weak return
spring, binding
in the nylon bearings, or dirt in the
power element plunger. If the nylon bearings are
worn or cause binding, replace them. Remove the
shutters and pull out the actuating arm (stub) shafts.
Push out the old bearings and push in new bearings
from the inside
of the shutter housing. The larger
bearing surface acts as a spacer bushing and must be
on the inside of the housing.
TTERS
LOWER SHUTTER
ACTUATING ROD
ADJUST THE VERNATHERM
POWER ELEMENT TO REST
ON THE ROLL PIN WITH
SHUTTER CLOSED AT
AMBIENT TEMPERATURE
VERNATHERM BRACKET
ADJUSTING AND MOUNTING
SCREWS IN SLOTTED HOLES
FIGURE 11. AIR SHUTTER ADJUSTMENTS
17
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Onan J Series Specifications

General

Brand	Onan
Model	J Series
Category	Engine
Language	English