Assembly Procedure Illustration - Hobart Jet-Ex 5D Operation And Maintenance Manual

OM-2094 / Operation and Maintenance Manual
Jet-Ex 5D / Series 500285/ Generator Set
(12) Refer to Figure 2. Insert and hold a short iron bar through the flywheel housing against the fan
blades of the fan and coupling assembly to block the armature against clockwise rotation. Do
this carefully to avoid damaging the fan blades.
(13) Tighten the 3/8-16 X 3/4 screws alternately and evenly as follows:
a. Set a torque wrench to 30 foot-pounds (41 N-m) and tighten all three 3/8-16 screws to that
value. As illustrated in Figure 2, insert and hold a short iron bar through the fan housing
against the fan blades of the fan and coupling assembly to block the coupling against
clockwise rotation. Do this carefully to avoid damaging the fan blades. Note that as these
screws are tightened, the armature will be pulled back into the bearing hub.
b. Repeat step (a) above until 3/8-16 screws can no longer be tightened.
(14) Make certain that the armature is pulled slightly into the bearing hub (so that it does not interfere
with the bearing cap).
(15) Using a 3/16-inch Allen wrench, tighten the set screw in the bushing to apply pressure on the
key.
(16) Re-install the bearing cap that was removed in step (8).
(17) Re-install the generator housing cover and the flywheel housing cover.
(18) Re-install the fuel tank and canopy components.
Chapter 3-1
Page 6

Assembly Procedure Illustration

Figure 4
November 1, 2000
Revised 03/01