Onan HGJAB Service Manual

6-3
Rotor Removal
1. Remove the rotor drive pulley. See Sec-
tion 7. Drive Belt System.
2. Remove the generator end bell.
3. Pull the rotor assembly straight up, taking care
not to damage rotor or stator windings.
Rotor Reassembly
Reassembly is the reverse of removal. Relubricate
the bearing bores in the end bell and base with mo-
lybdenum disulfide paste or equivalent. Make sure
the wave washer is in place in the end bell and that
the O–rings are in place in top and bottom bearing
bore groves.
For Spec A through C original rotors only, use an
adhesive when installing new bearings on the rotor
shaft. Apply the adhesive to the shaft (Locktite 680
or equivalent) and primer (activator) to the bearing
(Locktite 747 or equivalent).
After applying adhesive, if necessary, press each
bearing on up to its shaft shoulder using a bench
press.
CAUTION
Apply force only to the bearing in-
ner race to avoid damage to the bearing.
BRUSHES AND SLIP RINGS
Brush Block
Disconnect the field leads from the brush block (Fig-
ure 6-2), remove the mounting screw and withdraw
the brush block from the generator end bell. Re-
place the brush block assembly if either brush is
shorter than 7/16 inch (11 mm), binds in the brush
block or is damaged in any way.
Reconnect the field leads, F– to the top terminal,
and F+ to the bottom terminal when reassembling.
Make sure the leads pass through the lead clip (Fig-
ure 6-1) to prevent strain on the terminals.
Slip Rings
Remove the brush block and inspect the slip rings
for grooves, pits, or other damage. Use a Scotch
Brite pad or commutator stone to remove light wear
or corrosion.
F–
F+
FIGURE 6-2. BRUSH BLOCK

Onan HGJAB Specifications

General

Brand	Onan
Model	HGJAB
Category	Portable Generator
Language	English