![background image](http://html1.mh-extra.com/html/mack/e-tech-sb-210-034/e-tech-sb-210-034_service-manual_3224387180.webp)
Page 164
REPAIR INSTRUCTIONS
5. Position the gear over the end of the
crankshaft (2) with the timing mark facing
outward, the chamfer (6) toward the rear of
the shaft, and the key slot aligned with key in
the shaft.
6. In one rapid motion, push the heated gear
against the flange (5). With the gear properly
positioned, immediately and carefully tap the
gear to help seat it against the flange.
155
Figure 155 — Drive Gear Installation
Crankshaft Wear Ring Installation
[212 JH]
When the service oil seal is to be replaced and
the crankshaft flange is worn, the crankshaft can
be salvaged by installing a crankshaft wear ring.
An oil seal with a larger inside diameter is used
with this wear ring.
SPECIAL TOOLS REQUIRED
r
Crankshaft Rear Seal Installer J 37716-A
r
Wear Ring Installer J 38880
r
Universal Driver Handle J 8092
REMOVAL
A limited number of crankshafts were
manufactured with a repair sleeve installed on the
flange. The repair sleeve is usually not noticeable
and is finish ground to standard flange size. If the
repair sleeve is damaged or becomes loose, the
crankshaft must be replaced.
Special care must be taken not to damage the
crankshaft flange during wear ring removal.
Refer to Figure 156.
1. The wear ring can be removed by carefully
applying heat, using a ball-peen hammer to
expand the diameter, or by using a chisel to
split the wear ring. Use extreme care not to
damage the crankshaft flange.
Place the chisel face squarely on the wear ring
and carefully strike the chisel with a hammer to
cut part-way through the ring. The wear ring will
loosen enough to be removed without cutting
completely through it. The goal is to carefully
remove the wear ring in this manner and not cut,
nick or damage the crankshaft flange.
1. Gear
2. Shaft
3. Key Slot
4. Key
5. Flange
6. Chamfer
5_106_00.bk Page 164 Friday, August 4, 2000 11:17 AM
BDC for engine manuals and specs