DETROIT DIESEL 53
Clean and dry all of the parts throughly.
The finished inside face of each end plate must he
smooth and flat. Slight scoring may be cleaned up with
a fine grit emery cloth. If the surface is badly scored.
replace the end plate.
inspect the surfaces of the rotors and the blower
housing. Remove burrs or scratches with an oil stone
Examine the rotor shaft. gear or drive coupling for
burred or worn serrations.
Inspect the blower gears for excessive wear or damage
Check the bearing and oil seal contact surfaces of the
rotor shafts and end plates for scoring. wear or nicks.
If an oil seal sleeve is used on the rotor Shaft. it can he
replaced as follows:
a. Place sleeve remover J 23679-2 over the rotor
shaft and behind the oil seal sleeve.
Fig. 12 - lnstalling Rear End Plate
b. Back out the center screw of one gear puller
J 21672-7 and attach the pulier to the sleeve
remover with three 1/4"-20 x 3" bolts and flat
Fig. 14 - Measuring Rotor Lobe to Housing
Fig: 13 - Installing Blower Rotor Gears
SEC. 3.4 Page 7