DETROIT DIESEL 53
Blower
3.4
19. Install the rear end plate cover and gasket and secure the cover and end plate to the blower with six bolts and
special washers and two reinforcement plates and tighten the bolts to 20-25 lb-ft torque.
Install Blower
Examine the inside of the blower for any foreign material. Also revolve the rotors by hand to be sure that they turn
freely. Then install the blower on the engine as follows:
3-53 ENGINE BLOWER
1. Affix a new blower-to-block gasket on the side of the cylinder block. Use Scotch Grip Rubber Adhesive No. 4300, or
equivalent, only on the block side of the gasket.
2. Position the blower front end plate and gasket on the end of the blower and install six bolts with two special washers
on the center bolts and the reinforcement plates on the two top and two bottom bolts. Install a new engine end plate to
blower gasket over the threaded ends of the bolts. Apply Scotch Grip Rubber Adhesive No. 4300, or equivalent, to the
engine end plate side of the gasket.
NOTE: The current front and rear end plate gaskets are identical and may be used in either position. Formerly
these gaskets were not interchangeable due to a difference in thickness.
3. Place the blower on the cylinder block locating flanges and, while holding the blower in place, thread the six bolts
finger tight in the rear engine end plate and flywheel housing. Then install the blower-to-block mounting bolts and
washers and tighten them to 10-15 lb-ft torque.
4. Tighten the center blower-to-end plate bolts first and then the top and bottom bolts to 20-25 Ib-ft torque. Then
tighten the blower-to-block bolts to 55-60 Ib-ft torque.
5. Check the backlash between the upper rotor gear and the camshaft or balance shaft gear. The backlash should be
.003 " to .007 ".
6. Install the air shut-down housing (Section 3.3).
July, 1972 SEC. 3.4 Page 11
