DETROIT DIESEL 53
Turn the puller screw clockwise and pull the sleeve off of the shaft.
Support the rotor, gear end up, on the bed of an arbor press.
Start a new sleeve straight on the shaft.
Place sleeve installer J 23679-1 on top of the sleeve
and press the sleeve on the shaft until the step in the installer contacts the shoulder on the shaft.
The step in the sleeve installer properly positions the sleeve on the shaft.
To replace the former "O" ring oil seals by the current lip type oil seals, rework the end plates by following the instructions
Refer to Fig. 7 and assemble the blower as follows:
1. Install new lip type oil seals in each end plate in current
blowers as follows:
Place the end plate on the bed of an arbor press.
Lubricate the outer diameter of the seal and, using
installer J 22576, press the seal (lip facing down)
into the counterbored hole until the shoulder on the
NOTE: A step on the seal installer will position the oil
seal below the finished face of the end plate within the
.002 " to .008 " specified.
2. Install the ring type oil seals on the rotor shafts of
former blowers as follows:
a. Install a retainer spring on each shaft of each rotor.
Then place an "0" ring retainer (dished side up) on each
b. Lubricate the "O" rings with clean engine oil, then slide
one ring on each shaft.
c. Lubricate and place a seal on each shaft. Note that the
tangs on each seal are flush with one side of the seal;
this side of the seal must face toward the rotor.
3. Place the front end plate on two wood blocks. Then
install the rotors, gear end up, on the end plate (Fig.
10). On the former blowers, be sure that the ring type
oil seals are properly positioned on the rotors.
Fig. 15- Minimum Blower Rotor Clearance
4. Install the blower housing over the rotors (Fig. 11).
NOTE: To prevent inadequate lubrication or low oil pressure, care must be exercised in the assembly of the front and
rear blower end plates to the blower housing. The rear end plate for the 3-53 blower does not have tapped holes for the
thrust washer plate bolts and no thrust washer lubricating oil holes.
5. Place the rear end plate over the rotor shafts (Fig. 12). On the former blowers, be sure that the ring type oil seals
are properly positioned on the rotors. Then secure each end plate to the 3-53 blower housing with two end plate retaining
screws and two cover