TM 5-3810-300-24&P-3
3.0
SHOP NOTES - TROUBLE SHOOTING -
SPECIFICATIONS - SERVICE TOOLS
SHOP NOTES
INSTALLING WATER PUMP DRIVE AND ROTOR SHAFT KIT
The current design water pump intermediate drive
1. Use a sharp screwdriver or similar tool to punch
coupling is designed to minimize wear, thereby
a hole in the center of the core plug, opposite the
increasing service life.
visible drilled hole in the rotor, and pry out plug.
To convert the former drive coupling to the current
2. Drive the groove pin down through the shaft with
coupling, a "Water Pump Drive and Rotor Shaft Kit" must
a punch until it reaches the position shown by
be used.
the dotted line.
3. Bend the groove pin with the punch until it is
NOTE: Before the kit can be installed,
almost "L" shaped as shown by the solid line.
refer to Section 3.4 and remove and
This operation is necessary because the length
disassemble the blower.
of the pin is greater than the corresponding width
of the rotor cavity.
Remove Rotor Stub Shaft
4. Drive the groove pin in until it drops into the rotor
Refer to Fig. 1 for identification and location of the parts.
cavity.
Fig. 1. Removing Rotor Stub Shaft
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