Specifications

55
Tools recommended for impeller service:
Flat head screwdriver
13mm- hex wrench
3mm hex key
4mm hex key
5mm hex key
8mm hex key
Water Pump Installation tool
MCMUTL09, 2010 and newer JR & King
MCMUTL08, 2009 and older JR models
Slide hammer with
fitting to thread into threads on end of shaft (M5x1.0)
single and double hook ends for removing plastic impeller
Dead blow hammer
COBRA IMPELLER SERVICE INSTRUCTIONS
1. Remove radiator cap and drain engine coolant as described above.
NOTE: If the impeller is damaged or broken completely back flush the coolant
system to ensure no solid pieces are in the system.
2. Remove ignition cover using a 4mm hex key (four places)
3. Stick a 3mm hex key in the water pump shaft cross hole, and remove belt
retainer screw using a 4mm hex key. (Figure 42 - item 1)
4. Remove belt retainer, water pump belt and water pump fan pulley.
5. Remove bearing retainer screw using a 3mm hex key.
6. Thread a slide hammer onto the end of the water pump shaft and remove the
assembly.
NOTE: It is quite common for the older plastic impellers to fall off the end of the
shaft during this step of the process if that is the case, then follow the steps at
the end of this section to remove the seal and impeller.
7. Clean any debris or particles from the bore and use some light emery cloth to
remove any scratches in the surface that the removal process may have
created.
8. Lubricate the bore with grease.