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58
NOTE:
Inspect the old coolant for evidence of oil, combustion byproducts (black
‘oil slick’ stuff) or other things that may indicate a problem.
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.