Water Pump Mechanical Seal Removal (Engine Installed) - Polaris A12MH46AX Service Manual

Water Pump Mechanical Seal Removal
(Engine Installed)
Water Pump Mechanical Seal Puller:
(PN 2872105)
Replacement T-Handle:
(PN 2872106)
This tool allows a technician to replace the mechanical
water pump seal on EH50PL engines without removing
the engine and splitting the cases.
CAUTION
Improper or careless use of this tool or procedure
can result in a bent water pump shaft. Pump
shaft replacement requires engine removal and
crankcase separation. Use caution while
performing this procedure. Make sure that the
puller is parallel to the shaft at all times.
Do not place side loads on the water pump shaft
or strike the puller or shaft in any way.
1. After the coolant has been drained, remove the water
pump cover, impeller and the sealing washer.
Sealing Washer
(Copper or Aluminium)
Coolant Drain
Bolt
2. Slide the main puller body over the outer portion of the
mechanical seal as shown below and turn T-Handle
clockwise until it contacts water pump shaft. Continue
rotating until outer portion of mechanical seal is
separated from the metal seal body.
T-Handle
Sealing Washer
Oil
Seal
Impeller
Mechanical Seal
Main Puller Body
9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
3. Insert the puller legs between the water pump drive
shaft and the remaining portion of the mechanical
seal. Attach the puller legs to the main puller body.
4. Ensure that the split between the puller legs is fully
supported by the main body of the tool.
5. Tighten the hex socket screws on the puller legs
sufficiently so the lip of the puller legs will grasp the
mechanical seal.
Hex Socket Screws
Puller Legs
6. Turn the puller T-Handle clockwise until it contacts the
water pump shaft.
remaining portion of mechanical seal has been
removed from the cases. Pump shaft oil seal can also
be replaced at this time if necessary.
ENGINE
Main puller
body
o
Position the split 90
to opening on main
puller body
Lip must grasp inside
of mechanical seal
Continue rotating until the
3.47
3