3.94
9850064 R03 - 2021 650 / 850 Matryx Trail Performance / Crossover Snowmobile Service Manual
© Copyright Polaris Inc.
WATER PUMP INSTALLATION
The seals on the impeller side of the water pump may be
serviced with the engine in the chassis. Remove the
engine before servicing the complete water pump
assembly.
1. Carefully install the water pump drive shaft assembly
q
into the water pump bore.
NOTICE
The water pump drive shaft bearings
w
are part of the
shaft assembly. If the bearing need to be replaced, the
water pump drive shaft must be replaced as an
assembly.
2. Install the snap ring
e
.
IMPORTANT
Use care during installation to prevent damaging the
water pump bore.
3. Once the water pump drive shaft assembly and snap
ring have been installed, the crankshaft and
crankcase can be re-installed. See Crankshaft
Installation and Crankcase Assembly.
NOTICE
Ensure the water pump cross-shaft turns and indexes
with the crankshaft during assembly.
4. Install the seal
r
.
NOTICE
It is recommended to use a 22 mm socket to drive oil
seal into bore until it rests against the snap ring. Install
with spring toward intake side of engine.
IMPORTANT
Do not press on ID of seal face, only press on OD.
5. Install the mechanical seal
t
using seal installation
tool.
Seal Installation Tool:
PN 2872389
NOTICE
Apply water to cross-shaft prior to seal assembly at seal
/ shaft interface.
ENGINE / COOLING / EXHAUST
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