Water Pump Mechanical Seal And Bearing Replacement - Polaris 1999 Sportsman 400 Service Manual

ENGINE LOWER EN D
155
®
Water Pump Mechan ical Seal
and Bearing Replaceme nt
Do not forc e or pry the bearing out of the recept acle.
Thi s may damage the cra nkcase half.
A Polaris special too l se t (part No. 5 131135) is re-
quired to pu ll the mechanica l sea l back into the
crankcas e (Fi gu re 55).
I. Install a bearing pull er on to the bearing (Fig ure
56) and withdraw the bearing.
2. pry the o ld seal out with a Oat-b laded screw-
driver (F igure 57) or seal removal tool. If using a
screwdriver, pad the prying area under the screw-
driver with a shop clo th to avoid dam agin g the
crankcaseseal mounting bore.
3. Place a suitable size soc ket over the mec hanical
seal. Drive the mechanical seal out
of the
crankcase.
4 . Insert a scribe through the crankcase weep hole
(Figu re 58) to ensure the hole is open. Clean out if
necessary.
5. Place the new bear ing (A, Fig ure 59) over the
mount ing bore (B).
6. Place a suitable size socket over the bearing and
drive it into the crankcase until it bottoms (Fig ure 60).
7. Install the water pump
seal
as follows:
a. Turn the crankcase o ver and correc tly po si-
tio n the se al (Figure 61 ), as note d during
removal.
b. Place a socket with a 24.5
I1l1l1
outer diameter
over the seal and drive it into the crankcase
until it bottom s ( Figure 62 ).
8. Assemble the crankcase as described in this
chapter.
9. Install the mechan ical seal as follow s: