3.42
ENGINE
9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
Crankcase Bearing Inspection
1.
Remove the seal from the PTO side crankcase.
2.
Inspect the crankshaft main bearings, balancer shaft
bearings, and pump shaft bearing.
NOTE: Due to extremely close tolerances and
minimal wear, the bearings must be inspected
visually, and by feel. Look for signs of discoloration,
scoring or galling. Turn the inner race of each
bearing. The bearings should turn smoothly and
quietly. The outer race of each bearing should fit
tightly in the crankcase. The inner race should be
firm with minimal side to side movement and no
detectable up and down movement.
3.
Support the crankcase and drive or press the main
bearings out of each crankcase.
4.
To remove balancer shaft bearings and pump shaft
bearing use a blind hole bearing puller.
NOTE: Bearings are stressed during the removal
process and should not be re-used!
Oil Seal / Mechanical Seal Removal
(Engine Disassembled)
NOTE: The water pump mechanical seal can be
removed without removing the engine. Refer to
Water Pump Mechanical Seal Installation.
Replace the pump shaft seal and water pump mechanical
seal whenever the crankcase is disassembled.
1.
Remove the pump shaft bearing from the Magneto
(right hand) side crankcase.
2.
Pry out the oil seal, noting the direction of installation
with the spring side facing IN (toward inside of case).
3.
Drive the water pump mechanical seal out of the
crankcase from inside to outside. Note: The new
mechanical seal must be installed after the
crankcases are assembled, using a special tool. See
Mechanical Seal Installation.
Crankcase Inspection
1.
Remove all traces of gasket sealer from the
crankcase mating surfaces. Inspect the surfaces
closely for nicks, burrs or damage.
2.
Check the oil pump and oil passage mating surfaces
to be sure they are clean and not damaged.
Содержание 2012 Sportsman Forest 500 International
Страница 1: ...1 GENERAL 2 MAINTENANCE 3 ENGINE 4 FUEL SYSTEMS 5 BODY SUSPENSION...
Страница 2: ...6 CLUTCH 7 FINAL DRIVE 8 TRANSMISSION 9 BRAKES 10 ELECTRICAL...
Страница 3: ...NOTES...
Страница 115: ...NOTES ENGINE 3 60...
Страница 116: ...FUEL SYSTEM 4 1 CHAPTER 4 FUEL SYSTEM 4 CARBURETION SYSTEM 4 3 ELECTRONIC FUEL INJECTION SYSTEM EFI 4 25...
Страница 117: ...4 2 FUEL SYSTEM...
Страница 139: ...NOTES CARBURATION AND FUEL SYSTEM 4 24...
Страница 185: ...NOTES 500 EFI FUEL SYSTEM 4 70...
Страница 212: ...NOTES...
Страница 258: ...NOTES CLUTCHING 6 46...
Страница 330: ...NOTES TRANSMISSION 8 24...
Страница 392: ...10 28 ELECTRICAL 9923412 2012 Sportsman 400 500 and EFI Tractor Service Manual Copyright 2011 Polaris Sales Inc...
Страница 424: ...NOTES ELECTRICAL 10 60...
Страница 425: ...Located By Battery...
Страница 426: ......
Страница 427: ...Located By Transmission Breakout Resistor Module...
Страница 428: ......
Страница 429: ...Located By Battery...
Страница 430: ......
Страница 431: ...Located By Transmission Breakout Resistor Module...
Страница 432: ......