1982 Ski-Doo Shop Manual, Page 119Get this manual
SECTION 02 ENGINE SUB-SECTION 06 (503 ENGINE TYPE)
CLEANING
Discard all seals, gaskets and "0" rings Clean all metal components in non-ferrous metal cleanerRemove old sealant from crankcase mating surfaces with Bombardier sealant stripper_ CAUTION: Never use sharp object to scrape away old sealant as score marks incurred are detrimental to crankcase sealing
ASSEMBLY
Prior to installation, place bearings into an oil con tainer heated to 100C (212FlThis will expand bearings and ease installation Install bearings with groove as per exploded viewBearings are pressed on crankshaft until they rest against radiusThese radius maintain the gap needed for bearings lubrication
At seal assembly, apply light coat of lithium
grease on seal lip For bearing lubrication purpose, gap of 1.0 mm (,040") must be maintained between seals and bearings When installing plain seals (seal without locating ring or without spacing legs), ensure to maintain the specified gap as illustrated