2003 Bombardier Outlander 400 Factory Service Manual, Page 113Get this manual
Section 03 ENGINE Subsection 08 (LUBRICATION SYSTEM)
WARNING
Oil pressure regulator plug on oil pump housing is spring loaded
CAUTION: Never use the retaining ring second timeAlways replace by new oneNOTE: Drive gear is snapped on needle pinThis needle pin passes through the balancing shaft needle pin no12 pin no15 intermediate gear no16
R400motr117A
1Valve piston 2Compression spring 3Oil pressure regulator plug
Inspection
Inspect valve piston for scoring or other damagesCheck compression spring for free lengthCOMPRESSION SPRING FREE LENGTH NEW NOMINAL SERVICE LIMIT 64 mm (2.519 in) 62 mm (2.441 in)
R400motr118A
Replace both parts if important wear or damage are presentClean bore and threads in the oil pump housing from metal shavings and other contaminations
1Intermediate gear 2Pin