FIELD: mechanical engineering; internal combustion engines.
SUBSTANCE: proposed automatic unit has body with base on which cylindrical sleeve is mounted for forming circular chamber for oil together with body, cover with rigidly secured plunger of sleeve whose bottom has passage for delivery of oil from circular chamber and ball-type check valve. Mounted in circular chamber coaxially relative to outer surface of sleeve is spacer spring engageable with cover; outer surface of cover has axial projection made in form of shell engageable with body and seal. Provided in body on side of cover is inner circular bead rigidly engageable with part of outer surface of sleeve, thus forming closed circular chamber.. Spacer spring is mounted coaxially relative to outer surface of circular bead and inner surface of said axial projection of cover and outer surface of body form mud-proof labyrinth seal.
EFFECT: enhanced serviceability and reliability.
1 dwg
