(57) A mounting arrangement for mounting a fuel pump (10) on an engine (14), the fuel
pump comprising a housing (22) and a drive shaft (24) which can pass through an opening
(16) in a block (12) of the engine for connecting with, and being actuable by, a rotary
part (20) of the engine, the mounting arrangement comprising a cylindrical mounting
boss (36) having a guide section (38) for guiding the drive shaft and a mounting section
(40) extending away from the block, the outer edge of the mounting section defining
an outwardly facing surface (44) for engaging a corresponding first abutment surface
(48) on the housing of the fuel pump; a sealing ring (50) positionable between the
outwardly facing surface and the first abutment surface; a clamping ring (54) having
an internally threaded portion (56) and an annular lip (58); an annular flange (42)
defining a second abutment surface (46) engagable by the annular lip; and an externally
threaded portion (32) for screw threaded engagement by the internally threaded portion
of the clamping ring; the arrangement being such that, on screw threading the internally
threaded portion of the clamping ring to the externally threaded portion until the
annular lip engages the second abutment surface, the first abutment surface engages
the outwardly facing surface with the sealing ring therebetween to form a substantially
fluid tight seal therebetween, and the fuel pump is mounted on the engine. This arrangement
is easier to assemble with less risk of oil leakage.
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