2) Disassembly
Clamp the feed pump with a vise and disassemble the hollow screw (30, 32), strainer (31) and seal
ring (35, 36).
Take off the priming pump (25), plug (16), both seal rings (18), spring (15), and check valve (14).
Take off the plug (7), seal ring (8), spring (6), and piston (5) on the piston side.
Pull out the snap ring (20) holding the tappet (10).
Disassemble the snap ring, then take off the tappet (10) and push rod (1).
3) Inspection
If the check valve is damaged or scored on its seat face, replace it with a new one.
Inspect the piston and tappet for damage.
Replace the push rod if excessively worn, and replace together with the pump housing if required. The
inspection for wear should be performed in the same procedure as for suction pressure test described
below.
4) Reassembly
Reassembly operation is performed in reverse order of disassembly. All the gaskets must be replaced
with new ones at reassembly.
SPC000006 5ton Diesel Engine
Page 104
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