5.0l
/ 305 cid / 5.7l / 350 cid ENGINES
SERVICE MANUAL NUMBER 24
Removal
1.
2.
Remove oil pan as outlined.
Remove gasket carefully as the one-piece gasket for the oil pan may be reused if still
pliable and not cracked, torn or otherwise damaged.
3.
Remove baffle.
a
b
c
72344
a - Nuts (5)
b - Baffle
c - Oil Pump
4.
Remove oil pump.
Disassembly
Refer to “Exploded View” in this section.
Remove pump cover.
IMPORTANT: Mark gear teeth for reassembly with same teeth indexing.
1.
2.
3.
Remove idler gear and drive gear from pump body.
Remove retaining pin, spring and pressure regulator valve from pump cover.
IMPORTANT: Do not remove pickup screen and pipe assembly unless replacement
is necessary. Loss of press fit condition could result in an air leak and loss of oil pres-
sure.
IMPORTANT: Do not disturb pickup screen on pipe. This is serviced as an assembly.
4.
If pickup screen and pipe assembly requires replacement, mount pump in a soft-jawed
vise and extract pipe from pump.
Cleaning and Inspection
1.
2.
3.
4.
5.
6.
7.
Wash all parts in cleaning solvent and dry with compressed air.
Inspect pump body and cover for cracks or excessive wear.
Inspect pump gears for damage and excessive wear.
Check for loose drive gear shaft in pump body.
Inspect inside of pump cover for wear that would permit oil to leak past ends of gears.
Inspect pickup screen and pipe assembly for damage to screen and pipe.
Check pressure regulator valve for fit.
IMPORTANT: Pump gears and body are not serviced separately. If pump gears or
body are damaged or worn, replacement of entire oil pump assembly is necessary.
Index
Page 3A-48
90-861327--1 OCTOBER 1999
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 305 CID, Mercury MerCruiser 350 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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Marine readers have rated Mercury MerCruiser Engines Service Manual Number 24 GM V-8 305 CID 350 CID 4.0 out of 4.0 based on 1 product reviews. Great performance engine.
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