262
CID (4.3L) ENGINES
SERVICE MANUAL NUMBER 25
Disassembly
1.
Remove pump cover.
IMPORTANT: Mark gear teeth for reassembly with same teeth indexing.
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
pressure.
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.
Reassembly
CAUTION
Be careful of twisting, shearing or collapsing pipe while installing in pump. Pickup
screen must be parallel to oil pan bottom when oil pump is installed.
If pickup screen and pipe assembly was removed, mount pump in a soft-jawed vise, apply
Quicksilver Perfect Seal to end of new pipe and, using oil pump suction pipe installer
(J-21882), tap the pipe in place with a hammer.
IMPORTANT: Oil internal parts liberally before installation.
1.
2.
3.
Install pressure regulator valve and related parts.
Install drive gear in pump body.
Install idler gear in pump body with smooth side of gear toward pump cover opening.
Align marks made in disassembly.
4.
5.
6.
Fill gear cavity with engine oil.
Install pump cover and torque attaching bolts to 106 lb-in. (12 Nm).
Turn extension shaft by hand to check for smooth operation.
Index
Page 3A-58
90-861328--1 NOVEMBER 1999
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 1262 CID, Mercury MerCruiser 262 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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