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Mercury/Mariner 3.0 MPI ECT User Manual

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Section 5 - Maintenance
90-8M0074347 eng OCTOBER 2012 Page 77
Replacing Belts on Front Mount Models
a - Power steering belt
b - Alternator belt
c - Alternator
d - Spacer block
e - Crank position sensor
Power Steering Pump Drive Belt
1. Loosen power steering pump attaching bolts and mounting bolts.
2. Pivot power steering pump toward engine, as required, until belt can be removed.
3. Install new drive belt on pulleys. Adjust tension.
Alternator Belt
1. Remove the power steering belt, if equipped.
2. Remove the two screws and washers from the front engine mount bracket assembly on the port side.
3. Remove the spacer block between the bracket assembly and the engine block. You may need to tap gently on the spacer.
4. Loosen the alternator. Remove and replace the alternator belt.
5. Replace the spacer block between the bracket assembly and the engine block. Install the two screws using the washers
removed previously.
6. Adjust the crank position sensor so the gap between the sensor and the flywheel meets the following specification.
Description
Specification
Crankshaft position sensor air gap 0.040 in.
7. Tighten the two spacer block bolts. If necessary, you can loosen the crankshaft position sensor bolts to move the sensor
into position. Tighten all bolts to specification.
Description
Nm lb‑in. lb‑ft
Spacer block bolts 68 50
Crankshaft position sensor bolts 2 18
8. Install power steering belt, if equipped. Adjust the tension of both drive belts.
Description
Deflection 6 mm ( 1/4 in.)
Replacing Belts on Side Mount Models
Power Steering Pump Drive Belt
1. Loosen power steering pump attaching bolts and mounting bolts.
2. Pivot power steering pump toward the engine until you can remove the belt.
3. Install the new drive belt. Adjust the tension to the following specification.
Description
Deflection 6 mm (1/4 in.)
32557
a
b
c
d
e

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Mercury/Mariner 3.0 MPI ECT Specifications

General IconGeneral
BrandMercury/Mariner
Model3.0 MPI ECT
CategoryEngine
LanguageEnglish