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Mercury 4.2 Diesel

Mercury 4.2 Diesel
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Section 4 - Maintenance
Page 92 90-8M0113987 eng DECEMBER 2015
Power‑Assisted Steering Pump Belt
Inspection
1. Inspect the belt for proper tension and for the following:
Excessive wear
Cracks
Fraying
Glazed surfaces
2.
Replace the belt if worn or damaged. See Replacement.
3. Check belt tension by depressing the upper strand of the belt, with moderate hand pressure, at the point shown. The belt
must correspond to the specifications in the following table.
2.8 shown, 4.2 similar
a - Power steering pump belt
Power‑assisted steering drive belt tension
Belt deflection, with moderate hand pressure 5 mm (3/16 in.)
4.
Adjust the tension if necessary. See Adjustment.
Adjustment
1. Loosen the power‑assisted steering pump mounting bolts.
2.8 shown, 4.2 similar
a - Mounting bolts
2. Use the adjustment screw to move the power‑assisted steering pump to tension the power‑assisted steering belt.
a -
Mounting bolts
b - Adjustment screw
a
23632
23767
aa
23650
aa
b

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