MAINTENANCE
SERVICE MANUAL NUMBER 23
Inspecting
1.
•
Inspect drive belt for the following:
Excessive wear
•
Cracks
NOTE: Minor, transverse cracks (across the belt width) may be acceptable. Longitudinal
cracks (in direction of belt length) that join transverse cracks are NOT acceptable.
•
•
Fraying
Glazed surfaces
b
a
75130
a - Fraying
b - Cracks
Replacing and/or Adjusting Tension
1.
Remove drive belt as follows:
a. Loosen 5/8 in. locking nut on adjustment stud.
b. Turn adjustment stud and loosen belt. Remove belt.
Install drive belt on pulleys and adjust tension as follows:
2.
a. Loosen 5/8 in. locking nut on adjustment stud. Leave wrench on adjustment stud.
NOTE: Belt deflection is to be measured on the belt at the location that has the longest dis-
tance between two (2) pulleys. Proper tension is 1/4 in. (6 mm) deflection with moderate
thumb pressure.
b. Use 5/16 in. socket and tighten adjusting stud until the correct deflection of the belt
is obtained at location specified above.
c. While holding adjustment stud at the correct belt tension, tighten 5/8 in. locking nut.
d. Run engine for a short period of time and recheck belt adjustment.
a
b
74908
a - 5/8 in. Locking Nut
b - 5/16 in Adjusting Stud
Index
Page 1B-42
90-861326--1 MARCH 1999
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 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 GM V8 GM V8 454 CID 7.4L and 502 cid 8.2L Marine Engines Service Manual Number 23 5.0 out of 5.0 based on 1 product reviews. Just need the manual. Wrote review. Can't technically review what I haven't seen yet...