Inspection of the Engine Mount (Noise Emission Control)
Note: At engine overhaul, and whenever the engine has been removed, inspect the lower and upper isolators (see Fig., Refs. 1 and 6), and replace them if they are worn. See of the Century Class Trucks Workshop Manual for procedures.
Table 1, Drive Belt Tension
|
Drive Belt Tension |
||
|---|---|---|
|
Engine |
Component |
Belt Tension: lbf (kg) |
|
Caterpillar C10 (3176) |
Refrigerant Compressor |
80 to 100 (36 to 45) |
|
Caterpillar 3406E |
Alternator and Refrigerant Compressor |
40 to 50 (18 to 23), per belt |
|
Fan |
80 to 100 (36 to 45) |
|
|
Cummins M11 |
Alternator |
90 to 120 (41 to 55) |
|
Fan |
155 to 165 (70 to 75) |
|
|
Refrigerant Compressor |
80 to 100 (36 to 45) |
|
|
Cummins N14 |
Alternator |
40 to 50 (18 to 23), per belt |
|
Fan |
80 to 120 (36 to 55) |
|
|
Refrigerant Compressor |
80 to 100 (36 to 45) |
|
|
Detroit Diesel Series 60 |
Alternator and Refrigerant Compressor |
80 to 100 (36 to 45), Power Band |
|
Fan |
60 to 80 (27 to 36) |
|
Table 1, Drive Belt Tension
Periodically inspect the rubber isolators for cracks, cuts, wear, or damage, and replace them if necessary. See of the Century Class Trucks Workshop Manual for isolator replacement procedures.
-
Lower Isolator
-
Engine-Support Washer
-
3/4–10 Capscrew
-
3/4–10 Hexnut
-
Engine Mount
-
Upper Isolator