Diesel Generator-Checking/Adjusting Belt Tension; Alternator Belt Tensioning Procedure - Regal 3760 Owner's Manual

Diesel Generator-Checking/Adjusting Belt Tension

WARNING
!
AVOID SERIOUS INJURY OR DEATH FROM
ROTATING PARTS!
OPERATE THE GENERATOR ONLY
WHEN ALL GUARDS, SCREENS
AND COVERS ARE IN PLACE.
Check the belt tension at the service interval specified.
If the belt tension is not within specifications, adjust as
needed using the following procedures:
1. Remove the belt guard.
2. Check the belt tension at the midpoint of the longest
span of the belt using a belt tensioning tool set to 55 foot
pounds. Once installed recheck a new belt after 10
minutes of operation.
Note: If the belt tension is not within specifications, go
to step 3. If the belt tension is within specifications go to
step 7.
3. Loosen the pivot and adjusting screws.
4. While prying the seawater pump outward, tighten the
adjusting screw.
5. Tighten the pivot screw.
6. Recheck and adjust as necessary.
7. Replace the belt guard.
Note: Refer to the illustration on the next page.

Alternator Belt Tensioning Procedure

1. Remove the guard belt.
2. Check the belt tension at the midpoint of the longest
span of the belt by pressing with your finger. If the belt
is not within specifications go to step 3. If the belt is
within specifications go to step 7.
Belt Type
New
Used
3. Loosen the adjusting arm pivot screw, alternator pivot
screw, and alternator adjusting screw.
4. While prying the alternator outward, tighten the
alternator adjusting screw.
5. Tighten the adjusting arm pivot screw and alternator
pivot screw.
6. Recheck and adjust as necessary.
7. Replace the belt guard.
Note: Refer to the diagram on the next page.
170
Chapter 8
Deflection
.3-.5 inch
.4-.6 inch