Table 9-3. Preventive Maintenance Checks and Services for Electrical Power Systems(Continued)
B - Before
D - During
A - After
H - Hourly Interval
CHECK FOR AND HAVE
IS NOT READY/
REPAIRED OR ADJUSTED
B D A
Check water pump belts for damage,
fraying, improper wear, and correct ten-
When belt replacement is necessary, belts
must be replaced in complete, matched
sets. Never replace only one belt. The new
belt will carry all the load and fail rapidly.
To check belt tension, press down on
the longest unsupported length of the
belt without using undue exertion.
Normal tension should allow the belt
to be depressed approximately 3/8 in.
Adjust belt tension, as required as fol-
(a) Loosen adjusting setscrews and
bracket support bolts.
(b) Move the alternator or water
pump to obtain the correct belt
tension. Hold in correct position.
(c) Tighten the adjusting setscrews.
To replace water pump belts:
(a) Loosen the adjusting lever
setscrews and bracket support
bolts. Pivot the alternator/water
pump towards the cylinder block.
(b) Turn the engine by hand to work
the belts off the pulleys.
(c) Remove and replace the belts.
(d) Reverse the process for refitting
the belts on the pulleys.