Alternator Belt Service; Fan Belt Service - Toro Groundsmaster 300 Series Service Manual

Alternator Belt Service (Fig. 25)
1. Unlatch and open hood.
2. Check tension by depressing belt midway between
alternator and crankshaft pulleys. Belt should deflect
7/16 in. (11 mm). If deflection is incorrect, proceed to
step 3. If correct, continue operation.
3. Loosen bolt securing brace to engine and bolt secur-
ing alternator to brace.
4. Insert pry bar between alternator and engine and pry
out alternator.
5. Hold alternator in position after proper belt tension
setting is achieved and tighten alternator and brace
bolts to secure adjustment.
Fan Belt Service (Fig. 25, 26)
1. Unlatch and open hood.
2. Remove capscrews (5) securing fan belt guard and
remove guard.
3. Belt should deflect 1/4 in. (6 mm) midway between
pulleys with 5 lbf (22 N) of force applied. If deflection is
incorrect, proceed to step 4. If correct proceed to step 5.
4. Loosen locknut securing idler pulley. Push idler pulley
against belt until proper deflection is achieved and
tighten idler pulley locknut.
5. Install fan belt guard and secure with capscrews.
Close and latch hood.
To replace belt:
1. Do steps 1 and 2 above.
2. Loosen locknut securing idler pulley, slide pulley
away from belt and remove belt from top and bottom
pulleys.
3. Install new belt and adjust for proper tension. Push
idler pulley against belt until belt deflects 1/4 in. (6 mm)
with 5 lbf (22 N) of force applied midway between top
and bottom pulleys. Tighten idler pulley locknut to se-
cure adjustment.
4. Install fan belt guard and secure with capscrews.
Close and latch hood.
NOTE: Check fan belt tension after first days of opera-
tion. Readjust tension, if necessary.
®
Groundsmaster 300 Series
1. Alternator
2. Engine brace bolt
3. Alternator brace bolt
Page 4 - 27
Figure 25
4. Brace
5. Fan belt guard
Figure 26
1. 1/4 in. (6 mm) deflection
2. Idler pulley locknut
External Engine Component Repair