Manual - Gravely pro-turn 460 diesel 992236 Operator's Manual

NOTICE: Set both bypass valves to the drive
position when finished adjusting the brake.
3
1 2
1. Jam Nuts
2. Spring
3. Trunnion
Figure 31
PTO BELT
WARNING: Moving parts can cut
or amputate body parts. ALWAYS
wait for moving parts to stop
before performing maintenance
or service.
CAUTION: Damaged or worn
belts may result in injury and/or
damage to unit. Check belts for
excessive wear or cracks often.
PTO Belt Access
1. Properly stop and park unit (See
Operation on page 16).
2. Lower the mower deck.
3. Place seat in most rearward position.
4. Remove belt covers.
5. Place foot board in open position
(Figure 32).
3.2 – 6.4 mm
(1/8 – 1/4")
3.8 cm
(1-1/2")
Replacing Mower Belts
(Figure 33)
NOTICE: Long PTO mower belt must be
removed to remove short mower belt.
CAUTION: Use care when
releasing idler spring tension.
Keep body parts well away from
idlers when performing this
operation.
1. Slowly release the tension on the long
mower belt idler (item 5) until all the
tension is removed from the springs
(item 3).
2. Remove the belt guide bolt (item 7) from
the idler arm.
3. Remove long mower belt (item 1) from
left blade sheave and remove from deck.
4. Slowly release the tension on the short
belt idler (item 4) until all the tension is
removed from the springs.
5. Remove short mower belt (item 2) from
right blade sheave and from deck. Idler
pivot bolt must be loosened slightly to
gain clearance to remove belt from under
idler pulley.
6. Arrange new mower belt(s) on deck
(short belt first). Retighten short mower
belt idler pivot bolt. Install belts on
sheaves. Put belts onto center sheave
last.
NOTICE: The PTO idler spring length range
is 31 – 31.8 cm (12 1/4 – 12 1/2") measured
at a 8.9 cm (3 1/2") cutting height. Adjust the
idler spring length as needed, see Figure 34.
7. Replace the belt guide bolt on the idler
arm.
EN - 38
Figure 32