Toro groundsmaster 455-D - Timing Belt Replacement

Timing Belt Replacement
Timing Belt Removal
IMPORTANT: Never install a used belt. When the
timing belt is removed a NEW timing belt must be
installed.
SPECIAL TOOLS REQUIRED:
Tune-Up Tool Set TOR 4035
1 ea. M8 x 125 x 40 Metric Bolt
2 ea. M8 x 125 x 35 Metric Bolt
1. Slowly turn the crankshaft in the operating direction
(
clockwise as viewed from the timing belt end) until the
TDC Lock Pin tool (TOR 70153N) goes into the hole in
the flywheel (Fig. 42).
2. Remove the crankshaft pulley bolt (Fig. 43, Item 1)
and t
he pulley. Note: The bolt is secured with thread
locking compound and will be difficult to remove.
3. Remove cover attachment nut (Item 5), cover clips
and t
iming belt covers (Item 2, 3 and 4) in the numbered
order.
4. Re-install the crankshaft bolt (Fig. 44, Item 1) and the
was
her.
5. Lock the camshaft gear (Item 6) in position by install-
ing an M8 x 125 x 40 bolt. Tighten finger tight.
6. Lock the injection pump gear (Item 7) in position with
two M8 x 125 x 35 bolts. Tighten finger tight.
IMPORTANT: To prevent damage to the face of the
i
njector pump housing and future timing problems,
the camshaft gear and injection pump gear locking
bolts must be tightened ONLY FINGER TIGHT.
NOTE: If the bolts in steps 5 and 6 cannot be installed
bec
ause the holes in the gears and engine block do not
align, remove the TDC Lock Pin tool and rotate the
engine (clockwise) one revolution. Install the TDC Lock
Pin, then install the bolts as instructed in steps 5 and 6.
TOR 70153N
Figure 42
5
Figure 43
Figure 44
Engine Page 3 - 36
Rev. B
Groundsmaster 455-D