Page 244
REPAIR INSTRUCTIONS
Camshaft Idler Gear Installation
[213 DE]
Before installing the idler gear/hub assembly,
determine which is the top mounting hole on the
hub.
The idler gear is held in place by a flanged hub
mounted to the cylinder block by three bolts.
Although the bolt-mounting pattern may
appear
symmetrical, it is not. The non-symmetrical
mounting pattern ensures that oil feed passages
in the hub will be properly aligned with the oil feed
passage in the cylinder block, which lubricates
the idler gear hub bushing.
To aid in aligning the hub to the mounting holes in
the cylinder block, at the 12-o’clock position
(engine upright), the hub mounting bolt hole is
identified by the word “UP” steel-stamped just
below the mounting hole.
1. With the engine in an upright position and
the hub correctly aligned with the mounting
bolt holes, place idler hub against the block
and verify good mounting hole alignment
(Figure 264).
264
Figure 264 — Hub Correctly Positioned on Block
2. Align the timing marks. First look at the
timing marks on both the camshaft and
crankshaft gears. Note that two teeth are
marked (side by side) on each gear. These
two timing marks must align with the single
timing marks on the idler gear. When
properly installed, the two single timing
marks on the idler gear will fall between the
two timing marks on the camshaft and
crankshaft gears. To attain correct
alignment, rotate the crankshaft and
camshaft gears until the camshaft timing
marks are in approximately the
3:30 position, and the crankshaft gear timing
marks are in approximately the 1 o’clock
position (with engine in the upright position
and viewed from the front).
5_106_00.bk Page 244 Friday, August 4, 2000 11:17 AM
BDC for engine manuals and specs
