Chapter 2 Part A 2.6L four-cylinder engine
BOLT “B”
CHAIN GUIDE “8
SPROCKET HOLDER
1 FLANGE BOLT (‘2)
i
FLANGE BOLTS ,t /
(SAME, MATCH HUB DIRECTION)
I I \ -.I?.-
CRANKSHAFT (SILENT
SHAFT) SPROCKET
I l.r%I.“L Y”l.I.2
CHAIN ‘WIDE “A”
9.16a Installing the silent shaft chain guide C
5 Drain the engine oil and remove the oil pan (see Chapter 15).
6 Remove the bolts attaching the timing chain cover to the engine block
(see illustration). Draw asimple diagram showing the location of each of
the bolts so they can be returned to the same holes from which they were
removed.
7 Tap the timing chain coverwith a soft-faced hammerto break the gas-
ket seal, then remove the cover from the engine block. Caution: P@ng
between the coverand the engine block can damage the gasket sealing
surfaces.
8 Remove the chain guides labeled A, Band C (see illustration). Each
guide is held in place by two bolts. Again, draw a simple diagram showing
the location of each bolt so they can be returned to the same holes from
which they were removed.
9 Reinstall the large bolt in the end of the crankshaft. Hold it in place with
awrench topreventthecrankshaftfromtuming whilelooseningthe bolton
the end of the right (passengerside) silent shaft, the bolt attaching the right
silent shaft drive sprocket to the oil pump shaft and the bolt in the end of the
left silent shaft.
10 Slidethecrankshaftsprocket, thesilentshaftsprocketsand thechain
off the engine as an assembly. Leave the bolt in the end of the crankshaft in
place. Do not lose the keys that index the sprockets to the shafts. ,,s
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Inspection
Z’l -:
11 Check the sprocket teeth for wear and damage. Check the spr&&et
cushion rings and ring guides (silent shaft sprockets only) for wear and
damage. Rotate the cushion rings and check for smooth operation. In-
spectthe chain forcracked side plates and pitted or worn rollers. Replace
any defective or worn parts with new ones.
Ins talla tion
Refer to illustrations 9.16a, 8.1 Sb, 9.16~ and 9.17
12 Before installing the silent shaft chain and sprockets, the timing chain
must be properly installed and the Number One piston must be at TDC on
thecompressionstroke. Bothsilentshaftsandtheoilpumpmustalso bein
place.
13 Slide the crankshaft sprocket part way onto the front of the crankshaft
by lining up the keyway in the sprocket with the key on the shaft.
14 Install the front silent shaft sprocket part way. The dished or recessed
side of the front silent shaft sprocket must face out. Install the silent shaft
chain onto the crankshaft sprocket and the front silent shaft sprocket. Line
up the plated links on the chain with the mating marks stamped into the
sprockets (see illustration 9.16~).
15 With the dished or recessed side facing in, slide rearz.!!ent shaft
sprocket part way onto the lower oil pump gear shaft. Line up the plated
link on the chain with the mating mark on the sprocket. Push the silent
shaft sprockets all the way onto their respective shafts, lining up the key-
ways in the sprockets with the keys on the shafts. Simultaneously, push
the crankshaft sprocket back until it bottoms on the crankshaft timing
chain sprocket. Recheck the position of the mating marks on the chain and
sprockets, then install the silent shaft sprocket bolts and tighten them to
the torque listed in illustration 9.8.
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