Toyota Camry Timing Belt/Chain Questions

183 messages, Last post on Oct 22, 2009 at 7:09 PM

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#182 of 183 Re: 1993 Toyota Camry 2.2L Camshaft Question - Exhaust Camshaft service bolt? [karl99] by kiawah Oct 22, 2009 (7:04 pm)
Replying to: karl99 (Oct 22, 2009 6:30 pm) So you can see what was to happen on dis-assembly: 35. REMOVE CAMSHAFTS NOTICE: Since the thrust clearance of the camshaft is small, the camshaft must be kept level while it is being removed. If the camshaft is not kept level, the portion of the cylinder head receiving the shaft thrust may crack or be damaged, causing the camshaft to seize or break. To avoid this, the following steps should be carried out. A. Remove exhaust camshaft (a) Set the knock pin of the intake camshaft at 10–45° BTDC of camshaft position. HINT: The above angle allows No.2 and No.4 cylinder cam lobes of the exhaust camshaft to push their valve lifters evenly. (b) Secure the exhaust camshaft sub gear to drive gear with a service bolt. Recommended service bolt: Thread diameter6 mm Thread pitch 1.0 mm Bolt length 16–20 m m (0.63–0.79 in.) HINT: When removing the camshaft, make sure that the torsional spring force of the sub gear has been eliminated by the above operation. Replies to this message: kiawah (Oct 22, 2009 7:09 pm)
#183 of 183 Re: 1993 Toyota Camry 2.2L Camshaft Question - Exhaust Camshaft service bolt? [kiawah] by kiawah Oct 22, 2009 (7:09 pm)
Replying to: kiawah (Oct 22, 2009 7:04 pm) And on re-assembly: B. Install exhaust camshaft (a) Set the knock pin of the intake camshaft at 10–45° BTDC of camshaft angle. HINT: The above angle allows the No.2 and No.4 cylinder cam lobes of the exhaust camshaft to push their valve lifters evenly. (b) Apply MP grease to the thrust portion of the cam– shaft. (c) Engage the exhaust camshaft gear to the intake cam– shaft gear by matching the timing marks on each gear. (d) Roll down the exhaust camshaft onto the bearing journals while engaging gears with each other. NOTICE: There are also assembly reference marks on each gear as shown in the Illustration. Do not use these marks. 5. CHECK AND ADJUST VALVE CLEARANCE (See page EG1–12) Turn the camshaft and position the cam lobe upward, and check and adjust the valve clearance. Valve clearance (Cold): Intake 0.19 – 0.29 mm (0.007 – 0.011 In.) Exhaust 0.28 – 0.38 mm (0.011 – 0.015 In.) (e) Turn the intake camshaft clockwise or counterclockwise little by little until the exhaust camshaft sits in the bearing journals evenly without rocking the cam– shaft on the bearing journals. NOTICE: It is very important to replace the camshaft in the bearing journals evenly while tightening bearing caps in the subsequent steps. (f) Install the bearing caps in their proper locations. (g) Apply a light coat of engine oil on the threads and under the heads of the bearing cap bolts. (h) Install and uniformly tighten the 10 bearing cap bolts in several passes, in the sequence shown. Torque: 19 N–m (190 kgf–cm, 14 ft–lbf) (i) Remove the service bolt (B). 5S–FE ENGINE – ENGINE MECHANICAL EG1–71

#182 of 183: Re: 1993 Toyota Camry 2.2L Camshaft Question - Exhaust Camshaft service bolt? [karl99] by kiawah; Oct 22, 2009 (7:04 pm)

Replying to: karl99 (Oct 22, 2009 6:30 pm)

So you can see what was to happen on dis-assembly:

35. REMOVE CAMSHAFTS
NOTICE: Since the thrust clearance of the camshaft is
small, the camshaft must be kept level while it is being
removed. If the camshaft is not kept level, the portion of
the cylinder head receiving the shaft thrust may crack or
be damaged, causing the camshaft to seize or break. To
avoid this, the following steps should be carried out.

A. Remove exhaust camshaft
(a) Set the knock pin of the intake camshaft at 10–45°
BTDC of camshaft position.
HINT: The above angle allows No.2 and No.4 cylinder
cam lobes of the exhaust camshaft to push their valve
lifters evenly.

(b) Secure the exhaust camshaft sub gear to drive gear
with a service bolt.
Recommended service bolt:
Thread diameter6 mm
Thread pitch 1.0 mm
Bolt length 16–20 m m (0.63–0.79 in.)
HINT: When removing the camshaft, make sure that
the torsional spring force of the sub gear has been
eliminated by the above operation.

kiawah (Oct 22, 2009 7:09 pm)

#183 of 183: Re: 1993 Toyota Camry 2.2L Camshaft Question - Exhaust Camshaft service bolt? [kiawah] by kiawah; Oct 22, 2009 (7:09 pm)

Replying to: kiawah (Oct 22, 2009 7:04 pm)

And on re-assembly:

B. Install exhaust camshaft
(a) Set the knock pin of the intake camshaft at 10–45°
BTDC of camshaft angle.
HINT: The above angle allows the No.2 and No.4
cylinder cam lobes of the exhaust camshaft to push
their valve lifters evenly.

(b) Apply MP grease to the thrust portion of the cam–
shaft.
(c) Engage the exhaust camshaft gear to the intake cam–
shaft gear by matching the timing marks on each gear.
(d) Roll down the exhaust camshaft onto the bearing
journals while engaging gears with each other.
NOTICE: There are also assembly reference marks on
each gear as shown in the Illustration. Do not use these
marks.

5. CHECK AND ADJUST VALVE CLEARANCE
(See page EG1–12)
Turn the camshaft and position the cam lobe upward,
and check and adjust the valve clearance.
Valve clearance (Cold):
Intake
0.19 – 0.29 mm (0.007 – 0.011 In.)
Exhaust
0.28 – 0.38 mm (0.011 – 0.015 In.)
(e) Turn the intake camshaft clockwise or counterclockwise little
by little until the exhaust camshaft sits in
the bearing journals evenly without rocking the cam–
shaft on the bearing journals.
NOTICE: It is very important to replace the camshaft in
the bearing journals evenly while tightening bearing caps
in the subsequent steps.
(f) Install the bearing caps in their proper locations.
(g) Apply a light coat of engine oil on the threads and
under the heads of the bearing cap bolts.
(h) Install and uniformly tighten the 10 bearing cap bolts
in several passes, in the sequence shown.
Torque: 19 N–m (190 kgf–cm, 14 ft–lbf)

(i) Remove the service bolt (B).

5S–FE ENGINE – ENGINE MECHANICAL
EG1–71