Chevrolet Cobalt Service & Repair Manual: Timing Chain Tensioner R & R
| 1. |
Disconnect the negative battery cable. |
| 2. |
Remove the camshaft cover. |
| 3. |
Remove the timing chain tensioner,
Fig. 1. |
| 4. |
Remove the seal from the tensioner. |
| 5. |
Reverse procedure to install, noting
the following: |
| |
a. |
Inspect the timing chain tensioner.
If the timing chain tensioner, O-ring seal, or washer is damaged,
replace the timing chain tensioner or O-ring seal as applicable. |
| |
b. |
Measure the timing chain tensioner
assembly from end to end. If the timing chain tensioner is to be
replaced, a new tensioner should be supplied in the fully compressed
non-active state. A tensioner in the compressed state will measure
2.83 inch (a) from end to end. A tensioner in the active state will
measure 3.35 inch (a) from end to end. |
| |
c. |
If the timing chain tensioner is not
in the compressed state, perform the following steps: Remove the
piston assembly from the body of the timing chain tensioner by pulling
it out. Install tool No. J-45027-2 (2) into a vise, then install
the notch end of the piston assembly into tool No. J-45027-2 (2).
Using tool No. J-45027-1 (1), turn the ratchet cylinder into the
piston, Fig. 2. |
| |
d. |
Torque timing chain tensioner
to 55 ft. lbs. |
| |
e. |
Torque camshaft cover and bolts
to 89 inch lbs. |
|
Fig. 1 Timing chain tensioner replacement
Fig. 2 Timing chain tensioner Installation
1.
Remove the engine coolant temperature
sensor, Fig. 1.
2.
Remove the thermostat and water feed
pipe retaining bolts, Fig. 2.
...
Caution: With the timing chain
removed, avoid turning the camshaft or crankshaft. If movement is required,
exercise extreme caution to avoid valve damage caused by piston contact.
...
See also:
Chevrolet Cobalt Owners Manual. Preface
GENERAL MOTORS, GM, the GM Emblem,
CHEVROLET, the CHEVROLET Emblem, and
the name COBALT are registered trademarks of
General Motors.
This manual describes features that may or may
not be on your specific vehicle either because they
are options that you did not purchase or due to changes
sub ...
Chevrolet Cobalt Owners Manual
Chevrolet Cobalt Service Manual
Water Pump Assembly R&R
Timing Chain, Replace