Cam Chain Tensioner - Rattling Noise

86saab03

FILE IN S.I. Man VOL. I

SEC. A-2 PG. 199
Service Information

SUBJECT: NEW CAM CHAIN TENSIONER AS A ISSUE: 11/86-909 SERVICE ALTERNATIVE


APPLICATION: 900 MODELS WITH 16 VALVE ENGINES
A new cam chain tensioner has been introduced as a service measure against noise complaints. Use the alternative design when replacement of the standard tensioner does not cure rattles from the camshaft drive mechanism (most noticeable at idle).

Cam Chain Tensioner P/N 75-85-086

Due to initial supply quantities, the new tensioner is now only available as a service measure and won't be production installed until later in the model year.



Do not remove the safety pin (see arrow) before the tensioner has been fitted into the engine.



Installing A New Tensioner:

1. Remove old tensioner from the engine.


2. Thread in the new design tensioner and tighten to 50 ft.lbs. (65 N-m).


3. Remove the safety pin as shown. The tensioning arm is now released.


4. Tighten the small plug nut to 16 ft. lbs. (22 N-m).
See Page 2 for tensioner servicing procedure



Servicing In-Use Tensioner:


1. If a new design tensioner has been removed for any reason a slightly different installation procedure is required.

Start by pushing the ratchet down and retracting the tensioner mechanism.

Fitting Center Bolt And Spring, Late Type.:

2. Thread in the tensioner and tighten to 50 ft.lbs. (65 N-m).


3. Insert the spring and plastic guide pin into the hole in the top of the tensioner assembly.


4. Fit the plug into the top of the tensioner and tighten to 16 ft.lbs. (22 N-m).

Be sure that the O-ring is seated properly.
Warranty Information: For warranty claims, use Failure Coding 21522-___ -0- ___-01. Labor Operation is #21522 for 0.7 hour.