Chain Tensioner - Correct Part Installation Order
911/911 Turbo All1/01 1536
Binder - Service Technical Bulletins
Chain Tensioner - Replacement Spare Parts
12-21-01
Vehicle Type:
911 All/911 Turbo All
Model Year:
Up to 1983 (D)
Concern:
Replacement chain tensioner part number 930 105 053 00.
Information:
From January 1st 2000 to May 1st 2001 some chain tensioners, supplied as a spare part, may have been delivered with the compression spring and the piston installed in the incorrect order (see Figure 1).
Prior to installation of a new chain tensioner a visual inspection should be done to check for the correct installed position of the compression spring (Figure 1, Item 4) and piston (Figure 1, Item 5).
Chain tensioners delivered after May 1st 2001 have been tested and found in working order.
Chain tensioner - Part No.930.108.053.00
Installation of chain tensioners that have been assembled incorrectly may lead to engine damage during driving.
> Before installing new chain tensioners, check weather the compression spring (Figure 1 Item 4) and the piston (Figure 1 Item 5) are installed in the correct order.
Work Procedure:
Perform visual inspection of chain tensioner before installation:
On a correctly assembled chain tensioner, the compression spring is visible under the spring seat between the spring seat and piston (Figure 2, arrow).
On an incorrectly assembled chain tensioner, only the piston is visible under the spring seat. In this case, the piston covers the compression spring.
If a chain tensioner with an incorrectly installed piston and compression spring is found it must be exchanged for a good unit.
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