Subject: Hydraulic Chain Tensioner Kit Models: 911 1984
Bulletin Number: 84 – 01
Hydraulic chain tensioners were introduced with the start of production for the 1984 Model Year. These new chain tensioners may be retrofit to all 1968 and later 911 vehicles by using the following conversion kits:
Installation kit for left chain tensioner
Part No. 930.105.911.00
Consists of:
1 cover, left Part No. 930.105.063.08
1 plug N 016.155.3
1 seal N 013.814.2
1 oil hose 930.107.347.01
1 chain tensioner 930.105.058.03
1 seal 999.701.690.40
1 hollow union bolt N 021.073.1
2 seals N 013.807.2
1 coupling nut 900.104.003.02
1 self-tapping ring N 020.825.1
Installation kit for right chain tensioner
Part No. 930.105.912.01
Consists of:
1 cover, right Part No. 930.105.064.07
1 oil hose 930.107.348.02
1 oil hose 930.107.348.03
1 chain tensioner 930.105.058.03
1 seal 999.701.90.40
1 hollow union bolt N 021.073.1
2 seals N 013.807.2
1 coupling nut 900.104.003.02
1 self-tapping ring N 020.825
Installation Procedure
Note
The procedure for installing hydraulic chain tensioners is the same as for replacing the non-hydraulic version.
- Remove timing case covers
- Install new hydraulic tensioners in place of original tensioners.
Note:
The chain tensioners each have an oil feed boss which will protrude through bores in the new timing case covers. External oil lines connect to this inlet and a fitting on the new camshaft supply hoses
- Mount O-ring seals on oil feed boss of chain tensioners to provide seal between tensioners and timing case covers
- Install new timing case covers
Replace oil supply hoses to camshafts with hoses supplied in kits.
Additional Parts Required
1 – Adaptor Block Part No. 911.107.704.00
2– Seal Ring N 013.812.5-
3– Hollow Union Bolt 91.107.709.01
4– Threaded Plug 900.219.009.30
5– Seal Ring 900.123.009.20
Note
On 1968 through 1973 Models, the right side oil supply hose will be not long enough as provided. To correct, install adapter block where inboard end of hose connects to case.
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