79953Q 2 Mariner SCREW KIT, (.375-16 x .250) Drain (.375-16 X .25)

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PSP FOR EXHAUST MANIFOLD LEAKS ON CERTAIN 3608 ENGINES - PS0383 - MAILED US AND CANADA, LIMITED CACO, LIMITED COFA, LIM ITED CFEL, LIMITED COSA
  The information supplied in this service letter may not be valid after the termination date of this program.   Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.
U-198 A-129.1 AU-129.2 E-87.1 O-121.1 1059 PS0383 This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS0383" as Part Number, "7755" as Group Number, and "96" as Description Code. Termination Date
October 31, 1990
Problem
The exhaust manifolds may leak at the joints on certain 3608 Engines. The exhaust leaks can cause complaints and concern due to the smoke and soot in the engine room or area.
Affected Product
Model Identification Number 3608 6MC1-276
Parts Needed
Parts required for all Affected Product 1 - 7E0023 Manifold 112 - 8C8829 Bolt 112 - 8C8825 Locknut 6 - 7E0024 Manifold 14 - 9Y3099 Gasket 7 - 9Y9320 Bellows Assembly 1 - 7E0025 Manifold 2 - 3M7045 Plug 1 - 7E0026 Bellows Assembly 2 - 1W6963 Gasket 16 - 9X2059 Bolt 16 - 7E0031 Washer 16 - 8C8817 Locknut 32 - 5P8245 Washer 32 - 0S1587 Bolt 9 - 5M6213 Plug 9 - 4W8115 Adapter 8 - 1W3305 Gasket 1 - 2N0475 O-ring Seal 1 - 9S6130 Plug 1 - 6V5065 O-ring Seal 1 - 7E0596 Manifold 1 - 2W5023 Gasket 1 - 6V5139 Seal 1 - 6L7817 O-ring Seal 1 - 7E2785 Tube Assembly 1 - 2W4026 Gasket Additional parts required for Affected Product equipped with hardwrap. 1 - 7C2147 Shield Assembly 1 - 7C2148 Shield Assembly 1 - 7E1503 Shield Assembly 1 - 7E1504 Bracket Assembly 1 - 7E1502 Shield Assembly 2 - 8T4179 Bolt 2 - 8T4223 Washer 20 - 9S2087 Screw 62 - 319831 Screw 2 - 7E1501 Shield Assembly Additional parts required for Affected Product equipped with softwrap. 1 - 7E2917 Shield Assembly 1 - 7E2918 Shield Assembly 1 - 7E2919 Shield Assembly 1 - 7E2920 Shield Assembly 1 - 7E2921 Shield Assembly 16 - 319831 Screw 4 - 8T4179 Bolt 4 - 8T4223 Washer 5P1275 Wire
Action Required
Replace the existing exhaust manifold group with the new 9Y3208 Exhaust Manifold Group. Changes to the water lines groups will have to be made to install the new manifolds. Tighten the 32-0S1587 Bolts (manifold to cylinder head) to a torque of 135 +/- 10 N.m (100 +/- 7 lb ft) again after the engine has been run for a minimum of five minutes at rated conditions. The hardwrap or softwrap will have to be replaced after the new manifolds are installed and the tightening procedure has been completed.
Service Claim Allowances
Product Caterpillar Dealer Suggested Customer Suggested smu/age Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs. whichever (C/L) (Sell) (C/L) (Sell) comes first 0-20,000 100% 24 0 0 0 0 0-36 mo This is a 24-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling. ****** IMAGE: SEBE4150.00001.001 CAPTION: