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4.0L rear main seal depth?

Discussion in 'Stock 1995 - 2001 Explorers' started by redisette, June 14, 2011.

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    1. redisette

      redisette New Member

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      City, State:
      Jacksonville, FL
      Year, Model & Trim Level:
      '99 Sport
      Hello,
      I'm replacing the rear main seal on a '99 explorer 4.0L OHV engine. Insertion to a "critical" depth is mentioned many times on the net, but nowhere is the depth noted. The old one was about .125" past flush with the crankshaft, but given the quality of some of the previous repairs I've seen on this vehicle, I don't trust that depth. Ford's tool is not available to me. Otherwise, it would be a simple matter to measure the lip on the tool. There is a depth of .413" mentioned on the net, but that number cannot be correct... There isn't that much room.
      Can anyone help me with this?
      Thank you.
      redisette
       
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    3. 2000StreetRod

      2000StreetRod Staff Member Moderator Elite Explorer

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      00 Sport FI, 03 Ltd V8
      rear main seal replacement

      I don't have access to my vehicle docs at this time but posts 396 and 398 of the following thread may be helpful: SOHC V6 Timing Chain Saga
       
    4. BrooklynBay

      BrooklynBay Moderator & long time member. Staff Member Moderator Elite Explorer

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      Welcome to this forum! I've moved your thread into the stock 95-01 section. It's easy to make your own tool out of PVC. Check # 68 in my list of useful threads.
       
    5. 2000StreetRod

      2000StreetRod Staff Member Moderator Elite Explorer

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      City, State:
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      Year, Model & Trim Level:
      00 Sport FI, 03 Ltd V8
      rear seal spec

      My Haynes Repair Manual states for 1996 and later the crankshaft rear seal should be flush with the block.
       

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