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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
Bobcat 632 - Blown Head Gasket?
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<blockquote data-quote="Ster1" data-source="post: 124064" data-attributes="member: 20800"><p>Your torquing sequence is 20-30 then 50-55, then 65-70 Tighten them in a crisscross pattern as shown in the manual (you do have a manual for this engine?). First pattern to 30, second pattern to 55, last pattern to 70, as an example.</p><p></p><p> Those are straight torques not yield torques. Don't kill your self cleaning out threads. Before you put the head on, clean off the bolts a little with a wire brush, and run them into the block. If they go in easy, which they should, you're golden. Don't go running taps into there unless you have to, and by all means start slow and easy if you do, by hand. It's easy to get a tap out of alignment and wreck the threads in the block. Best to use a thread chaser anyway, but again you probably won't have to. </p><p></p><p>The manual doesn't specify dry threads or oiled threads. Usually that means threads need to be clean and dry. In our engine, I don't think it matters much. Mine had oil on em, so they were wet. I torqued them to the lower value of the range. I'm other words, I torqued them to 20-50-65. If your bolts are oily, use the lower range. If they're dry, use the upper range. </p><p></p><p>Keep clicking the wrench until the bolt stops turning.</p></blockquote><p></p>
[QUOTE="Ster1, post: 124064, member: 20800"] Your torquing sequence is 20-30 then 50-55, then 65-70 Tighten them in a crisscross pattern as shown in the manual (you do have a manual for this engine?). First pattern to 30, second pattern to 55, last pattern to 70, as an example. Those are straight torques not yield torques. Don’t kill your self cleaning out threads. Before you put the head on, clean off the bolts a little with a wire brush, and run them into the block. If they go in easy, which they should, you’re golden. Don’t go running taps into there unless you have to, and by all means start slow and easy if you do, by hand. It’s easy to get a tap out of alignment and wreck the threads in the block. Best to use a thread chaser anyway, but again you probably won’t have to. The manual doesn’t specify dry threads or oiled threads. Usually that means threads need to be clean and dry. In our engine, I don’t think it matters much. Mine had oil on em, so they were wet. I torqued them to the lower value of the range. I’m other words, I torqued them to 20-50-65. If your bolts are oily, use the lower range. If they’re dry, use the upper range. Keep clicking the wrench until the bolt stops turning. [/QUOTE]
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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
Bobcat 632 - Blown Head Gasket?
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