 Help!!!, Mercedes MBE900 |
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 Aug 8 2017, 05:28 PM
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#1
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Advanced Member  Group: Advanced Members Posts: 412 Joined: 26-August 09 From: Mathews Va Member No.: 6,032  |
https://flic.kr/p/WVFGfS
Any help is appreciated. This is the 6th time I'm doing this job. The bolts for the fan belt tensioner mount keep breaking. I'm out of ideas. I have replaced everything. I've tried different grade bolts and even studs. I think the problem is with the metal surface you can see breaking away at the 2 bolt holes. If that's the case it will require a new engine as it is part of the block and not a cover. Any ideas or advice? The fan hub turns freely and is working properly. That's all this belt runs. |
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Aug 10 2017, 03:01 PM
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#2
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Advanced Member Group: Advanced Members Posts: 412 Joined: 26-August 09 From: Mathews Va Member No.: 6,032 |
The block is not aluminum. Funny I said something about electric fans too but I do not think they make them big enough that will fit. I would have to fill the front and rear of the radiator with them probably lol. Every time I look at the engine running on this truck, which is a lot now everything looks fine and then one evening I get the call or the warehouse will bring it to me with a belt squeal and bam! the tensioner and bracket are in the fan shroud. This truck is acting like the 2 damn Internationals I have lol
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Aug 10 2017, 04:15 PM
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#3
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Member Group: Advanced Members Posts: 233 Joined: 27-December 03 Member No.: 53 |
QUOTE (rocky @ Aug 10 2017, 11:01 AM)  The block is not aluminum. Funny I said something about electric fans too but I do not think they make them big enough that will fit. I would have to fill the front and rear of the radiator with them probably lol. Every time I look at the engine running on this truck, which is a lot now everything looks fine and then one evening I get the call or the warehouse will bring it to me with a belt squeal and bam! the tensioner and bracket are in the fan shroud. This truck is acting like the 2 damn Internationals I have lol It's not the bolt's fault. If the mounting surface is no longer flat and square, I don't care what kind of bolt you use it's going to break. That means a different block or you will have to have this one welded to build back up the surface and then machined. Cast iron can be welded by someone who knows what they are doing. Probably cheaper just to find a good used engine or block, I'm guessing. Also is there anything non-stock about the engine or accessories? |
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Posts in this topic
rocky Help!!! Aug 8 2017, 05:28 PM
nape Is it a clutch fan? Fan clutch not disengaging at ... Aug 9 2017, 09:16 PM
00SSHarrison QUOTE (nape @ Aug 9 2017, 09:16 PM) Is it... Aug 10 2017, 04:59 AM 00SSHarrison I tried to find some info on this but there is no ... Aug 10 2017, 05:10 AM rocky QUOTE (00SSHarrison @ Aug 10 2017, 01:10 ... Aug 10 2017, 02:55 PM trackbird The bolts appear to be cracking from fatigue. To m... Aug 10 2017, 11:24 AM rocky QUOTE (trackbird @ Aug 10 2017, 07:24 AM)... Aug 10 2017, 02:57 PM CrashTestDummy Is the block aluminum? If so, you should be able ... Aug 10 2017, 12:47 PM mikedamageinc Are electric fans an option? Aug 10 2017, 02:41 PM rocky QUOTE (PeteL @ Aug 10 2017, 12:15 PM) QUO... Aug 10 2017, 05:04 PM trackbird It's a little "hillbilly", but I won... Aug 10 2017, 05:11 PM rocky Hmm I did not think of that either. It is back tog... Aug 10 2017, 05:40 PM 00SSHarrison Do you know if the idle speed has been lowered? we... Aug 11 2017, 05:27 AM rocky It is idling at the same speed as the other ones I... Aug 11 2017, 12:32 PM CrashTestDummy And you've gone ahead and replaced the idler a... Aug 11 2017, 02:06 PM rocky QUOTE (CrashTestDummy @ Aug 11 2017, 10:0... Aug 21 2017, 03:39 PM CrashTestDummy QUOTE (rocky @ Aug 21 2017, 10:39 AM) QUO... Aug 22 2017, 01:52 AM Ojustracing One last thing. Does this truck idle with no surg... Aug 22 2017, 01:08 PM rocky Yes from what I can see it runs just as smooth as ... Aug 22 2017, 03:10 PM |
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