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  #1  
Old 09-22-2014, 11:54 AM
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Motor mount question

I recently replaced motor mounts on the SD. They came looking nice and tall but compressed immediately after they were installed. Is this normal?

The reason for the question is my new top oil cooler line is tied out of the way so that the power steering pump doesn't damage the line. I noticed more room when I lifted the engine.

Pics of the old & uninstalled new mounts are here:

http://www.peachparts.com/shopforum/diesel-discussion/341966-wife-said-sd-wouldnt-shut-off-led.html

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  #2  
Old 09-22-2014, 12:55 PM
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Common problem with current motor mounts. The solution is to fill them with Shore 30a urethane to provide support and prevent collapse.

Here's how to do it - http://www.peachparts.com/shopforum/3061724-post317.html

Here's the finished mounts ready for install.

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  #3  
Old 09-22-2014, 01:05 PM
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well, that's one way to go about it, but the stock motor mounts did not collapse immediately...

two questions.

1. what brand mount did you install?

2. exactly what part number did you order? and what did you get?
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  #4  
Old 09-22-2014, 01:46 PM
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Whoa

I went and looked at the pic of your old mount and the new one.

Can't clearly see the sides of the new mount but it looks like there are no markings. Not a good sign.

Looks to me like the old mounts were junk (not just worn out, junk). Never seen one completely pancake like that. Here is a pic of one of my old mounts (Mercedes OE) beside a new Lemforder.

And I felt that my old mounts were keerap.
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Motor mount question-mounts.jpg  
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  #5  
Old 09-22-2014, 02:54 PM
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I don't remember the brand but bought them here. The most expensive brand is only $20 Bilstein is $14.25. I'm not likely to have bought something lesser at those prices. I bought some Flexane to do shock mounts arount the same time which is June 2013. There isn't a lot of miles on the new part.

I don't have any service records but know that the PO was paying for labor and would fix 1/2 of the system. Front shocks were new. The rears totally gone. Brake master was new, front calipers & pads were shot with rotors below specs. I'm a little surprised how much I've spent on this thing but am almost done.
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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.
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  #6  
Old 09-22-2014, 03:13 PM
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I did a similar fill, but used cheaper black polyurethane roofing caulk (PL1, I recall, $6 for 10 oz tube) from Home Depot (post w/ photo). I just installed them in my 1984 300D (during another job), so won't know for a year or two how well they last, though I have found polyurethane to be very durable in other applications (50 yr warranty). The mounts on there were only ~2 yrs old, but were starting to sag and look pregnant. Probably DEA (India) or branded URO. I forget. Anyway, the rubber is still good, so I will fill those also.

Good you protected your oil cooler hose from that evil pwr steering pump V-belt. My son pulled into the driveway after a 500 mi drive a few years ago, with oil dripping everywhere and the AC belt broken and dragging the ground. The p.s. belt had flipped over so the "teeth" were outward, letting it "chain-saw" a small hole in the oil cooler hose. My guess is the AC belt broke, then tangled in the p.s. belt. There were still >2 qts of oil in the pan. Interrogation suggests it happened just 2 miles from home, since he lost AC and started hearing noises (real lucky). The motor mounts might have been a bit compressed, and the oil cooler hose cocked too much toward the p.s. pump. I had a spare cooler line. I will replace the hose on the old one to get ready of the next pass (good post here on that), though I wrapped the oil cooler hose w/ metal wire to protect it.
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  #7  
Old 09-22-2014, 08:32 PM
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I wrapped the cooler line with heater hose held in place by plastic ties. The hose is held out of the way by hose clamps tied to an AC line near the front.

I have some Flexane 80 from when I did the engine shock mounts and will check the specs.
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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.
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  #8  
Old 09-23-2014, 12:40 AM
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If you bought them here, I believe you can go back and see past orders.

The ones to get are lemforder or Phoenix....take a look at them, if you see no marks...as was said...that isn't good

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