Jun 7, 2011. #1. I have a 1993, 75 Hp Mercury outboard. Salt water has eaten the two bottom motor mounts up that hold the drive shaft housing to the swivel bracket. In order to replace the bottom motor mounts it looks like I have to take the two bottom nuts off at the bottom of the swivel bracket AND the two top nuts off at the top of the 14108 posts · Joined 2011. #1 · Nov 27, 2019. I noticed a liquid leaking on left side of engine directly below the motor mount, and I thought it was engine coolant at first glance due to color. But after looking for but not finding any coolant leaking from above, I’m now thinking it’s that motor mount that is leaking and about to go bad If you can poke your finger into the mount its gone. Mine had a small tear on the top and was ripped on the bottom as well. I noticed the thick oil on the side while checking my oil. So I've been paying super close attention to my ride, and I've been noticing an ever so slight increasing amount of shift shock. Remove the bolts and nuts from the passenger side mount, leave the bolts and nuts on the driver’s side motor mount. Raise the passenger side of the engine. There are horizontal pads cast into the upper part of the front and rear of the block. Looking directly up from underneath, rear of the driveshaft. If you are on the book of faces there is a pdf group to look up stuff. I went to my local dealer and ordered my manual. Just don’t expect it for a few weeks. 2019 RGU Wicked Red/Barracuda Silver. FM 128”,Level A heads, Woods 408 bumpstick, HPI 62mm intake/TB, V&H A/C, 6.9 injectors and all the upgrade BS. Stage 1: Vibrations. The most noticeable symptom of a motor mount that is going bad is vibration. That is, more vibration than you would typically feel when you are driving your Silverado. You’ll know when it’s happening. It may not necessarily feel like the vehicle is going to rattle apart, but it’s very noticeable. Identify Failed Engine Mount. Using a flashlight identify the engine mount to be replaced. In the image below we show a torque style of engine mount which have a high failure rate due to excessive engine movement under load. You can see the right side bushing is worn allowing the engine to have excessive lateral movement. 3. Remove the Engine Mount First step is the jack up the oil pan by about an inch. I used a piece of wood between the jack and the oil pan. I applied power lube on all bolts for this job. The upper bracket I removed using a 17mm socket. The 14mm bolts holding the mount I also took out. You can see the old and new mounts. Putting the new mount in had an odd issue. Observe the point where the engine bracket attaches to the mount. One engine at a time, start from neutral, put the engine in gear and then accelerate hard, up to about 1/2 throttle for several seconds. Stop, then repeat this process in reverse, all the while watching the mounts for movement. Repeat several times. If the engine and mount are An engine mount is exactly what it sounds like: it holds the engine of a vehicle or piece of equipment in place. The engine and transmission of a vehicle are attached to one another. In many cases the engine mounts need to do more than just hold the engine to the chassis, they also need to absorb the energy (vibration) produced from the engine GzJrPx.