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| | | Joined: Dec 2003 Posts: 2,733 Shop Shark | | Shop Shark Joined: Dec 2003 Posts: 2,733 | Good news..it has the threaded cap. That means it's rebuildable w/o machining the cap off. Here's what to do:
1. raise the body and securely brace it with some heavy timbers of say 6x6 size. Lower the body onto the timbers and when your absolutely sure the weight of the body is resting against them and there is no pressure against the cylinder you may proceed.
2. Remove the cylinder rod end from the hoist mechanism. This may be bolted or pinned but however it is take it loose making sure the cylinder is supported below. You may want to completely remove the cylinder as many are uncomfortable working under the raised body. I've done it both ways so I understand the reluctance of many to work there.
3. When you have access to the rod seal/cyinder cap remove it and take it to the clean part of your workbench. Remove the seal w/o damaging it or tearing it up.It will likely have a small stamped number on it that can be used to cross-reference it to some available brand.
4. If you cannot find it locally then almost any seal can be found and identified by dimensions alone. This is probably available on the internet as nearly anything else is. Just measure the ID, OD and depth.
5. When you have the new seal use a reverse procedure to re-assemble the cylinder and re-connect to the hoist and the hoist to the body. Make sure the cylinder rod is clean and free of debris. Lightly oil it before replacing the seal over it. Same with the cylinder head where the seal goes but that goes w/o saying. So why did I say it? Because dirt, contaminates and scratches will ruin the new seal as it has the old one.
6. It would be a good idea to drain and replace the hydraulic fluid in the system while it is down. Dirty oil, water and air in a hydraulic system will kill it quicker than you can say Jack Robinson. Cycle the hoist several times with the body connect to make sure all the air is bled out. Likely there is a small bleeder on top of the cylinder at the rod end much like a wheel cylinder bleeder.
7. Be careful and exercise good judgment and check yourself twice.
8.Your now done. Go enjoy your new truck. EZ as that.
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