moltzvt
David Moulton
I wanted to pass on this info as I was not able to find a lot of detail in the places I looked. The problem of a leaking injection pump must be common on Morgans with the 4108 after what I found. Most suggested replacing the entire pump, I think in the short term I saved some $. The leak was obviously from the top of the pump in what is described as the anti-stall device. There are two 16 point 1/4" socket head bolts with safety wire running through them. A fuel injection pump seal kit item # 7135-14 from Trans Atlantic diesel cost me 48.00 plus shipping. The coolant tank the manifold has to come off, drain the coolant first on the port side rear there is a valve and drain hose on my Perkins. The manifold comes off fairly easy, be advised this is a good time to change the thermostat if needed as its located under the coolant tank. Remove the linkage for the throttle setting and the fuel shut off lever, both are contained in this anti-stall housing. Remove the two bolts previously mentioned, try not to change the setting on the topmost screw that should be secure with the locking nut. Now the housing should lift straight off, might require a little jiggling to remove the throttle rod from the injector pump. Keep the area clean or clean prior to removing. Suggest fitting a section of rag into the opening to keep debris out after removal. The two long bolts holding the housing to the pump are also the retainers for both the throttle shaft the fuel shut off shaft. Once removed the shafts can be pulled from the housing. Now clean and replace the o-rings on the shafts. You will have to go through the kit and find the matching o-rings so try and keep them intact when removing for sizing. Now remove the top adjusting bolt assembly, here is where I found the most weathered o-ring, clean and replace the o-ring, reassemble. I used some light oil when reinstalling the shafts to aid getting the new o-rings into the housing. Be advised, there are slots on the shafts where the bolts fit in the housing, no o-rings get installed on these slots. There is a new gasket for this housing, ensure the surfaces are clean and install with the new gaskets. There are new seals for both assembly bolts, don't over tighten. I did not have any specs on the torque value but it was obvious these seals would be crushed if assembled too tight. I snugged up until I could no longer move the housing to pump. There is safety wire in the seal kit to secure these bolts so vibration will not back them out.
I will attach photos, new to getting this right so bear with me. I had total success, no longer dripping and nasty fuel odor is gone.
I will attach photos, new to getting this right so bear with me. I had total success, no longer dripping and nasty fuel odor is gone.
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