torch
Well-known member
Equipment
B7100HSD, B2789, B2550, B4672, 48" cultivator, homemade FEL and Cab
The last few cold starts have required lots of glow time, even with the block heater plugged in. So I thought I would do some checks. Rear cylinder: over 9v to the plug. Centre cylinder, under 8v to the plug. Front cylinder slightly less again. Sounds like some corrosion on the connections, so I thought I would remove the nuts and clean them.
The nuts are round, with a light knurl and a straight slot offset from the threaded hole. A straight screwdriver loosened the rear one. I cleaned it up and now voltage to the middle one is about 1 volt, so I guess that's where the problem is an I made it worse.
Darned if I can get that middle one loose though. I've used enough force to start distorting the slot. There's not enough room between the plug and the manifold to grab the knurl with pliers or vice-grips. I tried some small needle-nose vice-grips but they just started to slip. Is there a special tool for this job?
While I'm on the subject, what size socket do I need in the event that the plug has to come out?
The nuts are round, with a light knurl and a straight slot offset from the threaded hole. A straight screwdriver loosened the rear one. I cleaned it up and now voltage to the middle one is about 1 volt, so I guess that's where the problem is an I made it worse.
Darned if I can get that middle one loose though. I've used enough force to start distorting the slot. There's not enough room between the plug and the manifold to grab the knurl with pliers or vice-grips. I tried some small needle-nose vice-grips but they just started to slip. Is there a special tool for this job?
While I'm on the subject, what size socket do I need in the event that the plug has to come out?