For sale a bulkhead dog guard for a defender in good condition, Genuine Landrover part RTC 8095 All fittings present £25.00 collection only from Newport South Wales, or can meet at junction 23 M4 (Magor Services)
The number you have FRC5105 is a ABS swivel, I think you need FRC7065 Non ABS swivel.ther are only two plugs for oil, one drain and one filler, as you said fill it till it overflows.
I did the seals on mine last week, The arm came off easily with help of a Pitman arm puller off Ebay £9.95. If you get the puller off Ebay make sure you buy the one with 33mm throat. get Corteco seals £5.95.
I had the same problem, turned out to be bolt warn on the radius arm, there was a ridge warn on the plain surface of the left hand front bolt, When I turned out of my driveway I had this clonk, as I said it was the front bolt. Hope this helps.