Diff drain plugs

[jimmy86]

Just a quick question about drain plugs in the diff housing... The two Rover front axles I have both have 2 drain plugs (as well as the filler plug on the diff casting). One at the lowest point in the diff housing and one on the front face which I assume is at the correct fill level. But the 2 rear axles I have are different (both 2A). One only has a single drain plug at base, and one has this plus a second hole (roughly 1/4" dia and threaded but not plugged) drilled in the diff housing like the two front axles. Hope that all makes sense

Question is what is the drilled hole for? Is it an amateur job with a powerdrill? And why do some diff housings have a second plug while others don't?

If anyone can shed some light that'd be great,

Cheers, Jimmy

[HangOver]

maybe used to be a hole for an airline for lockers? check your diff you never know you luck !

[JDNSW]

Series 2/2a diffs have a level plug on the pinion carrier on the rear diff, and a level plug on the front of the front axle housing. All axle housings have a drain plug on the bottom. Salisbury axles (rear option on late 2a 109, but often fitted to earlier 109s off S3s) have a level plug on the back cover plate.

Some, but not all, front diffs have the level plug on the pinion carrier. Where one of these (or a Rangerover one without the level plug) is fitted to the rear of a 2a, it is necessary to make some sort of level plug in the axle housing, and this may well be smaller than the original one in the front axle.

All Series 2/2a axles have a threaded hole in the top of the long section of the axle housing for a breather.

Hope this helps,

John

[jimmy86]

maybe used to be a hole for an airline for lockers? check your diff you never know you luck !

haha True you never know Don't think so though... but I'll let you know!