I am hoping someone can show me how the oil feed for a 12ht vacuum pump works...
I have had my 12ht rebuilt, but the vacuum pump isn’t working as it should (heavy clutch pedal, brake light on and no brakes at low revs etc). I bought a new alternator/vac pump and new genuine inlet / return hoses ($$$) but there was no difference when fitted..
The inlet / return holes on the block are at the same height, and no oil comes out of either when the hoses are off (engine off). How does it pump oil if they are both above oil height??
Brakes / clutch etc were working perfectly prior the the rebuild...
I have had my 12ht rebuilt, but the vacuum pump isn’t working as it should (heavy clutch pedal, brake light on and no brakes at low revs etc). I bought a new alternator/vac pump and new genuine inlet / return hoses ($$$) but there was no difference when fitted..
The inlet / return holes on the block are at the same height, and no oil comes out of either when the hoses are off (engine off). How does it pump oil if they are both above oil height??
Brakes / clutch etc were working perfectly prior the the rebuild...