Author Topic: mk 5 oil pump  (Read 1690 times)

0 Members and 1 Guest are viewing this topic.

Offline jyprfc

  • Full Member
  • **
  • Join Date: Nov 2013
  • Posts: 29
  • Location: ky138eg scotland
mk 5 oil pump
« on: 03 Mar 2014 at 18:09 »
hi wonder if anyone can help how do you know if oil pump is working   Jim

Offline eddie

  • Master Member
  • ****
  • Join Date: Mar 2006
  • Posts: 1459
  • Location: Hampshire, UK
Re: mk 5 oil pump
« Reply #1 on: 03 Mar 2014 at 21:49 »
Jim,
       Just below the timing cover you will find a cheese head screw - this blanks off the vertical oilway to the crankshaft. With the screw removed, push a drill into the oilway to make sure it isn't blocked with sludge. You can then screw in a fitting connected to a pressure gauge. If a gauge isn't available, put a drip tray under and leave the screw slightly loose. If the oil drips faster with the engine running, then the pump is working. If you have a gauge, don't be surprised if the pressure doesn't rise more than about 5 psi. The volume of oil is more important than the pressure. This low pressure is the reason for Mr Douglas recommending 3 thou clearance on the front main bearing bush - much less clearance and the low pressure oil can't push it's way out and lubricate the bush, with the result that it will probably nip up on the shaft!

   Regards,
                  Eddie.

Offline jyprfc

  • Full Member
  • **
  • Join Date: Nov 2013
  • Posts: 29
  • Location: ky138eg scotland
Re: mk 5 oil pump
« Reply #2 on: 04 Mar 2014 at 00:35 »
hi eddie thanks very much for info jim

 

motorcycle